Accessory for electronic equipment, shell, communication equipment and communication system

Abstract

The invention discloses an accessory for electronic equipment, a shell, communication equipment and a communication system, and aims to solve the problem of poor communication quality caused by low gain and small beam angle of an antenna radiator. According to the accessory, an accessory radiator and an antenna radiator of the electronic equipment are arranged at intervals, signals are coupled from the antenna radiator, namely, the antenna radiator couples the signals to the accessory radiator, the accessory radiator is in coupling connection with a radio frequency connector, and the radio frequency connector is connected with an external antenna; through the accessory, the electronic equipment can transmit signals outwards or receive signals through the external antenna, and the external antenna has a relatively large gain and a relatively large beam angle, so that the communication gain and the beam angle of the electronic equipment are increased, and the communication quality is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and specifically to an accessory, a housing, a communication device, and a communication system for an electronic device. Background Art

[0002] Mobile phones and other electronic devices are generally equipped with antenna radiators, which can be used for wireless communication with satellites or communication base stations. However, the communication gain and beam angle of the antenna radiator are low, resulting in poor communication quality. Summary of the invention

[0003] The embodiments of the present application provide an accessory, a housing, a communication device and a communication system for an electronic device, which can increase the gain and beam angle and improve the communication quality.

[0004] In a first aspect, an embodiment of the present application provides an accessory for an electronic device, the accessory comprising: an accessory radiator and a radio frequency connector, the accessory radiator being configured to be spaced apart from an antenna radiator of the electronic device and to couple signals from the antenna radiator; the radio frequency connector being coupled to the accessory radiator, the radio frequency connector being configured to be connected to an external antenna.

[0005] Through the above-mentioned settings, the interval between the accessory radiator and the antenna radiator of the electronic device is set, and the signal is coupled from the antenna radiator, that is, the antenna radiator couples the signal to the accessory radiator, the RF connector is coupled and connected to the accessory radiator, and the RF connector is connected to the external antenna; the accessory allows the electronic device to transmit or receive signals externally through the external antenna, and the external antenna has a larger gain and beam angle, thereby increasing the gain and angle of the electronic device and improving the communication quality.

[0006] In some embodiments that may include the above embodiments, the length of the accessory radiator is about 1 / 2±1 / 8 of the medium working wavelength. Wherein, the medium working wavelength corresponds to the working frequency of the antenna radiator of the electronic device, for example, the center frequency of the working frequency band. Exemplarily, when the working frequency band is 1.5GHz-2.5GHz, the length of the accessory radiator is 30mm-75mm. In this way, the working frequency band of the accessory radiator covers the commonly used cellular communication and satellite communication frequency bands, and the working frequency band covers a wide range.

[0007] In some embodiments that may include the above embodiments, the antenna radiator is used to generate a first resonance, and the first resonance covers a satellite transmission frequency band or a satellite reception frequency band. In one embodiment, the satellite transmission frequency band includes a 2 GHz frequency or, the satellite reception frequency band includes a 2.2 GHz frequency. In one embodiment, the transmission frequency (TX) includes 2 GHz, and the reception frequency band (RX) includes 2.2 GHz, and the operating frequency band may cover the Tiantong satellite frequency band.

[0008] It is understandable that the length of the accessory radiator can be 35 mm to 55 mm. Through the above configuration, the accessory radiator can couple the signal of the working frequency band of the antenna radiator, such as the Tiantong satellite frequency band.

[0009] In some embodiments that may include the above embodiments, the accessory further includes a dielectric plate, the accessory radiator is stacked on the dielectric plate, and the dielectric plate is configured to be disposed between the accessory radiator and the antenna radiator. The dielectric plate can carry the accessory radiator to facilitate the manufacture and installation of the accessory radiator.

[0010] In some embodiments that may include the above embodiments, in an implementation in which the electronic device includes a mobile phone and the outer shell is a mobile phone case, an installation groove may be provided on the inner side of the shell side plate, and the medium plate may be provided in the installation groove so that the inner wall of the accommodating groove is roughly flat.

[0011] In some embodiments that may include the above embodiments, the length of the accessory radiator is greater than the length of the antenna radiator. Since the space between the accessory radiator and the antenna radiator has a certain dielectric constant, such as the structure, housing, dielectric plate, etc. inside the electronic device, all have a certain dielectric constant, by making the length of the accessory radiator greater than the length of the antenna radiator, the electrical length of the accessory radiator can be made substantially equal to the electrical length of the antenna radiator, thereby avoiding the influence of the above dielectric constant.

[0012] In some embodiments that may include the above embodiments, when the accessory is in use, the accessory radiator and the antenna radiator both extend along the first direction, the accessory radiator includes a first end and a second end, the antenna radiator includes a third end and a fourth end, the first end is close to the third end relative to the second end; the first end and the third end are arranged spaced apart along the first direction. Through the above arrangement, the electric field strength point of the antenna radiator and the electric field strength point of the accessory radiator are staggered along the first direction, and the third end is close to the center of the accessory radiator, so that a magneto-electric coupling is formed between the third end and the accessory radiator corresponding thereto, thereby weakening the energy storage field between the antenna radiator and the accessory radiator, making it easier for the signal to be coupled into the accessory radiator, thereby reducing the signal loss between the antenna radiator and the accessory radiator.

[0013] In some embodiments that may include the above embodiments, the minimum distance between the first end and the third end along the first direction is greater than 3mm. The minimum distance between the first end and the third end along the first direction is greater than 3mm (such as 4mm, 5mm, 10mm, 15mm, 20mm, etc.). When the minimum distance between the first end and the third end along the first direction is 3mm, the isolation between the antenna radiator and the accessory radiator is close to -5.6dB (loss is 5.6dB). When the loss is less than or equal to 5dB, the effect of the loss on the communication quality is almost negligible. At this time, the signal coupling between the antenna radiator and the accessory radiator is good. Therefore, by making the minimum distance between the first end and the third end along the first direction greater than 3mm, it can be ensured that the signal loss between the antenna radiator and the accessory radiator is less than 5dB, further reducing the signal loss and improving the communication quality.

[0014] In some embodiments that may include the above embodiments, the accessory radiator includes a first accessory radiator and a second accessory radiator spaced apart along a first direction, and an end of the first accessory radiator close to the second accessory radiator and an end of the second accessory radiator close to the first accessory radiator are coupled to the RF connector. This arrangement facilitates the connection between the accessory radiator and the RF connector.

[0015] In some embodiments that may include the above embodiments, the second end and the fourth end are arranged to be spaced apart along the first direction. In this way, another electric field strength point (fourth end) of the antenna radiator and another electric field strength point (second end) of the accessory radiator are staggered along the first direction, which can further weaken the energy storage field between the antenna radiator and the accessory radiator, and further reduce the signal loss between the antenna radiator and the accessory radiator.

[0016] In some embodiments that may include the above embodiments, in a preset plane parallel to the first direction, the projection of the second end on the preset plane falls on the projection of the antenna radiator on the preset plane. Through the above arrangement, another electric field strength point (second end) of the accessory radiator and another electric field strength point (fourth end) of the antenna radiator are staggered along the first direction, and the second end is close to the center (magnetic field strength point) of the antenna radiator, so that magneto-electric coupling is formed between the second end and the corresponding antenna radiator; that is, magneto-electric coupling is formed between the third end and the corresponding accessory radiator, magneto-electric coupling is formed between the second end and the corresponding antenna radiator, and magnetic coupling is formed at the position between the two magneto-electric couplings, which can further weaken the energy storage field between the antenna radiator and the accessory radiator, making it easier for the signal to be coupled into the accessory radiator, and further reducing the signal loss between the antenna radiator and the accessory radiator.

[0017] In some embodiments that may include the above embodiments, in a preset plane parallel to the first direction, a projection of the first end is located outside a projection of the antenna radiator.

[0018] In some embodiments, which may include the above embodiments, the first end and the second end are both open ends.

[0019] In some embodiments that may include the above embodiments, a grounding point is provided on the accessory radiator, and the grounding point is located between the first end and the second end. Exemplarily, a grounding metal layer may be provided on the housing, and the grounding point of the accessory radiator may be connected to the grounding metal layer through a wire to achieve grounding of the grounding point of the accessory radiator. The grounding metal layer may be provided on a side plate or a back plate of the housing.

[0020] In some embodiments that may include the above embodiments, the accessory radiator includes a first accessory radiator and a second accessory radiator spaced apart along a first direction, an end of the first accessory radiator away from the second accessory radiator is a first end, and an end of the second accessory radiator away from the first accessory radiator is a second end; the first end and the second end are both ground ends.

[0021] In some embodiments that may include the above embodiments, the antenna radiator includes a first antenna radiator and a second antenna radiator spaced apart along the first direction, an end of the first antenna radiator away from the second antenna radiator is a third end, and an end of the second antenna radiator away from the first antenna radiator is a fourth end; the third end and the fourth end are both grounded ends; a first gap is formed between the first antenna radiator and the second antenna radiator, a second gap is formed between the first accessory radiator and the first accessory radiator, and the first gap and the second gap are spaced apart along the first direction. Through the above arrangement, the electric field strength point of the antenna radiator and the electric field strength of the accessory radiator can be electrically staggered, thereby reducing the signal loss between the antenna radiator and the accessory radiator.

[0022] In some embodiments that may include the above embodiments, along the first direction, the minimum distance between the first slit and the third end is smaller than the minimum distance between the second slit and the third end. So that the first slit and the second slit are arranged spaced apart along the first direction, and the first slit is closer to the third end. In the implementation mode where the projection of the first end in the preset plane is outside the antenna radiator, the minimum distance between the first slit and the third end is smaller than the minimum distance between the second slit and the third end, so that the lengths of the first accessory radiator and the second accessory radiator are substantially equal, so as to prevent the lengths of the first accessory radiator and the second accessory radiator from being too large or too small.

[0023] In some embodiments that may include the above embodiments, in a preset plane parallel to the first direction, the projection of the first end is located within the projection of the antenna radiator.

[0024] In a second aspect, an embodiment of the present application further provides a housing, comprising a shell and the accessory as described above, wherein the accessory is disposed on the shell, and the shell is configured to accommodate an electronic device, wherein a radiator of the accessory is disposed inside the shell.

[0025] The housing provided in the embodiment of the present application includes the accessories in any of the above embodiments, so the two can solve the same technical problems and achieve the same technical effects.

[0026] In some embodiments that may include the above embodiments, the housing includes a back plate and a side plate surrounding the back plate, the side plate is vertically arranged with the back plate, and the side plate and the back plate form a receiving cavity for receiving the electronic device; the back plate is rectangular, the side plate includes a first side plate and a second side plate, the first side plate and the second side plate correspond to the sides adjacent to the back plate, and the accessory radiator is arranged on the first side plate. With such an arrangement, when the mobile phone is installed in the housing, the accessory radiator can be close to the antenna radiator and arranged at a distance to reduce the difficulty of installation.

[0027] In some embodiments that may include the above-mentioned embodiments, the accessory radiator is offset relative to the center of the first side plate along the length direction of the first side plate, that is, the accessory radiator is biased. It can be understood that the center offset of the accessory radiator relative to the first side plate can be different distances from the first end and the second end to the center. Through the above-mentioned arrangement, when the electronic device is placed in the housing, the first end and the third end can be arranged to be spaced apart along the first direction, that is, the electric field strength point of the antenna radiator and the electric field strength point of the accessory radiator are staggered along the first direction, and the third end is close to the center of the accessory radiator, so that a magneto-electric coupling is formed between the third end and the accessory radiator corresponding thereto, thereby reducing the signal loss between the antenna radiator and the accessory radiator.

[0028] In some embodiments that may include the above embodiments, the first side plate may be a side plate located at the top of the housing, so that when the electronic device is placed in the housing, the first side plate is close to the frame provided with the antenna radiator, so that the accessory radiator and the antenna radiator are close to each other. When in use, the antenna radiator faces the zenith direction to prevent external objects such as the user's head from blocking the signal.

[0029] In some embodiments that may include the above embodiments, the distance between the accessory radiator and the inner wall of the housing is 1 mm-3 mm. In this way, the distance between the antenna radiator and the accessory radiator can be small while ensuring that the signal loss between the antenna radiator and the accessory radiator is low, which is convenient for realizing a light and thin design of the accessory.

[0030] In a third aspect, an embodiment of the present application further provides a communication device, comprising an electronic device and a housing as described above, wherein the housing is used to accommodate the electronic device.

[0031] The communication device provided in the embodiment of the present application includes the accessories in any of the above embodiments, so the two can solve the same technical problems and achieve the same technical effects.

[0032] In a fourth aspect, an embodiment of the present application further provides a communication device, including an electronic device and the accessory as described above, wherein the accessory is arranged close to an antenna radiator of the electronic device.

[0033] The communication device provided in the embodiment of the present application includes the accessories in any of the above embodiments, so the two can solve the same technical problems and achieve the same technical effects.

[0034] In some embodiments that may include the above embodiments, the electronic device includes a frame, a first insulating break and a second insulating break are provided on the frame, the antenna radiator includes at least a portion of the conductive frame between the first insulating break and the second insulating break; the projection of the accessory radiator on the frame covers the first insulating break, and the projection of the accessory radiator on the frame is spaced from the second insulating break. Since other communication antennas are generally provided on the frame, the projection of the accessory radiator on the frame is spaced from the second insulating break to prevent the accessory radiator from affecting the operation of other communication antennas.

[0035] In some embodiments that may include the above embodiments, the antenna radiator includes a main radiator and a parasitic radiator arranged along a first direction, the main radiator includes a third end and a fourth end, the parasitic radiator is located on a side of the third end away from the fourth end, and the main radiator is used to couple a signal to the parasitic radiator; the accessory radiator includes a first end and a second end, and in a preset plane parallel to the first direction, the projection of the first end is located within the projection of the parasitic radiator. Through the above arrangement, the first end (electric field strength point) can be staggered with the eighth end (electric field strength point) and the third end (electric field strength point), and the eighth end (electric field strength point) and the third end (electric field strength point) are both close to the center (magnetic field strength point) of the accessory radiator, so that the first end (electric field strength point) forms a magneto-electric coupling with the eighth end (electric field strength point) and the third end (electric field strength point), and the magneto-electric coupling area can be increased to further weaken the energy storage field between the antenna radiator and the parasitic radiator, and further reduce the signal loss between the antenna radiator and the parasitic radiator.

[0036] In some embodiments that may include the above embodiments, the parasitic radiator is disposed spaced apart from the main radiator along the first direction.

[0037] In some embodiments that may include the above embodiments, the distance between the accessory radiator and the antenna radiator is 1 mm-3 mm. In this way, the distance between the antenna radiator and the accessory radiator can be small while ensuring that the signal loss between the antenna radiator and the accessory radiator is low, which facilitates the realization of a light and thin design of the accessory.

[0038] In a fifth aspect, an embodiment of the present application also provides a communication system, comprising a communication device as described above and an external antenna, wherein the external antenna is connected to the RF connector, and the external antenna is used to generate a second resonance, wherein the second resonance is used to cover the above-mentioned satellite transmission frequency band or the satellite reception frequency band, for example, the above-mentioned satellite transmission frequency band includes a 2 GHz frequency, and the above-mentioned satellite reception frequency band includes a 2.2 GHz frequency.

[0039] The communication system provided in the embodiment of the present application includes the accessories in any of the above embodiments, so the two can solve the same technical problems and achieve the same technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0041] Figure 2 An exploded diagram between an electronic device and a housing in a communication device provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of the structure of an electronic device in a communication device provided in an embodiment of the present application;

[0043] Figure 4 Schematic diagram of the beam angle of the electronic device;

[0044] Figure 5 Schematic diagram of the beam angle of the external antenna;

[0045] Figure 6 A schematic diagram of the structure of the communication system provided in an embodiment of the present application applied to a vehicle-mounted scenario;

[0046] Figure 7 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 1 ;

[0047] Figure 8 Schematic diagram of the position between the accessory radiator and the electronic device in the communication device provided in the embodiment of the present application Figure 1 ;

[0048] Fig. 9 for Figure 8 Electric and magnetic field plots for the structure shown;

[0049] Fig.10 for Figure 8 S-parameter graph of the structure shown;

[0050] Fig.11a Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 2 ;

[0051] Fig.11b Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 3 ;

[0052] Fig.12 for Fig.11b Electric and magnetic field plots for the structure shown;

[0053] Fig.13 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 4 ;

[0054] Fig.14 A schematic diagram of a structure in which an accessory radiator in a communication device provided in an embodiment of the present application includes a first accessory radiator and a second accessory radiator;

[0055] Fig.15a Schematic diagram of the position between the accessory radiator and the electronic device in the communication device provided in the embodiment of the present application Figure 2 ;

[0056] Fig.15b for Fig.15a S-parameter graph of the structure shown;

[0057] Fig.15c for Fig.15a Antenna matching diagram of the structure shown;

[0058] Fig.16a Schematic diagram of the position between the accessory radiator and the electronic device in the communication device provided in the embodiment of the present application Figure 3 ;

[0059] Fig.16b for Fig.16a S-parameter graph of the structure shown;

[0060] Fig.16c for Fig.16a Antenna matching diagram of the structure shown;

[0061] Fig.17a Schematic diagram of the position between the accessory radiator and the electronic device in the communication device provided in the embodiment of the present application Figure 4 ;

[0062] Fig.17b for Fig.17a S-parameter graph of the structure shown;

[0063] Fig.17c for Fig.17a Antenna matching diagram of the structure shown;

[0064] Fig.18 An exploded diagram of a communication system in an embodiment of the present application;

[0065] Fig.19 This is a schematic diagram of the structure of the housing in the embodiment of the present application;

[0066] Fig. 20 A top view of the housing in the embodiment of the present application;

[0067] Fig.21 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 5 ;

[0068] Fig. 22 for Fig.21 Electric and magnetic field plots for the structure shown;

[0069] Fig.23 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 6 ;

[0070] Fig.24 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 7 ;

[0071] Fig.25a Schematic diagram of the position between the accessory radiator and the electronic device in the communication device provided in the embodiment of the present application Figure 5 ;

[0072] Fig.25b for Fig.25a S-parameter graph of the structure shown;

[0073] Fig.25c for Fig.25a Antenna matching diagram of the structure shown;

[0074] Fig.26a Schematic diagram of the position between the accessory radiator and the electronic device in the communication device provided in the embodiment of the present application Figure 6 ;

[0075] Figure 26b for Fig.26a S-parameter graph of the structure shown;

[0076] Fig.26c for Fig.26a Antenna matching diagram of the structure shown;

[0077] Fig.27a Schematic diagram of the position between the accessory radiator and the electronic device in the communication device provided in the embodiment of the present application Figure 7 ;

[0078] Figure 27b for Fig.27aS-parameter graph of the structure shown;

[0079] Fig.28 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 8 ;

[0080] Fig.29 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 9 ;

[0081] Fig.30 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 10 ;

[0082] Fig.31 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 10 one;

[0083] Fig.32 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 10 two;

[0084] Fig.33 Schematic diagram of the structure of the accessory radiator and the antenna radiator in the communication device provided in the embodiment of the present application Figure 10 three;

[0085] Fig.34a Schematic diagram of antenna structure corresponding to line common mode;

[0086] Fig.34b for Fig.34a Current and electric field distribution diagram of the antenna structure;

[0087] Fig.34c for Fig.28 Current curve of the radiator in the middle accessory;

[0088] Fig.35a Schematic diagram of antenna structure corresponding to the linear differential mode;

[0089] Fig.35b for Fig.35a Current and electric field distribution diagram of the antenna structure;

[0090] Fig.35c for Fig.11a Current curve of the radiator in the middle accessory;

[0091] Fig.36a Schematic diagram of the antenna structure corresponding to the slot common mode;

[0092] Fig.36b for Fig.36a Current and electric field distribution diagram of the antenna structure;

[0093] Fig.36c for Fig.30 Current curve of the radiator in the middle accessory;

[0094] Fig.37a Schematic diagram of the antenna structure corresponding to the slot differential mode;

[0095] Figure 37b for Fig.37a Current and electric field distribution diagram of the antenna structure;

[0096] Fig.37c for Fig.32 Current curve of the accessory radiator.

[0097] Description of reference numerals:

[0098] 1: communication device; 2: external antenna; 3: coaxial cable; 10: accessory; 20: electronic device; 30: housing; 100: communication system; 110: accessory radiator; 120: RF connector; 130: dielectric board; 111: first accessory radiator; 112: second accessory radiator; 1111: first end; 1112: fifth end; 1121: second end; 1122: sixth end; 113: first gap; 30: housing; 310: shell; 320: accommodating cavity; 311: back plate; 312: side plate; 313: first side plate; 314: sixth end Two side plates; 200: antenna radiator; 201: main radiator; 202: parasitic radiator; 203: seventh end; 204: eighth end; 210: cover plate; 220: display screen; 230: middle frame; 231: frame; 240: printed circuit board; 250: back cover; 2323: first insulating break; 2324: second insulating break; 261: first antenna radiator; 2611: third end; 2612: ninth end; 262: second antenna radiator; 2621: fourth end; 2622: tenth end; 263: second gap; 280: through hole. DETAILED DESCRIPTION

[0099] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0100] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0101] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components placed in the drawings.

[0102] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, an electrical connection, a coupled connection, or a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium. Among them, coupling can be understood as direct coupling and / or indirect coupling, and "coupled connection" can be understood as direct coupling connection and / or indirect coupling connection. Direct coupling can also be called "electrical connection", which is understood as the physical contact and electrical conduction of components; it can also be understood as the form in which different components in the circuit structure are connected through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals; "indirect coupling" can be understood as two conductors being electrically conductive in an airless / non-contact manner. In one embodiment, indirect coupling can also be called capacitive coupling, for example, signal transmission is achieved by forming an equivalent capacitor through coupling between the gap between two conductive parts.

[0103] Relative / opposite arrangement: A and B being arranged oppositely may mean that A and B are arranged face to face (opposite to, or face to face). For example, when two radiators are arranged oppositely, the two radiators are arranged to overlap at least partially in a certain direction. In one embodiment, the two oppositely arranged radiators are arranged adjacent to each other and no other radiators are arranged between them, and no conductive body other than the antenna structure is arranged between them.

[0104] Capacitance: It can be understood as lumped capacitance and / or distributed capacitance. Lumped capacitance refers to capacitive components, such as capacitors; distributed capacitance (or distributed capacitance) refers to the equivalent capacitance formed by two conductive parts separated by a certain gap.

[0105] Inductance: It can be understood as lumped inductance and / or distributed inductance. Lumped inductance refers to inductive components, such as inductors; distributed inductance (or distributed inductance) refers to the equivalent inductance formed by a certain length of conductive parts, such as the equivalent inductance formed by the conductor due to curling or rotation.

[0106] Radiator, or antenna branch: is a device in the antenna used to receive / send electromagnetic wave radiation. In some cases, the narrow sense of "antenna" is to be understood as a radiator, which converts the waveguide energy from the transmitter into radio waves, or converts radio waves into waveguide energy, which is used to radiate and receive radio waves. The modulated high-frequency current energy (or waveguide energy) generated by the transmitter is transmitted to the transmitting radiator via the feeder line, and is converted into a certain polarized electromagnetic wave energy by the radiator and radiated in the desired direction. The receiving radiator converts a certain polarized electromagnetic wave energy from a specific direction in space into modulated high-frequency current energy, which is transmitted to the receiver input via the feeder line.

[0107] The radiator (or antenna branch) may include a conductor with a specific shape and size, such as a linear or sheet shape, etc. The present application does not limit the specific shape. In one embodiment, the linear radiator may be referred to as a linear antenna. In one embodiment, the linear radiator may be implemented by a conductive frame, and may also be referred to as a frame antenna. In one embodiment, the linear radiator may be implemented by a bracket conductor, and may also be referred to as a bracket antenna. In one embodiment, the linear radiator, or the radiator of the linear antenna, has a wire diameter (e.g., including thickness and width) much smaller than the wavelength (e.g., the dielectric wavelength) (e.g., less than 1 / 16 of the wavelength), and the length may be comparable to the wavelength (e.g., the dielectric wavelength) (e.g., the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). The main forms of linear antennas include dipole antennas, half-wave dipole antennas, monopole antennas, loop antennas, and inverted F antennas (also known as IFA, Inverted F Antenna). For example, for a dipole antenna, each dipole antenna generally includes two radiating branches, and each branch is fed by a feeding unit from the feeding end of the radiating branch. For example, an inverted-F antenna (IFA) can be regarded as a monopole antenna with a ground path added. The IFA antenna has a feeding point and a grounding point, and is called an inverted F antenna because its side view is an inverted F shape. In one embodiment, the sheet radiator may include a microstrip antenna, or a patch antenna, such as a planar inverted F antenna (also known as PIFA, Planar Inverted F Antenna). In one embodiment, the sheet radiator may be implemented by a planar conductor (such as a conductive sheet or a conductive coating, etc.). In one embodiment, the sheet radiator may include a conductive sheet, such as a copper sheet, etc. In one embodiment, the sheet radiator may include a conductive coating, such as a silver paste, etc. The shape of the sheet radiator includes a circle, a rectangle, a ring, etc., and the present application does not limit the specific shape. The structure of the microstrip antenna is generally composed of a dielectric substrate, a radiator and a floor, wherein the dielectric substrate is arranged between the radiator and the floor.

[0108] The radiator (or antenna branch) may also include a slot or a slit formed on the conductor, for example, a closed or semi-closed slot or slit formed on the grounded conductor surface. In one embodiment, a slotted or slit radiator may be referred to as a slot antenna or a slot antenna. In one embodiment, the radial dimension (for example, including the width) of the slot or slit of the slot antenna / slot antenna is much smaller than the wavelength (for example, the dielectric wavelength) (for example, less than 1 / 16 of the wavelength), and the length dimension may be comparable to the wavelength (for example, the dielectric wavelength) (for example, the length is about 1 / 8 of the wavelength, or 1 / 8 to 1 / 4, or 1 / 4 to 1 / 2, or longer). In one embodiment, a radiator with a closed slot or slit may be referred to as a closed slot antenna. In one embodiment, a radiator with a semi-closed slot or slit (for example, an opening is added to a closed slot or slit) may be referred to as an open slot antenna. In some embodiments, the slot shape is a long strip. In some embodiments, the length of the slot is about half a wavelength (for example, the dielectric wavelength). In some embodiments, the length of the slot is about an integer multiple of the wavelength (for example, one times the dielectric wavelength). In some embodiments, the slot can be fed by a transmission line connected across one or both sides thereof, thereby exciting a radio frequency electromagnetic field on the slot and radiating electromagnetic waves into space. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a conductive frame with both ends grounded, which can also be called a frame antenna; in this embodiment, it can be regarded as that the slot antenna or slot antenna includes a linear radiator, which is spaced apart from the floor and grounded at both ends of the radiator, thereby forming a closed or semi-closed slot or slot. In one embodiment, the radiator of the slot antenna or slot antenna can be realized by a bracket conductor with both ends grounded, which can also be called a bracket antenna.

[0109] In some embodiments, the electronic device may further include a test socket (or referred to as a radio frequency socket or a radio frequency test socket). The test socket may be used to insert a coaxial cable to test the characteristics of the radio frequency front-end circuit or the radiator of the antenna through the cable. The radio frequency front-end circuit may be considered as a circuit portion coupled between the test socket and the transceiver.

[0110] In some embodiments, the RF front-end circuit may be integrated into a RF front-end chip in the electronic device, or the RF front-end circuit and the transceiver may be integrated into a RF chip in the electronic device.

[0111] It should be understood that any two of the first / second / …Nth feeding circuits in the present application can share the same transceiver, for example, transmitting signals through a RF channel in a transceiver (for example, a port (pin) of a RF chip); they can also share a RF front-end circuit, for example, processing signals through a switch or amplifier in a RF front-end.

[0112] It should also be understood that two feeding circuits in the first / second / ...Nth feeding circuits in the present application usually correspond to two radio frequency test sockets in the electronic device.

[0113] The matching circuit is a circuit related to adjusting the radiation characteristics of the antenna. In one embodiment, the matching circuit is coupled between the feed circuit and the corresponding radiator. Usually, the matching circuit is coupled between the test socket and the radiator. In one embodiment, the matching circuit has the function of impedance matching and / or frequency tuning. Usually, it is considered to be a part of the antenna.

[0114] The tuning circuit is a circuit related to adjusting the resonant frequency of the antenna. In one embodiment, the tuning circuit is coupled between the radiator and the floor. In one embodiment, the tuning circuit is coupled between the feeding circuit and the radiator. In one embodiment, the tuning circuit has the function of impedance matching and / or frequency tuning. Generally, it is considered to be a part of the antenna.

[0115] In one embodiment, the matching circuit / tuning circuit may include a switch and / or an electronic component / device, and the switch may be an electronic component / device for switching the coupling connection of the radiator. The switch in the matching circuit / tuning circuit may also be referred to as an antenna switch. In one embodiment, the matching circuit / tuning circuit may include a filtering circuit.

[0116] The grounding structure / feeding structure may include a connector, such as a metal spring, and the radiator is coupled to the floor through the grounding structure / feeding structure is coupled to the feeding circuit. In some embodiments, the feeding structure may include a transmission line / feeding line, and the grounding structure may include a grounding line.

[0117] The feed line, also called the transmission line, refers to the connection line between the antenna's transceiver and the radiator. The transmission line can directly transmit current waves or electromagnetic waves depending on the frequency and form. The connection point on the radiator where the transmission line is connected is usually called the feeding point. Transmission lines include wire transmission lines, coaxial transmission lines, waveguides, or microstrip lines. The transmission line can include a bracket antenna body or a glass antenna body depending on the implementation form. The transmission line can be implemented by LCP (Liquid Crystal Polymer), FPC (Flexible Printed Circuit), or PCB (Printed Circuit Board) depending on the carrier.

[0118] Ground / floor: can refer to at least a part of any grounding layer, grounding plate, or grounding metal layer in an electronic device (such as a mobile phone), or at least a part of any combination of any of the above grounding layers, grounding plates, or grounding components, etc., and "ground / floor" can be used for grounding components in electronic devices. In one embodiment, "ground / floor" can include any one or more of the following: the grounding layer of the circuit board of the electronic device, the grounding plate formed by the middle frame of the electronic device, the grounding metal layer formed by the metal film under the screen, the conductive grounding layer of the battery, and the conductive parts or metal parts electrically connected to the above grounding layer / grounding plate / metal layer. In one embodiment, the circuit board can be a printed circuit board (PCB), such as an 8-layer, 10-layer or 12-14-layer board with 8, 10, 12, 13 or 14 layers of conductive materials, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board includes a dielectric substrate, a grounding layer and a wiring layer, and the wiring layer and the grounding layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. can be mounted on or connected to a circuit board; or electrically connected to a wiring layer and / or a ground layer in the circuit board. For example, a radio frequency source is disposed on the wiring layer.

[0119] Any of the above-mentioned grounding layers, grounding plates, or grounding metal layers are made of conductive materials. In one embodiment, the conductive material can be any of the following materials: copper, aluminum, stainless steel, brass and their alloys, copper foil on an insulating substrate, aluminum foil on an insulating substrate, gold foil on an insulating substrate, silver-plated copper, silver-plated copper foil on an insulating substrate, silver foil and tin-plated copper on an insulating substrate, cloth impregnated with graphite powder, graphite-coated substrates, copper-plated substrates, brass-plated substrates, and aluminum-plated substrates. It will be appreciated by those skilled in the art that the grounding layer / grounding plate / grounding metal layer can also be made of other conductive materials.

[0120] Grounding: refers to coupling with the above-mentioned ground / floor through a grounding structure and / or a grounding circuit. In one embodiment, grounding can be achieved through physical grounding, such as physical grounding (or physical ground) at a specific position on the frame through some structural members of the middle frame. In one embodiment, grounding can be achieved through device grounding, such as grounding through devices such as capacitors / inductors / resistors connected in series or in parallel (or device ground).

[0121] Resonant frequency: The resonant frequency is also called the resonance frequency. The resonant frequency can have a frequency range, that is, the frequency range in which resonance occurs. The resonant frequency can be a frequency range in which the return loss characteristic is less than -6dB. The strongest point of resonance can be called the resonance point, and the frequency corresponding to the resonance point is the center frequency point frequency. The return loss characteristic of the center frequency can be less than -20dB. It should be understood that, unless otherwise specified, the antenna / radiator mentioned in this application produces a "first / second... resonance", where the first resonance should be the fundamental mode resonance generated by the antenna / radiator, or the lowest frequency resonance generated by the antenna / radiator. It should be understood that the antenna / radiator can generate one or more antenna modes according to the specific design, and each antenna mode can correspond to a fundamental mode resonance.

[0122] Resonant frequency band: The range of the resonant frequency is the resonant frequency band. The return loss characteristic of any frequency point in the resonant frequency band can be less than -6dB or -5dB.

[0123] Communication frequency band / working frequency band: Regardless of the type of antenna, it always works within a certain frequency range (band width). For example, an antenna that supports the B40 frequency band has a working frequency band that includes frequencies in the range of 2300MHz to 2400MHz, or in other words, the working frequency band of the antenna includes the B40 frequency band. The frequency range that meets the index requirements can be regarded as the working frequency band of the antenna. The width of the working frequency band is called the working bandwidth. The working bandwidth of an omnidirectional antenna may reach 3-5% of the center frequency. The working bandwidth of a directional antenna may reach 5-10% of the center frequency. The bandwidth can be considered as a frequency range on both sides of the center frequency (for example, the resonant frequency of a dipole), where the antenna characteristics are within the acceptable value range of the center frequency.

[0124] The resonant frequency band and the operating frequency band may be the same, or may partially overlap. In one embodiment, one or more resonant frequency bands of the antenna may cover one or more operating frequency bands of the antenna.

[0125] Electrical length: Electrical length can be expressed as the ratio of the physical length (i.e. mechanical length or geometric length) multiplied by the transmission time of an electrical or electromagnetic signal in a medium to the time required for the signal to pass the same distance as the physical length of the medium in free space. The electrical length can satisfy the following formula:

[0126]

[0127] Where L is the physical length, a is the transmission time of the electrical or electromagnetic signal in the medium, and b is the transmission time in free space.

[0128] Alternatively, electrical length can also refer to the ratio of physical length (i.e. mechanical length or geometric length) to the wavelength of the transmitted electromagnetic wave. The electrical length can satisfy the following formula:

[0129]

[0130] Where L is the physical length and λ is the wavelength of the electromagnetic wave.

[0131] In some embodiments of the present application, the physical length of the radiator may be understood as being within ±20%, or within ±10%, or within ±5% of the electrical length of the radiator.

[0132] In the embodiments of the present application, the wavelength in a certain wavelength mode (such as a half-wavelength mode, etc.) of the antenna may refer to the wavelength of the signal radiated by the antenna. For example, the half-wavelength mode of the suspended metal antenna may generate resonance in the 1.575 GHz frequency band, wherein the wavelength in the half-wavelength mode refers to the wavelength of the signal radiated by the antenna in the 1.575 GHz frequency band.

[0133] Wavelength: or operating wavelength, which can be the wavelength corresponding to the center frequency of the resonant frequency or the center frequency of the operating frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, then the operating wavelength can be the wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "operating wavelength" can also refer to the wavelength corresponding to the non-center frequency of the resonant frequency or the operating frequency band.

[0134] It should be understood that the wavelength of the radiation signal in the air can be calculated as follows: (wavelength in air, or wavelength in vacuum) = speed of light / frequency, where frequency is the frequency of the radiation signal (MHz), and the speed of light can be taken as 3×108 m / s. The wavelength of the radiation signal in the medium can be calculated as follows: Among them, ε is the relative dielectric constant of the medium. The wavelength in the embodiments of the present application generally refers to the dielectric wavelength, which can be the dielectric wavelength corresponding to the center frequency of the resonant frequency, or the dielectric wavelength corresponding to the center frequency of the working frequency band supported by the antenna. For example, assuming that the center frequency of the B1 uplink frequency band (resonant frequency is 1920MHz to 1980MHz) is 1955MHz, the wavelength can be the dielectric wavelength calculated using the frequency of 1955MHz. Not limited to the center frequency, "dielectric wavelength" may also refer to the dielectric wavelength corresponding to the non-center frequency of the resonant frequency or the working frequency band. For ease of understanding, the dielectric wavelength mentioned in the embodiments of the present application can be simply calculated by the relative dielectric constant of the medium filled on one or more sides of the radiator.

[0135] End / point: The "end / point" in the first end / second end / feeding end / grounding end / feeding point / grounding point / connection point of the antenna radiator cannot be narrowly understood as an end point or end portion that is physically disconnected from other radiators, but can also be considered as a point or a section on a continuous radiator. In one embodiment, the "end / point" may include a connection / coupling area on the antenna radiator that is coupled to other conductive structures. For example, the feed end / feeding point may be a coupling area on the antenna radiator that is coupled to the feed structure (for example, an area facing a portion of the feed structure). For another example, the ground end / grounding point may be a connection / coupling area on the antenna radiator that is coupled to the ground structure.

[0136] Open end, closed end: In some embodiments, the open end and the closed end are, for example, relative to whether they are grounded. The closed end is grounded, and the open end is not grounded. In some embodiments, the open end and the closed end are, for example, relative to other conductors. The closed end is electrically connected to other conductors, and the open end is not electrically connected to other conductors. In one embodiment, the open end can also be referred to as a suspended end, a free end, an open end, or an open-circuit end. In one embodiment, the closed end can also be referred to as a grounded end or a short-circuit end. It should be understood that in some embodiments, other conductors can be coupled and connected through the open end to transfer coupling energy (which can be understood as transferring current).

[0137] In some embodiments, the "closed end" can also be understood from the perspective of current distribution. The closed end or the grounded end, etc., can be understood as a point with larger current on the radiator, or as a point with smaller electric field on the radiator. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by coupling electronic devices (for example, capacitors, inductors, etc.) through the closed end. In one embodiment, the current distribution characteristics of larger current / small electric field can be maintained by opening a gap at or near the closed end (for example, a gap filled with insulating material).

[0138] In some embodiments, the "open end" can also be understood from the perspective of current distribution. The open end or suspended end, etc., can be understood as a point with smaller current on the radiator, or as a point with larger electric field on the radiator. In one embodiment, coupling electronic devices (for example, capacitors, inductors, etc.) through the open end can maintain the current distribution characteristics of the smaller current point / larger electric field point.

[0139] It should be understood that coupling electronic devices (for example, capacitors, inductors, etc.) at a radiator end at a gap (from the perspective of the structure of the radiator, it is similar to a radiator at an opening of an open end or a suspended end) can make the radiator end a point with larger current / smaller electric field. In this case, it should be understood that the radiator end at the gap is actually a closed end or a grounded end, etc.

[0140] The “suspended radiator” mentioned in the embodiments of the present application means that the radiator is not directly connected to the feeder line / feeder branch and / or the grounding line / grounding branch, but is fed and / or grounded through indirect coupling.

[0141] It should be understood that the "suspended" in "suspended end" or "suspended radiator" does not mean that there is no structure around the radiator to support it. In one embodiment, the suspended radiator can be, for example, a radiator disposed on the inner surface of the insulating back cover.

[0142] The limitations on position and distance such as the middle or middle position mentioned in the embodiments of the present application all represent a certain range. For example, the middle (position) of the conductor can refer to a conductor portion including the midpoint on the conductor, or can be a conductor portion of one-eighth of the wavelength including the midpoint of the conductor, wherein the wavelength can be the wavelength corresponding to the working frequency band of the antenna, can be the wavelength corresponding to the center frequency of the working frequency band, or can be the wavelength corresponding to the resonance point. For another example, the middle (position) of the conductor can refer to a conductor portion on the conductor that is less than a predetermined threshold value (for example, 1 mm, 2 mm, or 2.5 mm) from the midpoint. The middle position of the slot or the middle position of one side of the slot refers to the middle position of one side of the slot.

[0143] The limitations such as collinearity, coaxiality, coplanarity, symmetry (for example, axisymmetry, or center symmetry, etc.), parallelism, perpendicularity, sameness (for example, same length, same width, etc.) mentioned in the embodiments of the present application are all for the current technological level, rather than absolutely strict definitions in a mathematical sense. There may be a deviation of less than a predetermined threshold (for example, 1mm, 0.5m, or 0.1mm) in the line width direction between two collinear radiating branches or the edges of two antenna units. There may be a deviation of less than a predetermined threshold in the direction perpendicular to their coplanar planes between two coplanar radiating branches or the edges of two antenna units. There may be a deviation of a predetermined angle between two antenna units that are parallel or perpendicular to each other. In one embodiment, the predetermined threshold may be less than or equal to a threshold of 1mm, for example, the predetermined threshold may be 0.5mm, or may be 0.1mm. In one embodiment, the predetermined angle may be an angle within a range of ±10°, for example, the predetermined angle deviation is ±5°.

[0144] The current same direction / reverse direction mentioned in the embodiments of the present application should be understood as the direction of the main current on the conductor on the same side is the same direction / reverse direction. For example, when stimulating a distributed current in the same direction on a conductor that is bent or annular (for example, the current path is also bent or annular), it should be understood that, for example, the main currents stimulated on the conductors on both sides of the annular conductor (for example, a conductor surrounding a gap, on the conductors on both sides of the gap) are opposite in direction, but they still belong to the definition of the distributed current in the same direction in the present application. In one embodiment, the current same direction on a conductor may refer to the current on the conductor having no reverse point. In one embodiment, the current reverse on a conductor may refer to the current on the conductor having at least one reverse point. In one embodiment, the current same direction on two conductors may refer to the currents on both conductors having no reverse point and flowing in the same direction. In one embodiment, the current reverse on two conductors may refer to the currents on both conductors having no reverse point and flowing in opposite directions. The current same direction / reverse direction on multiple conductors can be understood accordingly.

[0145] Impedance and impedance matching: The impedance of an antenna generally refers to the ratio of the voltage to the current at the antenna input. Antenna impedance is a measure of the resistance of the antenna to electrical signals. Generally speaking, the input impedance of an antenna is a complex number, the real part is called the input resistance, represented by Ri; the imaginary part is called the input reactance, represented by Xi. Antennas with electrical lengths much smaller than the working wavelength have large input reactances, such as short dipole antennas with large capacitive reactances; small loop antennas with large inductive reactances. The input impedance of a very thin half-wave dipole is about 73.1+j42.5 ohms. In practical applications, in order to facilitate matching, it is generally hoped that the input reactance of a symmetrical dipole is zero, and the length of the dipole at this time is called the resonant length. The length of a resonant half-wave dipole is slightly shorter than half a wavelength in free space, and is generally estimated to be shortened by 5% in engineering. The input impedance of an antenna is related to factors such as the antenna's geometry, size, feed point location, working wavelength, and surrounding environment. When the diameter of a wire antenna is thicker, the input impedance changes more slowly with frequency, and the impedance bandwidth of the antenna is wider.

[0146] The main purpose of studying antenna impedance is to achieve matching between antenna and transmission line. To match the transmitting antenna with the transmission line, the input impedance of the antenna should be equal to the characteristic impedance of the transmission line. To match the receiving antenna with the receiver, the input impedance of the antenna should be equal to the conjugate complex of the load impedance. Usually the receiver has a real impedance. When the impedance of the antenna is complex, a matching network is needed to remove the reactance part of the antenna and make their resistance parts equal.

[0147] When the antenna matches the transmission line, the power transmitted from the transmitter to the antenna or from the antenna to the receiver is the maximum. At this time, there will be no reflected waves on the transmission line, the reflection coefficient is equal to zero, and the standing wave coefficient is equal to 1. The degree of matching between the antenna and the transmission line is measured by the reflection coefficient or standing wave ratio at the antenna input. For the transmitting antenna, if the matching is not good, the radiation power of the antenna will decrease, the loss on the transmission line will increase, the power capacity of the transmission line will also decrease, and in severe cases, the transmitter frequency will be "pulled", that is, the oscillation frequency will change.

[0148] Beam width: divided into horizontal beam width and vertical beam width. The horizontal beam width refers to the angle between the two directions where the radiation power drops by 3dB on both sides of the maximum radiation direction in the horizontal direction; the vertical beam width refers to the angle between the two directions where the radiation power drops by 3dB on both sides of the maximum radiation direction in the vertical direction.

[0149] Antenna gain: It is used to characterize the degree to which the antenna radiates the input power. Generally, the narrower the main lobe of the antenna pattern and the smaller the side lobe, the higher the antenna gain.

[0150] dB: decibel, a logarithmic concept with ten as the base. Decibel is only used to evaluate the proportional relationship between one physical quantity and another physical quantity, and it itself has no physical dimension. For every 10-fold increase in the ratio between two quantities, their difference can be expressed as 10 decibels. For example: A = "100", B = "10", C = "5", D = "1", then, A / D = 20dB; B / D = 10dB; C / D = 7dB; B / C = 3dB. In other words, a difference of 10 decibels between two quantities is a difference of 10 times, a difference of 20 decibels is a difference of 100 times, and so on. A difference of 3dB is a difference of 2 times between the two quantities.

[0151] Antenna return loss: It can be understood as the ratio of the signal power reflected back to the antenna port through the antenna circuit to the transmit power of the antenna port. The smaller the reflected signal, the larger the signal radiated into space through the antenna, and the greater the radiation efficiency of the antenna. The larger the reflected signal, the smaller the signal radiated into space through the antenna, and the lower the radiation efficiency of the antenna.

[0152] Antenna return loss can be expressed by the S11 parameter, which is one of the S parameters. S11 represents the reflection coefficient, which can characterize the quality of the antenna transmission efficiency.

[0153] In one embodiment, the S11 diagram can be understood as a schematic diagram for representing the resonance generated by the antenna. In one embodiment, the resonance shown in the S11 diagram in the portion less than -6dB can be understood as the resonant frequency / frequency range / operating frequency band generated by the antenna. The S11 parameter is usually a negative number. The smaller the S11 parameter is, the smaller the antenna return loss is, and the smaller the energy reflected back by the antenna itself is, which means that more energy actually enters the antenna and the higher the system efficiency of the antenna is; the larger the S11 parameter is, the greater the antenna return loss is, and the lower the system efficiency of the antenna is.

[0154] It should be noted that the S11 value of -4dB can be used as a standard. When the S11 value of the antenna is less than -4dB, it can be considered that the antenna can work normally. It should be understood that the S11 value of -6dB can also be used as a standard in engineering. When the S11 value of the antenna is less than -6dB, it can be considered that the transmission efficiency of the antenna is good.

[0155] Isolation: refers to the ratio of the signal received by another antenna when an antenna transmits a signal to the signal of the transmitting antenna. Isolation is a physical quantity used to measure the degree of mutual coupling between antennas. Assuming that two antennas form a two-port network, the isolation between the two antennas is the S21 and S12 between the antennas. Antenna isolation can be represented by the S21 and S12 parameters, which are also a type of S parameters. The S21 and S12 parameters are usually negative numbers. The smaller the S21 and S12 parameters are, the greater the isolation between the antennas and the smaller the mutual coupling between the antennas; the larger the S21 and S12 parameters are, the smaller the isolation between the antennas and the greater the mutual coupling between the antennas. The isolation of the antenna depends on the antenna radiation pattern, the spatial distance between the antennas, the antenna gain, etc.

[0156] Ground state: corresponds to a section of a radiator, or a radiator in a certain antenna mode, the lowest frequency resonance produced. Among them, "ground state position" or "ground state resonant frequency" refers to the frequency range or resonant frequency corresponding to the ground state of the radiator in a specific antenna mode (for example, the lowest frequency resonance produced). "Ground state" can also be called "fundamental mode". Corresponding to the "ground state" are "higher order" or "higher order mode / higher order mode", or it can also be called "frequency doubling" (for example, triple frequency, quintupling frequency). Unless otherwise specified, the "resonance" in the embodiments of the present application refers to the resonance in the ground state, or the resonance produced by the fundamental mode.

[0157] like Figure 1As shown, an embodiment of the present application provides a communication system 100, which can be applicable to one or more of the following communication technologies: satellite mobile communication system communication technology, bluetooth (BT) communication technology, global positioning system (GPS) communication technology, wireless fidelity (WiFi) communication technology, global system for mobile communications (GSM) communication technology, wideband code division multiple access (WCDMA) communication technology, long term evolution (LTE) communication technology, 5G communication technology and other future communication technologies.

[0158] The communication system 100 may include a communication device 1 and an external antenna 2, wherein the communication device 1 may include an electronic device 20 and an accessory 10 for the electronic device (hereinafter referred to as the accessory 10), and the electronic device 20 may include a mobile phone, a tablet computer, customer premises equipment (hereinafter referred to as CPE), a smart bracelet, a smart watch, etc. Figure 2 As shown, the electronic device 20 has an antenna radiator 200, and the electronic device 20 can transmit signals to the outside or receive signals through the antenna radiator 200 arranged thereon. The accessory 10 is arranged close to the antenna radiator 200 so that the antenna radiator 200 can couple the signal into the accessory 10. The accessory 10 includes a radio frequency connector 120 and an accessory radiator 110, and the external antenna 2 is connected to the radio frequency connector 120. In the use state, the accessory radiator 110 and the antenna radiator 200 are arranged close to and spaced apart, the external antenna 2 is used to transmit signals to the outside or receive signals from the outside, and the antenna radiator 200 can receive signals from the external antenna 2 through the accessory 10, or transmit wireless signals to the external antenna 2 through the accessory 10; that is, the electronic device 20 transmits and receives signals through the external antenna 2. Among them, the use state is the state in which the accessory 10 is adapted to the electronic device 20, that is, the radiator of the accessory 10 is close to the antenna radiator 200 of the electronic device 20.

[0159] Continue to refer to Figure 2 It is understandable that the RF connector 120 may be a universal connector such as an SMA (full name SubMiniatureversion A) RF connector, so as to facilitate connection with Figure 1The external antenna 2 shown is adapted; illustratively, the RF connector 120 may include a connector body and an inner conductor, the connector body may include a metal tube, the inner conductor is arranged inside the connector body, and the inner conductor and the connector body are arranged to be spaced apart, and at least one of the inner conductor and the connector body is coupled and connected to the radiator of the accessory 10. An external thread may be provided on the outer wall of the connector body to facilitate the connection of the RF connector 120 with the external antenna 2; illustratively, the RF connector 120 may be connected to the external antenna 2 via a coaxial cable, and accordingly, the inner conductor may be connected to the core wire of the coaxial cable, and the connector body may be connected to the outer conductor of the coaxial cable. Of course, the embodiment of the present application does not limit the structure of the RF connector 120, as long as the connection between the accessory 10 and the external antenna 2 can be achieved, so that the accessory 10 can transmit signals to the external antenna 2 or receive signals from the accessory radiator 110.

[0160] Continue to refer to Figure 1 In the implementation mode where the communication system 100 is applicable to the satellite mobile communication system, the communication system 100 can communicate with the Tiantong satellite, and accordingly, the electronic device 20 can communicate with the Tiantong satellite through the external antenna 2. Since the satellite mobile communication system has the performances of wide coverage (seamless coverage), all-weather, stable and reliable, the electronic device 20 can still ensure communication functions such as calls and text messages in areas with poor communication environment (such as oceans, mountains, plateaus, forests, Gobi, deserts, etc.).

[0161] Continue to refer to Figure 2 In some embodiments, the communication device 1 includes a housing 30, and the housing 30 is used to accommodate the electronic device 20. In the implementation mode in which the electronic device 20 includes a mobile phone, the housing 30 can be a mobile phone shell. For example, the housing 30 can include a back plate 311 and a side plate 312 surrounding the back plate 311. The side plate 312 and the back plate 311 can be arranged substantially vertically, and the side plate 312 and the back plate 311 form a receiving cavity 320 for accommodating the mobile phone; when the mobile phone is placed in the receiving cavity 320, the back plate 311 is close to the back cover of the mobile phone, and the side plate 312 is arranged outside the mobile phone frame. The housing 30 can be used to protect the mobile phone so as to prevent the mobile phone from being damaged when an external object collides with the mobile phone. The material of the housing 30 can include plastic, rubber, etc., and the embodiment of the present application does not limit the material of the housing 30. In some implementation modes, a decorative pattern or decorative structure can be provided on the housing 30 to improve the decorative effect of the housing 30.

[0162] In some embodiments, the housing 30 also includes the accessory 10 in the above-mentioned implementation method, and the accessory 10 is arranged on the shell 310; the position of the accessory 10 is reasonably set, and when the electronic device 20 is placed in the housing 30, the accessory 10 can be ensured to be close to the antenna radiator 200, so that the antenna of the electronic device can couple the signal to the accessory 10.

[0163] In some embodiments, the communication system 100 is used to communicate with a satellite, and the antenna radiator 200 is used in the electronic device 20 to form a satellite communication antenna. For example, when the electronic device 20 is not used in conjunction with the accessory radiator in the accessory 10, the antenna radiator 200 can be used to feed to generate a first resonance, and the first resonance is used to cover a first frequency, such as the center frequency of the TX (Transmit) frequency band of satellite communication; or the first resonance is used to cover a second frequency, such as the center frequency of the RX (Receive) frequency band of satellite communication. In one embodiment, the first frequency is 2 GHz (for example, corresponding to the TX frequency band of the Tiantong satellite); the second frequency is 2.2 GHz (for example, corresponding to the RX frequency band of the Tiantong satellite).

[0164] For example, in an implementation where the electronic device 20 includes a mobile phone, Figure 3 As shown, the electronic device 20 may include: a cover 210 (cover), a display screen 220 / module (display), a printed circuit board 240 (printed circuitboard, PCB), a middle frame 230 (middle frame) and a rear cover 250 (rear cover). It should be understood that in some embodiments, the cover 210 may be a glass cover (cover glass), and may also be replaced by a cover 210 of other materials, such as an ultra-thin glass material cover, a PET (Polyethylene terephthalate, polyethylene terephthalate) material cover, etc.

[0165] The cover plate 210 may be disposed close to the display screen 220 , and may be mainly used to protect the display screen 220 and prevent dust.

[0166] In one embodiment, the display screen 220 may include a liquid crystal display panel (LCD), a light emitting diode (LED) display panel, or an organic light emitting semiconductor (OLED) display panel, etc., which is not limited in the present application.

[0167] The middle frame 230 mainly supports the entire device. Figure 2It is shown that the PCB is arranged between the middle frame 230 and the back cover 250. It should be understood that in one embodiment, the PCB can also be arranged between the middle frame 230 and the display screen 220, and the embodiment of the present application does not limit this. Among them, the printed circuit board 240 can adopt a flame retardant material (FR-4) dielectric board, or a Rogers dielectric board, or a mixed dielectric board of Rogers and FR-4, and so on. Here, FR-4 is a code for a grade of flame retardant material, and Rogers dielectric board is a high-frequency board. The PCB carries electronic components, such as radio frequency chips.

[0168] In one embodiment, a metal layer may be provided on the printed circuit board 240. The metal layer may be used for grounding the electronic components carried on the printed circuit board 240, and may also be used for grounding other components, such as a bracket antenna, a frame antenna, etc. The metal layer may be referred to as a floor, or a grounding plate, or a grounding layer. In one embodiment, the metal layer may be formed by etching metal on the surface of any layer of a dielectric plate in the PCB. In one embodiment, the metal layer for grounding may be provided on one side of the printed circuit board 240 close to the middle frame 230. In one embodiment, the edge of the printed circuit board 240 may be regarded as the edge of its grounding layer. In one embodiment, the metal middle frame 230 may also be used for grounding the above-mentioned components. The electronic device 20 may also have other floors / grounding plates / grounding layers, as described above, which will not be repeated here.

[0169] Due to the compactness of the interior of the electronic device 20, a floor / grounding plate / grounding layer is usually provided in the internal space 0-2 mm away from the inner surface of the middle frame 230 (for example, the printed circuit board 240, the middle frame 230, the screen metal layer, the battery, etc. can all be regarded as part of the floor). In one embodiment, a medium is filled between the frame 231 and the floor, and the inner surface contour of the filling medium and the length and width of the rectangle enclosed can be simply regarded as the length and width of the floor; the length and width of the rectangle enclosed by the outline formed by superimposing all the conductive parts inside the frame 231 can also be regarded as the length and width of the floor.

[0170] The electronic device 20 may further include a battery (not shown). The battery may be disposed between the middle frame 230 and the back cover 250, or between the middle frame 230 and the display screen 220, and the present application does not limit this. In some embodiments, the PCB is divided into a main board and a sub-board, and the battery may be disposed between the main board and the sub-board, wherein the main board may be disposed between the middle frame 230 and the upper edge of the battery, and the sub-board may be disposed between the middle frame 230 and the lower edge of the battery.

[0171] The electronic device 20 may also include a camera device (not shown in the figure). The camera device may be connected to the PCB, and external images may be acquired through the camera device. Figure 2 When in the shell 30 shown, the back plate 311 is arranged opposite to the display screen 220, that is, the back plate 311 faces and is close to the back cover 250. A through hole 280 can be provided on the back plate 311, and the through hole 280 is facing the camera device to prevent the back plate 311 from blocking the camera device from acquiring external images.

[0172] The electronic device 20 may further include a frame 231, which may be formed of a conductive material such as metal. The frame 231 may be disposed between the display screen 220 and the back cover 250 and extend circumferentially around the periphery of the electronic device 20. The frame 231 may have four sides surrounding the display screen 220 to help fix the display screen 220.

[0173] In one implementation, the frame 231 made of conductive material can be directly used as the conductive frame of the electronic device 20, for example, forming the appearance of a metal frame, suitable for metal industrial design (ID). In one implementation, the outer surface of the frame 231 can be a conductive material, such as a metal material, to form the appearance of a metal frame. In these implementations, the conductive part of the frame 231 can be used as the antenna radiator 200 (such as Figure 2 shown) for use.

[0174] In another implementation, the outer surface of the frame 231 may also be a non-conductive material, such as plastic, to form a non-metallic frame appearance, suitable for non-metallic ID. In one implementation, the inner surface of the frame 231 may include a conductive material, such as a metal material. In this implementation, the conductive portion of the frame 231 may serve as the antenna radiator 200 (e.g., Figure 2 It should be understood that the radiator (or the conductive material on the inner surface of the frame 231) is arranged in close contact with the non-conductive material of the frame 231 to facilitate antenna radiation, and the conductive material and the non-conductive material should be regarded as part of the frame 231.

[0175] The middle frame 230 may include a border 231. The middle frame 230 including the border 231 is an integral part, which can support the electronic devices in the whole machine. The cover 210 and the back cover 250 are respectively covered along the upper and lower edges of the border 231 to form the housing of the electronic device 20. Alternatively, the border 231 may not be regarded as a part of the middle frame 230. In one embodiment, the border 231 may be connected to the middle frame 230 and formed as one piece. In another embodiment, the border 231 may include a protrusion extending inward to be connected to the middle frame 230, for example, by means of shrapnel, screws, welding, etc. In one embodiment, the cover 210, the back cover 250, the border 231, and the middle frame 230 may be collectively referred to as the housing of the electronic device 20. It should be understood that “casing” can be used to refer to part or all of any one of the cover 210 , the back cover 250 , the frame 231 or the middle frame 230 , or to refer to part or all of any combination of the cover 210 , the back cover 250 , the frame 231 or the middle frame 230 .

[0176] The back cover 250 may be a back cover 250 made of a metal material; it may also be a back cover 250 made of a non-conductive material, such as a glass back cover, a plastic back cover, or the like; it may also be a back cover 250 made of both a conductive material and a non-conductive material.

[0177] In one embodiment, the back cover 250 including a conductive material can replace the middle frame 230 and be integrated with the frame 231 to support the electronic devices in the whole device.

[0178] In one embodiment, the conductive parts in the middle frame 230 and / or the back cover 250 can be used as a reference ground for the electronic device 20 , wherein the frame 231 , PCB, etc. of the electronic device 20 can be grounded through an electrical connection with the middle frame 230 .

[0179] In one embodiment, the frame 231 can at least partially serve as the antenna radiator 200 (eg, Figure 2As shown in the figure, the antenna radiator 200 can be provided with a gap between the frame 231 as a radiator and other parts of the middle frame 230, or between the frame 230 and the middle frame 230, so as to ensure that the antenna radiator 200 has a good radiation environment. In one embodiment, an aperture can be provided near the frame 231 as an antenna radiator 200. In one embodiment, the aperture can include an aperture provided inside the electronic device 20, for example, an aperture that is not visible from the exterior surface of the electronic device 20. In one embodiment, the internal aperture can be formed by any one of the middle frame 230, the battery, the circuit board, the back cover 250, the display screen 220, and other internal conductive parts, or by a plurality of them together, for example, the internal aperture can be formed by a structural member of the middle frame 230. In one embodiment, the aperture can also include a slit / opening / opening provided on the frame 231. In one embodiment, the slit / opening / opening on the frame 231 can be a break formed on the frame 231, and the frame 231 is divided into two parts that are not directly connected at the break. In one embodiment, the aperture may also include a gap / slit / opening on the back cover 250 or the display screen 220. In one embodiment, the back cover 250 includes a conductive material, and the aperture provided at the conductive material may be connected to the slit or gap of the frame 231 to form a continuous aperture on the exterior surface of the electronic device 20.

[0180] In one embodiment, the antenna radiator 200 (eg, Figure 2 The antenna radiator 200 may also be disposed in the frame 231. The frame 231 includes a non-conductive material, and the antenna radiator 200 may be located in the electronic device 20 and disposed along the frame 231, or the antenna radiator 200 may be at least partially embedded in the non-conductive material of the frame 231. In one embodiment, the antenna radiator 200 is disposed close to the non-conductive material of the frame 231 to minimize the volume occupied by the antenna radiator 200 and to be closer to the outside of the electronic device 20 to achieve a better signal transmission effect. It should be noted that the antenna radiator 200 being disposed close to the frame 231 means that the antenna radiator 200 may be disposed close to the frame 231, or may be disposed close to the frame 231, for example, there may be a certain small gap between the antenna radiator 200 and the frame 231.

[0181] Figure 3 Only some components of the electronic device 20 are schematically shown, and the actual shapes, sizes and structures of these components are not limited by the drawings.

[0182] It should be understood that in the embodiments of the present application, the surface of the electronic device 20 where the display screen 220 is located can be considered as the front surface, the surface where the back cover 250 is located can be considered as the back surface, and the surface where the frame 231 is located can be considered as the side surface.

[0183] It should be understood that in the embodiments of the present application, it is considered that when a user holds the electronic device 20 (for example, the user holds the electronic device 20 and unlocks it, or for example, the user holds the electronic device 20 vertically and faces the screen), the orientation of the electronic device 20 has a top, a bottom, a left side, and a right side.

[0184] like Figure 2 As shown, in the implementation mode where the antenna radiator 200 of the mobile phone is arranged on the frame 231, the accessory 10 can be arranged on the side plate 312 of the housing 310, so that when the mobile phone is placed in the accommodating cavity 320, the accessory 10 can be ensured to be close to the frame 231 where the antenna radiator 200 is arranged, so as to facilitate signal coupling. Accordingly, the use state can be the state where the mobile phone is placed in the mobile phone case.

[0185] Please refer to Figure 2 and Figure 4 In one embodiment, since the performance of the antenna radiator 200 is subject to the internal space and structure of the electronic device 20, the communication beam angle A (eg Figure 4 In the area within the communication beam angle, the antenna radiator 200 has a certain gain and can transmit and receive signals. In the area outside the beam angle, the gain of the antenna radiator 200 is low, making it difficult to transmit and receive signals, affecting the communication function. In one embodiment, a wide-beam antenna can be designed so that the antenna formed by the antenna radiator 200 has a larger communication beam angle A (such as ±45°, ±50° in the zenith direction). When there are obstructions in the outside world (for example, in forests, mountainous areas, etc.), although the antenna radiator 200 has a larger communication beam angle, the obstruction still has a particularly obvious impact on the communication quality, which can easily lead to call failure or a low call success rate.

[0186] Please refer to Figure 2 and Figure 5 Since the external antenna 2 is not restricted by space and structure, the external antenna 2 can be set larger, so that the communication beam angle A of the external antenna 2 is larger (such as ±60° in the zenith direction), and the gain in the beam angle area may be higher than the gain of the antenna radiator 200 (exemplarily, the gain may be 3dB-4dB higher than the antenna formed by the antenna radiator 200). Therefore, the electronic device 20 has better communication quality when communicating through the external antenna 2 than when communicating only through the antenna radiator 200.

[0187] Exemplarily, the external antenna 2 may include a gooseneck antenna, etc., and the embodiment of the present application does not limit the external antenna 2.

[0188] like Figure 1As shown, in some embodiments, the external antenna 2 can be directly mounted on the RF connector 120 of the accessory 10, and the distance between the external antenna 2 and the RF connector 120 is small, which can reduce the signal loss from the RF connector 120 to the external antenna 2, thereby improving the communication quality. In addition, in this application scenario, the entire communication system 100 is small in size and compact in structure, and the user can make calls and send text messages through the handheld electronic device 20 and the external antenna 2, and the operation is more flexible.

[0189] Please refer to Figure 6 In some embodiments, the communication system 100 is applied to a vehicle-mounted scenario. Accordingly, the external antenna 2 can be arranged on the outside of the vehicle. An exemplary external antenna 2 can be located on the roof 4 to prevent the vehicle from blocking the signal. The external antenna 2 is located on the roof 4. When communicating with the Tiantong satellite, due to the large beam angle of the external antenna 2, direct communication can be performed without satellite alignment, which reduces the complexity of the operation and improves the user experience. The electronic device 20 (such as a mobile phone) and the accessory 10 can be located in the cab or cabin of the vehicle. The external antenna 2 can be connected to the RF connector of the accessory 10 via a coaxial cable 3, so that the user can make and receive calls and send text messages in the car.

[0190] It can be understood that the external antenna 2 can be connected to the roof 4 in a detachable manner. For example, a magnet can be provided on the external antenna 2. When the external antenna 2 is close to the roof 4, the magnetic force between the magnet and the roof 4 can fix the external antenna 2 on the roof 4; or, a suction cup is provided on the external antenna 2. When in use, the suction cup is adsorbed on the roof 4. The suction cup can be fixed to the roof 4 through external air pressure, thereby achieving fixation between the external antenna 2 and the roof 4; of course, the external antenna 2 can also be connected to the roof 4 by gluing or the like, and the embodiments of the present application are not limited to this.

[0191] Continue to refer to Figure 1 and Figure 2 In the accessory 10 provided in the embodiment of the present application, the accessory radiator 110 is spaced apart from the antenna radiator 200 of the electronic device 20, and a signal is coupled from the antenna radiator 200, that is, the antenna radiator 200 couples a signal to the accessory radiator 110, and the RF connector 120 is coupled and connected to the antenna radiator 200 through the accessory radiator 110, and the RF connector 120 is connected to the external antenna 2; through the accessory 10, the electronic device 20 can transmit or receive signals externally through the external antenna 2, and the external antenna 2 has a large gain and beam angle, thereby increasing the communication gain and beam angle of the electronic device 20 and improving the communication quality.

[0192] Continue to refer to Figure 2In some embodiments, the back panel 311 may be rectangular, and the side panel 312 may include a first side panel 313 and a second side panel 314, and the first side panel 313 and the second side panel 314 respectively correspond to the adjacent sides of the back panel 311, that is, the first side panel 313 and the second side panel 314 are adjacent and substantially perpendicular; the first side panel 313 may be a side panel close to the antenna radiator 200, and the corresponding accessory radiator 110 is arranged on the first side panel 313, so that when the mobile phone is installed in the housing 310, the accessory radiator 110 can be close to the antenna radiator 200, and the arrangement is spaced apart to reduce the difficulty of installation.

[0193] In the above implementation, the antenna radiator 200 can be arranged on the frame 231 at the top of the electronic device 20, so that when in use, the antenna radiator 200 faces the zenith direction to prevent external objects such as the user's head from blocking the signal. Accordingly, the first side plate 313 can be the top side plate 312, so that the accessory radiator 110 and the antenna radiator 200 are close to each other.

[0194] In the embodiment of the present application, the structure of the accessory radiator 110, the structure of the antenna radiator 200, and the positional relationship between the accessory radiator 110 and the antenna radiator 200 can be various, which will be described in detail below:

[0195] Please refer to Figure 7 and Figure 8 , Figure 7 The arrow in the middle indicates the direction of the current. The antenna radiator 200 and the accessory radiator 110 may both be along a first direction (e.g. Figure 7 and Figure 8 The first direction may be parallel to the extension direction of the frame 231 of the mobile phone, so that the accessory radiator 110 may be substantially parallel to the frame 231 of the mobile phone.

[0196] Exemplarily, the accessory radiator 110 may include first ends 1111 ( Figure 7 The left end of the orientation shown) and the second end 1121 ( Figure 7 Accordingly, the antenna radiator 200 includes a third end 2611 ( Figure 7 The left end of the orientation shown) and the fourth end 2621 ( Figure 7In one embodiment, the length of the accessory radiator 110 along the first direction may be substantially equal to the length of the antenna radiator 200 along the first direction, for example, the length difference is within ±10%. In one embodiment, the first end 1111 is substantially flush with the third end 2611, and the second end 1121 is substantially flush with the fourth end 2621 along the first direction, for example, the offset difference in the first direction is within ±2 mm. In one embodiment, in a preset plane parallel to the first direction, the projection of the first end 1111 is substantially coincident with the projection of the third end 2611, and the projection of the second end 1121 is substantially coincident with the projection of the fourth end 2621.

[0197] In some embodiments, the third end 2611 may be an open end, or may be used as a feeding end of the antenna radiator 200 to connect to a feeding circuit of the electronic device 20. The feeding circuit may include a radio frequency chip, a switch, and a matching path, the radio frequency chip is connected to the matching path through the switch, and the matching path may include capacitors, inductors, resistors, and other devices to achieve impedance matching. The fourth end 2621 may be an open end, or the fourth end 2621 may be grounded through capacitors, inductors, resistors, and other devices to facilitate impedance matching.

[0198] In some embodiments, the center of the antenna radiator 200 may be grounded. It is understood that the center of the antenna radiator 200 may be a geometric midpoint or an electrical midpoint (or an area within a certain range near the above midpoint).

[0199] The first end 1111 and the second end 1121 of the accessory radiator 110 may both be open ends. The center or a position close to the center of the accessory radiator 110 may be connected to the inner conductor of the RF connector 120, and the connector body of the RF connector 120 may be grounded to achieve the connection between the RF connector 120 and the accessory radiator 110. It is understandable that Figure 2 The housing 310 may be provided with a grounding metal layer, and the connector body of the RF connector 120 may be connected to the grounding metal layer to achieve grounding of the connector body. Exemplarily, the grounding metal layer may be provided on the side plate 312 or the back plate 311 of the housing 310. The embodiment of the present application does not limit the position of the grounding metal layer, as long as the connector body can be grounded.

[0200] In some implementations, the accessory radiator 110 includes a first accessory radiator 111 and a second accessory radiator 112, and the first accessory radiator 111 and the second accessory radiator 112 are spaced apart along a first direction so that a gap is formed between the first accessory radiator 111 and the second accessory radiator 112; the first accessory radiator 111 is disposed close to the third end 2611, and the second accessory radiator 112 is disposed close to the fourth end 2621, and accordingly, the first end 1111 is an end of the first accessory radiator 111 away from the second accessory radiator 112, and the second end 1121 is an end of the second accessory radiator 112 away from the first accessory radiator 111. The first end 1111 and the second end 1121 can be open ends, and accordingly, the fifth end 1112 of the first accessory radiator 111 away from the first end 1111 (that is, the end of the first accessory radiator 111 close to the second accessory radiator 112) can be connected to the inner conductor of the RF connector 120, and the sixth end 1122 of the second accessory radiator 112 away from the second end 1121 (that is, the end of the second accessory radiator 112 close to the first accessory radiator 111) can be connected to the connector body of the RF connector 120; or, the fifth end 1112 of the first accessory radiator 111 away from the first end 1111 can be connected to the connector body of the RF connector 120, and the sixth end 1122 of the second accessory radiator 112 away from the second end 1121 can be connected to the inner conductor of the RF connector 120, so as to realize the connection between the accessory radiator 110 and the RF connector 120.

[0201] Fig. 9 When the antenna radiator 200 couples a signal to the accessory radiator 110, the electric field and magnetic field distribution curves on the antenna radiator 200 and the accessory radiator 110 are shown in FIG. E1 is the electric field strength curve on the accessory radiator 110, H1 is the magnetic field strength curve on the accessory radiator 110, E2 is the electric field strength curve on the antenna radiator 200, and H2 is the magnetic field strength curve on the antenna radiator 200. Fig. 9 It can be seen that the electric field strength points (third end 2611 and fourth end 2621) of the antenna radiator 200 are close to the electric field strength points (first end 1111 and second end 1121) of the accessory radiator 110, and the magnetic field strength points (approximately center position) of the antenna radiator 200 are close to the magnetic field strength points (approximately center position) of the accessory radiator 110, so that the antenna radiator 200 and the accessory radiator 110 are coupled to each other by magnetic coupling.

[0202] Fig.10 for Figure 8 The S parameter curve of the structure shown is given by Fig.10It can be seen that the resonant frequency of the accessory radiator 110 and the antenna radiator 200 is about 2 GHz. Near the resonant frequency, the isolation between the accessory radiator 110 and the antenna radiator 200 is about -11.4 dB, that is, the signal loss between the antenna radiator 200 and the accessory radiator 110 is 11.4 dB.

[0203] Please refer to Fig.11a and Fig.11b , the antenna radiator 200 and the accessory radiator 110 may both extend along the first direction, that is, the length direction of the antenna radiator 200 and the accessory radiator 110 is parallel to the first direction. In the implementation of the electronic device 20 being a mobile phone, the first direction may be parallel to the mobile phone frame 231 ( Figure 2 The extension direction of the accessory radiator 110 is parallel to the frame 231 of the mobile phone, so that the accessory radiator 110 can be roughly parallel to the frame 231 of the mobile phone.

[0204] In some embodiments, the length of the accessory radiator 110 is greater than the length of the antenna radiator 200, that is, the length of the accessory radiator 110 along the first direction is greater than the length of the antenna radiator 200 along the first direction. Since the space between the accessory radiator 110 and the antenna radiator 200 has a certain dielectric constant, such as: Figure 2 The internal structure of the electronic device 20 and the housing 310 all have a certain dielectric constant. By making the length of the accessory radiator 110 greater than the length of the antenna radiator 200, the electrical length of the accessory radiator 110 can be roughly equal to the electrical length of the antenna radiator 200.

[0205] It can be understood that the length of the accessory radiator 110 can be slightly larger than the length of the antenna radiator 200, and the difference between the length of the accessory radiator 110 and the length of the antenna radiator 200 can be reasonably set according to the dielectric constant of the space between the accessory radiator 110 and the antenna radiator 200. The embodiment of the present application does not limit the difference between the length of the accessory radiator 110 and the length of the antenna radiator 200.

[0206] In the above implementation, the length of the accessory radiator 110 is approximately 1 / 2±1 / 8 of the medium working wavelength, wherein the medium working wavelength corresponds to the working frequency of the antenna radiator 200, for example, specifically corresponds to the center frequency of the working frequency band of the antenna radiator 200. The antenna radiator 200 generates a first resonance, the first resonance satellite transmission frequency band or the satellite reception frequency band. In one embodiment, the satellite transmission frequency band includes a 2 GHz frequency or the satellite reception frequency band includes a 2.2 GHz frequency. Exemplarily, the length of the accessory radiator 110 can be 30 mm-75 mm, that is, the length of the accessory radiator 110 along the first direction can be 30 mm-75 mm. In this way, the accessory radiator 110 can be used to couple the signal of the working frequency band of the above-mentioned antenna radiator, such as the Tiantong satellite frequency band. In one embodiment, the accessory radiator 110 configured in this way can also be used to couple the cellular communication frequency band of the above-mentioned antenna radiator, and the working frequency band covers a wider range.

[0207] It can be understood that when the accessory radiator 110 is used to couple the signal of the Tiantong satellite frequency band, the length of the accessory radiator 110 can be 35mm-55mm. At this time, the transmission (TX) frequency band in the Tiantong satellite frequency band can include 2GHz, and the receiving (RX) frequency band can include 2.2GHz.

[0208] In the above implementation, the external antenna 2 is used to generate a second resonance, and the second resonance covers the above-mentioned satellite transmission frequency band or the satellite reception frequency band. For example, the above-mentioned satellite transmission frequency band includes a 2 GHz frequency, and the above-mentioned satellite reception frequency band includes a 2.2 GHz frequency. The working frequency bands of the external antenna 2 and the antenna radiator 200 at least partially overlap, so that the antenna radiator 200 can send signals to the outside or receive signals through the external antenna 2.

[0209] Continue to refer to Fig.11a The accessory radiator 110 may include first ends 1111 ( Fig.11a The left end of the orientation shown) and the second end 1121 ( Fig.11a Accordingly, the antenna radiator 200 includes a third end 2611 ( Fig.11a The left end of the orientation shown) and the fourth end 2621 ( Fig.11a The first end 1111 is disposed close to the third end 2611, and the second end 1121 is disposed close to the fourth end 2621. The first end 1111 and the third end 2611 are disposed spaced apart along the first direction. In some embodiments, in a preset plane parallel to the first direction, the projection of the first end 1111 is located outside the projection of the antenna radiator 200, that is, the first end 1111 extends in a direction away from the antenna radiator 200. Fig. 9As shown, the electric field strength points (third end 2611 and fourth end 2621) of the antenna radiator 200 are close to the electric field strength points (first end 1111 and second end 1121) of the accessory radiator 110, and the magnetic field strength points (center) of the antenna radiator 200 are close to the magnetic field strength points (center) of the accessory radiator 110, so that a large energy storage field is formed between the accessory radiator 110 and the antenna radiator 200, and the signal is not easily coupled into the accessory radiator 110, resulting in a high signal loss between the antenna radiator 200 and the accessory radiator 110. Please refer to Fig.12 By arranging the first end 1111 and the third end 2611 at intervals along the first direction, that is, the electric field strength point of the antenna radiator 200 (the third end 2611) and the electric field strength point of the accessory radiator 110 (the first section 1111) are staggered along the first direction, and the third end 2611 is close to the center (magnetic field strength point) of the accessory radiator 110, so that magneto-electric coupling is formed between the third end 2611 and the corresponding accessory radiator 110, thereby weakening the energy storage field between the antenna radiator 200 and the accessory radiator 110, making it easier for the signal to be coupled into the accessory radiator 110, thereby reducing the signal loss between the antenna radiator 200 and the accessory radiator 110.

[0210] The energy storage field strength between the antenna radiator 200 and the accessory radiator 110 is related to the distance between the antenna radiator 200 and the accessory radiator 110. If the distance is large, the energy storage field strength is weak, and if the distance is small, the energy storage field strength is strong. In some embodiments, due to the space limitation of the accessory installation, the distance between the antenna radiator 200 and the accessory radiator 110 is not greater than 3mm, for example, the distance between the antenna radiator 200 and the accessory radiator 110 is within the range of 1mm-3mm; for example, in the implementation mode where the shell is a mobile phone shell, the distance between the antenna radiator 200 and the accessory radiator 110 is within 1mm-2mm; for example, in other implementation modes, the distance between the antenna radiator 200 and the accessory radiator 110 is 1mm-3mm. The above-mentioned space limitation makes the energy storage field strength between the antenna radiator 200 and the accessory radiator 110 at a certain level, and the above-mentioned energy storage field strength can be enhanced or weakened by adjusting the relative position relationship (for example, relative alignment, or relative offset) between the antenna radiator 200 and the accessory radiator 110. In the embodiment of the present application, the distance between the antenna radiator 200 and the accessory radiator 110 is in the range of 1mm-3mm, the signal loss between the antenna radiator 200 and the accessory radiator 110 is low, and it is convenient to realize the light and thin design of the accessory.

[0211] In the implementation mode where the accessory is arranged on the housing, the distance between the accessory radiator 110 and the inner wall of the housing 30 (the inner wall of the accommodating cavity 320) is 1mm-3mm. This arrangement can also facilitate the realization of a light and thin design of the accessory while ensuring that the signal loss between the antenna radiator 200 and the accessory radiator 110 is low.

[0212] In the above implementation, within a preset plane parallel to the first direction, the projection of the third end 2611 can be located between the projection of the first end 1111 and the midpoint of the accessory radiator 110, that is, the third end 2611 corresponds to the accessory radiator 110 between the first end 1111 and the midpoint, and the third end 2611 can be set close to the midpoint of the accessory radiator 110, so that the electric field strength point of the antenna radiator 200 can be close to the magnetic field strength point of the accessory radiator 110 to form magneto-electric coupling.

[0213] Continue to refer to Fig.12 In some embodiments, the second end 1121 and the fourth end 2621 are spaced apart along the first direction. Such a configuration allows another electric field strength point (the fourth end 2621) of the antenna radiator 200 and another electric field strength point (the second end 1121) of the accessory radiator 110 to be staggered along the first direction, which can further weaken the energy storage field between the antenna radiator 200 and the accessory radiator 110, and further reduce the signal loss between the antenna radiator 200 and the accessory radiator 110.

[0214] In some implementations, in a preset plane parallel to the first direction, the projection of the second end 1121 is located inside the projection of the antenna radiator 200, that is, the fourth end 2621 extends along the first direction away from the accessory radiator 110; accordingly, the accessory radiator 110 is offset as a whole relative to the antenna radiator 200 (that is, the accessory radiator 110 is biased to the left). Through the above arrangement, another electric field strength point (second end 1121) of the accessory radiator 110 and another electric field strength point (fourth end 2621) of the antenna radiator 200 are staggered along the first direction, and the second end 1121 is close to the center (magnetic field strength point) of the antenna radiator 200, so that magneto-electric coupling is formed between the second end 1121 and the corresponding antenna radiator 200; that is, magneto-electric coupling is formed between the third end 2611 and the corresponding accessory radiator 110, and magneto-electric coupling is formed between the second end 1121 and the corresponding antenna radiator 200, and magnetic coupling is formed at the position between the two magneto-electric couplings, which can further weaken the energy storage field between the antenna radiator 200 and the accessory radiator 110, making it easier for the signal to be coupled into the accessory radiator 110, thereby further reducing the signal loss between the antenna radiator 200 and the accessory radiator 110.

[0215] It can be understood that, within a preset plane parallel to the first direction, the projection of the second end 1121 is located between the midpoint of the antenna radiator 200 and the projection of the fourth end 2621, that is, the second end 1121 corresponds to the antenna radiator 200 between the fourth end 2621 and the midpoint, and the second end 1121 can be set close to the midpoint of the antenna radiator 200 so that the electric field strength point of the accessory radiator 110 can be close to the magnetic field strength point of the antenna radiator 200 to form magnetoelectric coupling.

[0216] Please refer to Fig.13 In other implementations, in a plane parallel to the first direction, the projection of the second end 1121 may also be located outside the projection of the antenna radiator 200, that is, the second end 1121 extends along the first direction away from the antenna radiator 200; such a configuration may also allow another electric field strength point (the second end 1121) of the accessory radiator 110 and another electric field strength point (the fourth end 2621) of the antenna radiator 200 to be staggered along the first direction, and the fourth end 2621 is close to the center (magnetic field strength point) of the accessory radiator 110, so that magneto-electric coupling is formed between the fourth end 2621 and the corresponding accessory radiator 110, which may further weaken the energy storage field between the antenna radiator 200 and the accessory radiator 110, so that the signal is more easily coupled into the accessory radiator 110, and the signal loss between the antenna radiator 200 and the accessory radiator 110 is further reduced.

[0217] In the above implementation, the minimum distance between the first end 1111 and the third end 2611 along the first direction and the minimum distance between the second end 1121 and the fourth end 2621 along the first direction may be approximately equal or unequal, and the present application does not impose any limitation on this.

[0218] Fig.15a , Fig.16a , Fig.17a These are schematic diagrams of structures corresponding to when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 5 mm, 10 mm, and 15 mm, respectively; Fig.15b , Fig.16b , Fig.17b are S-curves corresponding to the minimum distances between the first end 1111 and the third end 2611 along the first direction being 5 mm, 10 mm, and 15 mm, respectively. Fig.15b It can be seen that when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 5 mm, the isolation between the accessory radiator 110 and the antenna radiator 200 is approximately -3.1 dB, that is, the signal loss between the accessory radiator 110 and the antenna radiator 200 is approximately 3.1 dB. Fig.16bIt can be seen that when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 10 mm, the isolation between the accessory radiator 110 and the antenna radiator 200 is approximately -1.5 dB, that is, the signal loss between the accessory radiator 110 and the antenna radiator 200 is approximately 1.5 dB. Fig.17b It can be seen that when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 15 mm, the isolation between the accessory radiator 110 and the antenna radiator 200 is about -1.0 dB, that is, the signal loss between the accessory radiator 110 and the antenna radiator 200 is about 1.0 dB. It can be seen that as the minimum distance between the first end 1111 and the third end 2611 along the first direction increases, the signal loss between the accessory radiator 110 and the antenna radiator 200 decreases, and the influence of the distance on the signal loss gradually decreases. In addition, as Fig.10 As shown, by arranging the first end 1111 and the third end 2611 to be spaced apart along the first direction, the signal loss can be reduced from 11.4 dB to below 3.1 dB, thereby reducing the signal loss between the antenna radiator 200 and the accessory radiator 110 .

[0219] Fig.15c for Fig.15a In the antenna matching diagram of the communication device 1 shown, port a is connected to port m of the test device through the first capacitor C1, and port a is also grounded through the first inductor R1; port b can be grounded through the third inductor R3; port c is connected to port n of the test device through the second capacitor C2, and port n is also grounded through the second inductor R2. Reasonable setting of the parameters of the first capacitor C1, the second capacitor C2, the first inductor R1, the second inductor R2, and the third inductor R3 can achieve antenna matching. Among them, the first capacitor C1 can be about 2pF, the second capacitor C2 can be about 2.8pF, the first inductor R1 can be about 7nH, the second inductor R2 can be about 1.7nH, and the third inductor R3 can be about 20nH. Different from the above implementation, in other implementations, port b can be grounded through a capacitor, and the grounding device can be reasonably selected according to the impedance matching situation. It can be understood that the test equipment can be a device for testing the accessory radiator 110 and the antenna radiator 200 to obtain an S curve, and the embodiment of the present application is not limited to this.

[0220] Fig.16c for Fig.16aIn the antenna matching diagram of the communication device 1 shown, port a is connected to port m of the test device; port b is grounded through the second inductor R2; port c is connected to port n of the test device through the first capacitor C1, and port n is also grounded through the first inductor R1. Reasonable setting of the parameters of the first capacitor C1, the first inductor R1, and the second inductor R2 can achieve antenna matching. Among them, the first capacitor C1 can be about 2.8pF, the first inductor R1 can be about 2.8nH, and the second inductor R2 can be about 20nH. Different from the above implementation, in other implementations, port b can be grounded through a capacitor, and the grounding device can be reasonably selected according to the impedance matching situation.

[0221] Fig.17c for Fig.17a In the antenna matching diagram of the communication device 1 shown, port a is connected to port m of the test device; port c is connected to port n of the test device through the first capacitor C1, and port n is also grounded through the first inductor R1. Reasonable setting of the parameters of the first capacitor C1 and the first inductor R1 can achieve antenna matching. Among them, the first capacitor C1 can be about 4pF, and the first inductor R1 can be about 5nH.

[0222] In some implementations, the minimum distance between the first end 1111 and the third end 2611 along the first direction may be greater than 3 mm (such as 4 mm, 5 mm, 10 mm, 15 mm, 20 mm, etc.). When the minimum distance between the first end 1111 and the third end 2611 along the first direction is 3 mm, the isolation between the antenna radiator 200 and the accessory radiator 110 is close to -5.6 dB (loss is 5.6 dB). When the loss is less than or equal to 5 dB, the effect of the loss on the communication quality is almost negligible, and the signal coupling between the antenna radiator 200 and the accessory radiator 110 is good. Therefore, by making the minimum distance between the first end 1111 and the third end 2611 along the first direction greater than 3 mm, it can be ensured that the signal loss between the antenna radiator 200 and the accessory radiator 110 is less than 5 dB, further reducing the signal loss and improving the communication quality.

[0223] Please refer to Fig.18 In the embodiment of the present application, the accessory 10 further includes a dielectric plate 130, and the accessory radiator 110 is stacked on the dielectric plate 130. The dielectric plate 130 can carry the accessory radiator 110 to facilitate the manufacture and installation of the accessory radiator 110. Exemplarily, the accessory radiator 110 may include a metal plate, and accordingly, the metal plate may be connected to the dielectric plate 130 by gluing, and of course, the metal plate may also be formed on the dielectric plate 130 by electroplating. In other implementations, the accessory radiator 110 may include a conductive coating, and accordingly, the accessory radiator 110 may be formed on the dielectric plate 130 by coating.

[0224] The dielectric plate 130 may be located between the accessory radiator 110 and the antenna radiator 200, and may be disposed between the electronic device 20 (eg, Figure 2 In the implementation of the mobile phone shown in the figure, the dielectric plate 130 can be arranged between the frame and the accessory radiator 110. The dielectric plate 130 has a certain dielectric constant. For example, the material of the dielectric plate 130 can include FR4, etc. The embodiment of the present application does not limit the material of the dielectric plate 130.

[0225] In the implementation mode where the housing 30 includes a shell 310 and an accessory 10 disposed on the shell 310, the dielectric plate 130 can be attached to the shell 310, and accordingly, the RF connector 120 can be connected to the shell 310 to achieve fixation between the RF connector 120 and the shell 310. In the implementation mode where the electronic device 20 includes a mobile phone and the housing 30 is a mobile phone shell, the inner side of the side plate 312 of the shell 310 can be provided with a mounting groove, and the dielectric plate 130 can be disposed in the mounting groove so that the inner wall of the accommodating groove is roughly flat. A mounting hole can be provided on the side plate 312 provided with the mounting groove, and the RF connector 120 can be disposed in the mounting hole.

[0226] Continue to refer to Fig.18 In the above implementation, the antenna radiator 200 can be set on the frame 231, and accordingly, the first insulating break 2323 and the second insulating break 2324 can be set at intervals on the frame 231. The antenna radiator 200 includes at least a portion of the conductive frame 231 between the first insulating break 2323 and the second insulating break 2324. Using a portion of the frame 231 as the antenna radiator 200 can improve the structural compactness of the electronic device 20, and can also avoid the frame 231 outside the first insulating break 2323 and the second insulating break 2324 from affecting the antenna radiator 200. Among them, the first end 1111 can be arranged close to the first insulating break 2323. Since the first end 1111 extends in a direction away from the antenna radiator 200, the projection of the accessory radiator 110 on the frame 231 can cover the first insulating break 2323; and the projection of the accessory radiator 110 on the frame 231 is spaced apart from the second insulating break 2324. Since other communication antennas are generally arranged on the frame 231, the projection of the accessory radiator 110 on the frame 231 is spaced apart from the second insulating break 2324, which can prevent the accessory radiator 110 from affecting the operation of other communication antennas.

[0227] In one embodiment, the antenna radiator 200 is disposed on the top frame of the electronic device, for example, the top edge. In one embodiment, the first insulating break 2323 and the second insulating break 2324 are breaks opened on the top edge of the electronic device and filled with an insulating medium. The first insulating break 2323 and the second insulating break 2324 can be symmetrically opened on the top edge of the electronic device. Opening the break can improve the radiation performance of the antenna radiator 200. Opening symmetrical breaks can further ensure the electrical symmetry of the antenna radiator 200 while ensuring the aesthetic appearance, thereby enhancing the directivity and system efficiency of the antenna radiator 200 when operating as a satellite antenna.

[0228] In the above implementation, the antenna radiator 200 can be arranged on the frame 231 at the top of the electronic device 20, so that when in use, the antenna radiator 200 faces the zenith direction to avoid external objects such as the user's head blocking the signal. Fig.19 and Fig. 20 The housing 30 includes a side panel 312 surrounding a back panel 311, and the side panel includes an adjacent first side panel 313 and a second side panel 314, wherein the first side panel 313 may be the side panel 312 at the top of the housing 30, so that when the electronic device 20 is placed in the housing 30, the first side panel 313 is close to a frame 231 on which the antenna radiator 200 is disposed, so that the accessory radiator 110 and the antenna radiator 200 are close to each other.

[0229] In some embodiments, along the length direction (extension direction) of the first side plate 313, the accessory radiator 110 is offset relative to the center of the first side plate, that is, the accessory radiator 110 is biased. The center of the first side plate 313 is the midpoint of the first side plate 313 along its length direction. It can be understood that in the implementation mode in which the accessory radiator 110 includes a first end 1111 and a second end 1121, the center offset of the accessory radiator 110 relative to the first side plate can be that the distances from the first end 1111 and the second end 1121 to the center are not equal. Exemplarily, the difference in distance from the first end 1111 and the second end 1121 to the center can be greater than 1.5 mm (such as 2 mm, 3 mm, etc.). In one embodiment, the antenna radiator of the electronic device can be disposed on the top edge of the electronic device, and centered (for example, offset by no more than 5%) on the top edge. For example, at least a first slit and a second slit are symmetrically (for example, the offset does not exceed 5%) provided on the top frame of the electronic device, and the conductive frame between the first and second slits is used as the antenna radiator; or for example, the antenna radiator is centrally arranged on the inner surface of the top frame of the electronic device (for example, the offset does not exceed 5%). In one embodiment, by arranging the accessory radiator 110 offset to the center of the first side plate, when the electronic device 20 is placed in the housing 30, the first end 1111 and the third end 2611 can be arranged spaced apart along the first direction, that is, the electric field strength point of the antenna radiator 200 and the electric field strength point of the accessory radiator 110 are staggered along the first direction, and the third end 2611 is close to the center of the accessory radiator 110, so that the third end 2611 and the corresponding accessory radiator 110 form a magnetoelectric coupling, thereby reducing the signal loss between the antenna radiator 200 and the accessory radiator 110.

[0230] Continue to refer to Fig.14 , Fig.18 and Fig. 20In some implementations, the accessory radiator 110 includes a first accessory radiator 111 and a second accessory radiator 112, and the first accessory radiator 111 and the second accessory radiator 112 are spaced apart along a first direction so that a gap is formed between the first accessory radiator 111 and the second accessory radiator 112; the first accessory radiator 111 is disposed close to the third end 2611, and the second accessory radiator 112 is disposed close to the fourth end 2621, and accordingly, the first end 1111 is an end of the first accessory radiator 111 away from the second accessory radiator 112, and the second end 1121 is an end of the second accessory radiator 112 away from the first accessory radiator 111. The first end 1111 and the second end 1121 can be open ends, and accordingly, the fifth end 1112 of the first accessory radiator 111 away from the first end 1111 can be connected to the inner conductor of the RF connector 120, and the sixth end 1122 of the second accessory radiator 112 away from the second section can be connected to the connector body of the RF connector 120; or, the fifth end 1112 of the first accessory radiator 111 away from the first end 1111 can be connected to the connector body of the RF connector 120, and the sixth end 1122 of the second accessory radiator 112 away from the second section can be connected to the inner conductor of the RF connector 120, so as to realize the connection between the accessory radiator 110 and the RF connector 120.

[0231] Please refer to Fig.21 In some embodiments, in a preset plane parallel to the first direction, the projection of the first end 1111 is located within the projection of the antenna radiator 200; that is, the third end 2611 extends along the first direction away from the accessory radiator 110. In this way, the electric field strength point (first end 1111) of the accessory radiator 110 can be staggered with the electric field strength point of the antenna radiator 200, thereby reducing the signal loss between the accessory radiator 110 and the antenna radiator 200.

[0232] In some implementations, the antenna radiator 200 includes a main radiator 201 and a parasitic radiator 202 arranged in a first direction, the main radiator 201 includes a third end 2611 and a fourth end 2621, the third end 2611 is arranged close to the first end 1111, the parasitic radiator 202 is located on a side of the third end 2611 away from the fourth end 2621, and the main radiator 201 is used to couple a signal to the parasitic radiator 202. Accordingly, in a preset plane parallel to the first direction, the projection of the first end 1111 is located within the projection of the parasitic radiator 202; the parasitic radiator 202 may include a seventh end 203 and an eighth end 204 arranged along the first direction, the eighth end 204 is arranged close to the third end 2611, and the first end 1111 corresponds to the parasitic radiator 202 between the seventh end 203 and the eighth end 204.

[0233] Please refer to Fig. 22Through the above-mentioned setting, the first end 1111 (electric field strength point) can be staggered with the eighth end 204 (electric field strength point) and the third end 2611 (electric field strength point), and the eighth end 204 (electric field strength point) and the third end 2611 (electric field strength point) are both close to the center (magnetic field strength point) of the accessory radiator 110, so that the first end 1111 (electric field strength point) forms magneto-electric coupling with the eighth end 204 (electric field strength point) and the third end 2611 (electric field strength point), which can increase the magneto-electric coupling area to further weaken the energy storage field between the antenna radiator 200 and the parasitic radiator 202, and further reduce the signal loss between the antenna radiator 200 and the parasitic radiator 202.

[0234] In the implementation method in which the third end 2611 extends along the first direction away from the accessory radiator 110, the second end 1121 and the fourth end 2621 are arranged to be spaced apart along the first direction. Such an arrangement allows the electric field strength point of the antenna radiator 200 (the fourth end 2621) and the electric field strength point of the accessory radiator 110 (the second end 1121) to be staggered along the first direction, which can further weaken the energy storage field between the antenna radiator 200 and the accessory radiator 110, and further reduce the signal loss between the antenna radiator 200 and the accessory radiator 110.

[0235] In some implementations, in a preset plane parallel to the first direction, the projection of the second end 1121 is located inside the projection of the antenna radiator 200 , that is, the fourth end 2621 extends along the first direction away from the accessory radiator 110 . Through the above arrangement, another electric field strength point (second end 1121) of the accessory radiator 110 and another electric field strength point (fourth end 2621) of the antenna radiator 200 are staggered along the first direction, and the second end 1121 is close to the center (magnetic field strength point) of the antenna radiator 200, so that magneto-electric coupling is formed between the second end 1121 and the corresponding antenna radiator 200; that is, magneto-electric coupling is formed between the third end 2611 and the corresponding accessory radiator 110, and magneto-electric coupling is formed between the second end 1121 and the corresponding antenna radiator 200, and magnetic coupling is formed at the position between the two magneto-electric couplings, which can further weaken the energy storage field between the antenna radiator 200 and the accessory radiator 110, making it easier for the signal to be coupled into the accessory radiator 110, thereby further reducing the signal loss between the antenna radiator 200 and the accessory radiator 110.

[0236] It can be understood that, within a preset plane parallel to the first direction, the projection of the second end 1121 is located between the midpoint of the main radiator 201 and the projection of the fourth end 2621, that is, the second end 1121 corresponds to the main radiator 201 between the fourth end 2621 and the midpoint, and the second end 1121 can be set close to the midpoint of the main radiator 201 so that the electric field strength point of the accessory radiator 110 can be close to the magnetic field strength point of the main radiator 201 to form magneto-electric coupling.

[0237] Please refer to Fig.23 In other implementations, in a plane parallel to the first direction, the projection of the second end 1121 may also be located outside the projection of the antenna radiator 200, that is, the second end 1121 extends along the first direction away from the antenna radiator 200; such a configuration may also allow another electric field strength point (the second end 1121) of the accessory radiator 110 and another electric field strength point (the fourth end 2621) of the antenna radiator 200 to be staggered along the first direction, and the fourth end 2621 is close to the center (magnetic field strength point) of the accessory radiator 110, so that magneto-electric coupling is formed between the fourth end 2621 and the corresponding accessory radiator 110, which may further weaken the energy storage field between the antenna radiator 200 and the accessory radiator 110, so that the signal is more easily coupled into the accessory radiator 110, and the signal loss between the antenna radiator 200 and the accessory radiator 110 is further reduced.

[0238] like Fig.21 and Fig.23 In some implementations shown in FIG. 1 , the parasitic radiator 202 and the main radiator 201 may be arranged spaced apart along the first direction, the seventh end 203 may be a ground end, and the eighth end 204 may be an open end. Fig.24 As shown, the parasitic radiator 202 and the main radiator 201 may also be an integrated structure, and accordingly, the eighth end 204 is connected to the third end 2611, and accordingly, the seventh end 203 may be an open end, and the eighth end 204 is a ground end.

[0239] Fig.25a , Fig.26a , Fig.27a They are schematic diagrams of structures corresponding to the implementation of the antenna radiator 200 including the main radiator 201 and the parasitic radiator 202 when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 5 mm, 10 mm, and 15 mm; Fig.25b , Figure 26b , Figure 27b are S-curves corresponding to the minimum distances between the first end 1111 and the third end 2611 along the first direction being 5 mm, 10 mm, and 15 mm, respectively. Fig.25bIt can be seen that when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 5 mm, the isolation between the accessory radiator 110 and the antenna radiator 200 is approximately -1.9 dB, that is, the signal loss between the accessory radiator 110 and the antenna radiator 200 is approximately 1.9 dB. Figure 26b It can be seen that when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 10 mm, the isolation between the accessory radiator 110 and the antenna radiator 200 is approximately -1.4 dB, that is, the signal loss between the accessory radiator 110 and the antenna radiator 200 is approximately 1.4 dB. Figure 27b It can be seen that when the minimum distance between the first end 1111 and the third end 2611 along the first direction is 15 mm, the isolation between the accessory radiator 110 and the antenna radiator 200 is about -1.4 dB, that is, the signal loss between the accessory radiator 110 and the antenna radiator 200 is about 1.4 dB. It can be seen that as the minimum distance between the first end 1111 and the third end 2611 along the first direction increases, the signal loss between the accessory radiator 110 and the antenna radiator 200 decreases, and the influence of the distance on the signal loss gradually decreases. In addition, as Fig.15b , Fig.16b , Fig.17b As shown, when the minimum distances between the first end 1111 and the third end 2611 along the first direction are the same, by making the projection of the first end 1111 within the projection of the parasitic radiator 202, the signal loss between the accessory radiator 110 and the antenna radiator 200 can be further reduced.

[0240] Fig.25c for Fig.25a In the antenna matching diagram of the communication device 1 shown, port a is connected to port m of the test device; port c is connected to port n of the test device through the first capacitor C1, and port n is also grounded through the first inductor R1; port d is grounded through the second inductor R2. Reasonable setting of the parameters of the first capacitor C1, the first inductor R1, and the second inductor R2 can achieve antenna matching. Among them, the first capacitor C1 can be about 2.5pF, the first inductor R1 can be about 2.5nH, and the second inductor R2 can be about 5nH.

[0241] Fig.26c for Fig.26aIn the antenna matching diagram of the communication device 1 shown, port a is connected to port m of the test device through the second capacitor C2; port c is connected to port n of the test device through the first capacitor C1, and port n is also grounded through the first inductor R1; port d is grounded through the second inductor R2. Reasonable setting of the parameters of the first capacitor C1, the second capacitor C2, the first inductor R1, and the second inductor R2 can achieve antenna matching. Among them, the first capacitor C1 can be about 4pF, the second capacitor C2 can be about 4pF, the first inductor R1 can be about 3nH, and the second inductor R2 can be about 5nH.

[0242] like Fig.11a and Fig.21 As shown, the third end 2611 can be used as a feeding end of the antenna radiator 200 to be connected to a feeding circuit of the electronic device 20. Fig.18 As shown, the feeding circuit 270 may include an antenna feeding point 271 (such as a radio frequency chip), a switch 272, and a matching path 273. The antenna feeding point 271 is connected to the matching path 273 through the switch 272. The matching path 273 may include components such as capacitors, inductors, and resistors to achieve impedance matching. The fourth end 2621 may be an open end, or the fourth end 2621 may be grounded through components such as capacitors, inductors, and resistors to facilitate impedance matching.

[0243] like Fig.11b and Fig.21 As shown, in some embodiments, the antenna radiator 200 may be provided with a grounding point, and the grounding point may be located at the center of the antenna radiator 200, or near the center. In some embodiments, the grounding point of the antenna radiator 200 may be located within the middle 1 / 2 of the length of the antenna radiator 200, and the distance between the grounding point and the two open ends of the antenna radiator 200 is greater than 1 / 4 of the length of the antenna radiator 200. It is understandable that the center of the antenna radiator 200 may be a geometric midpoint or an electrical midpoint (or an area within a certain range near the above midpoint). In other embodiments, such as Fig.11a As shown, the antenna radiator 200 may not be provided with a grounding point, and the embodiment of the present application does not limit this.

[0244] The accessory radiator 110 may also be a linear antenna, and the accessory radiator 110 may include a whole conductor, and the first end 1111 and the second end 1121 may both be open ends. The center or a position close to the center of the accessory radiator 110 may be connected to the inner conductor of the RF connector 120, and the connector body of the RF connector 120 may be grounded to achieve the connection between the RF connector 120 and the accessory radiator 110. It is understandable that a grounding metal layer may be provided on the housing 310, and the connector body of the RF connector 120 may be connected to the grounding metal layer to achieve the grounding of the connector body; illustratively, the grounding metal layer may be provided on the side plate 312 or the back plate 311 of the housing 310, and the embodiment of the present application does not limit the position of the grounding metal layer, as long as the grounding of the connector body can be achieved.

[0245] like Fig.28 and Fig.29 As shown, Fig.11a and Fig.11b The difference between the implementation shown is that the accessory radiator 110 and the antenna radiator 200 are both wire antennas, the first end 1111 and the second end 1121 of the accessory radiator 110 are open ends, and a grounding point is provided on the accessory radiator 110, and the grounding point is located between the first end 1111 and the second end 1121. Exemplarily, a grounding metal layer may be provided on the housing 310, and the grounding point of the accessory radiator 110 may be connected to the grounding metal layer through a wire to achieve grounding of the grounding point of the accessory radiator 110. The grounding metal layer may be provided as follows: Figure 2 On the side plate 312 or the back plate 311 of the housing 310 , the embodiment of the present application does not limit the position of the grounding metal layer.

[0246] In some implementations, the grounding point of the accessory radiator 110 may be the center of the accessory radiator 110 or a certain distance from the center (eg, the distance from the center is within 10% of the length of the accessory radiator 110 ), and this embodiment of the present application does not limit this.

[0247] Understandably, Figure 2 The inner conductor of the RF connector 120 shown can be connected to the center of the accessory radiator 110 or a position at a certain distance from the center (such as the distance from the center is within 10% of the length of the accessory radiator 110), and the connector body can be connected to the grounded metal layer to achieve connection between the RF connector 120 and the accessory radiator 110.

[0248] The third end 2611 of the antenna radiator 200 can be a feeding end, the fourth end 2621 of the antenna radiator 200 can be an open end, and the center or a position close to the center of the antenna radiator 200 can be grounded so that the current directions on both sides of the antenna radiation center are the same.

[0249] like Fig.30 and Fig.31 As shown, Fig.11a and Fig.11b The difference between the implementation method shown is that the accessory radiator 110 is a slot antenna (Slot), and the accessory radiator 110 includes a first accessory radiator 111 and a second accessory radiator 112 arranged at intervals along a first direction. The first accessory radiator 111 and the second accessory radiator 112 can be connected to the first floor and enclose a slot with a gap.

[0250] One end of the first accessory radiator 111 away from the second accessory radiator 112 is a first end 1111, and one end of the second accessory radiator 112 away from the first accessory radiator 111 is a second end 1121. The first end 1111 and the second end 1121 are both grounding ends. Exemplarily, the first end 1111 and the second end 1121 can be coupled to the first floor to achieve grounding of the first end 1111 and the second end 1121.

[0251] In the implementation mode where the housing 30 includes a shell 310 and accessories, the first floor, the first accessory radiator 111, and the second accessory radiator 112 can all be arranged on the first side plate 313, the first floor, the first accessory radiator 111, and the second accessory radiator 112 can be located in the same plane, and the first floor, the first accessory radiator 111, and the second accessory radiator 112 can be an integrated structure to simplify the difficulty of making accessories. Of course, the first floor can also be arranged at other positions of the shell 310, and the embodiment of the present application is not limited to this.

[0252] In the above implementation, a first gap 113 is formed between the first accessory radiator 111 and the second accessory radiator 112, an end of the first accessory radiator 111 away from the first end 1111 is the fifth end 1112, an end of the second accessory radiator 112 away from the second end 1121 is the sixth end 1122, and a first gap 113 is formed between the fifth end 1112 and the sixth end 1122.

[0253] Accordingly, Figure 2 The inner conductor of the RF connector 120 shown can be connected to the fifth end 1112, and the connector body of the RF connector 120 can be connected to the sixth end 1122; or, the inner conductor of the RF connector 120 is connected to the sixth end 1122, and the connector body of the RF connector 120 is connected to the fifth end 1112, so as to realize the connection between the RF connector 120 and the accessory radiator.

[0254] The antenna radiator 200 may also be a slot antenna, and the antenna radiator 200 includes a first antenna radiator 261 and a second antenna radiator 262 arranged at intervals along a first direction, an end of the first antenna radiator 261 away from the second antenna radiator 262 is a third end 2611, and an end of the second antenna radiator 262 away from the first antenna radiator 261 is a fourth end 2621; the third end 2611 and the fourth end 2621 are both grounded ends. A second bottom plate is provided on the frame 231 or the PCB, and the first antenna radiator 261 and the second antenna radiator 262 may be coupled and connected to the second floor to form a slot with a gap. The third end 2611 and the fourth end 2621 may be connected to the second floor to achieve grounding.

[0255] In the above implementation, a second gap 263 is formed between the first antenna radiator 261 and the second antenna radiator 262, the end of the first antenna radiator 261 away from the third end 2611 is the ninth end 2612, the end of the second antenna radiator 262 away from the fourth end 2621 is the tenth end 2622, and a second gap 263 is formed between the ninth end 2612 and the tenth end 2622.

[0256] The first slit 113 and the second slit 263 are arranged at intervals along the first direction, that is, the first slit 113 and the second slit 263 are arranged at intervals along the length direction of the accessory radiator 110 .

[0257] In the above implementation, the minimum distance between the first slot 113 and the third end 2611 is smaller than the minimum distance between the second slot 263 and the third end 2611, so that the first slot 113 and the second slot 263 are arranged at intervals along the first direction, and the first slot 113 is closer to the third end 2611. In the implementation in which the projection of the first end 1111 in the preset plane is outside the antenna radiator 200, the minimum distance between the first slot 113 and the third end 2611 is smaller than the minimum distance between the second slot 263 and the third end 2611, so that the lengths of the first accessory radiator 111 and the second accessory radiator 112 can be substantially equal, so as to prevent the lengths of the first accessory radiator 111 and the second accessory radiator 112 from being too large or too small.

[0258] Please refer to Fig.32 and Fig.33 ,and Fig.11a and Fig.11b The difference between the implementations shown is that the accessory radiator 110 is a slot antenna (Slot), the first end 1111 and the second end 1121 of the accessory radiator 110 are both grounded ends, and the accessory radiator 110 can be coupled to the first floor to form a closed slot. Exemplarily, the first end 1111 and the second end 1121 can both be coupled to the first floor to achieve grounding of the first end 1111 and the second end 1121.

[0259] exist Figure 2 In the implementation mode where the housing 30 shown includes a shell 310 and an accessory 10, the first floor, the first accessory radiator 111, and the second accessory radiator 112 can all be arranged on the first side plate 313, the first floor, the first accessory radiator 111, and the second accessory radiator 112 can be located in the same plane, and the first floor, the first accessory radiator 111, and the second accessory radiator 112 can be an integrated structure to simplify the difficulty of making the accessory. Of course, the first floor can also be arranged at other positions of the shell 310, and the embodiment of the present application is not limited to this.

[0260] The antenna radiator 200 may also be a slot antenna, and the third end 2611 and the fourth end 2621 of the antenna radiator 200 are both grounded ends. Figure 3 The frame 231 or PCB is provided with a second floor, and the antenna radiator 200 can be coupled to the second floor to form a closed groove. The third end 2611 and the fourth end 2621 can be coupled to the second floor to achieve grounding. It can be understood that Figure 2 The inner conductor of the RF connector 120 shown can be connected to the accessory radiator 110 between the center and the first end 1111, or the inner conductor can be connected to the accessory radiator 110 between the center and the second end 1121. The connector body can be connected to the first floor to achieve the connection between the RF connector 120 and the accessory radiator 110.

[0261] Below is Figures 34a to 37c To introduce the antenna mode related to the embodiment of the present application. Among them, Fig.34a , Fig.34b It is a schematic diagram of the structure of the common mode of an antenna and the corresponding current and electric field distribution. Fig.35a , Fig.35b It is a schematic diagram showing the structure of the differential mode of an antenna and the corresponding distribution of current and electric field. Fig.34a and Fig.35a The left and right ends of the antenna radiator are open ends, and its common mode mode and differential mode can be called line common mode mode and line differential mode mode respectively. Fig.36a , Fig.36b It is a schematic diagram of the structure of the common mode of an antenna and the corresponding distribution of current, electric field and magnetic current. Fig.37a , Figure 37b It is a schematic diagram of the structure of the differential mode of an antenna and the corresponding distribution of current, electric field and magnetic current. Fig.36a and Fig.37a The left and right ends of the antenna radiator are grounded, for example, coupled with the floor to achieve grounding, and its common mode mode and differential mode can be respectively called slot common mode mode and slot differential mode mode.

[0262] It should be understood that the "common mode mode" or "CM mode" in the embodiments of the present application includes a line common mode mode and a slot common mode mode, and the "differential mode mode" or "DM mode" in the embodiments of the present application includes a line differential mode mode and a slot differential mode mode, which can be specifically determined according to the structure of the antenna.

[0263] 1. Wire common mode (CM) mode

[0264] Fig.34a The radiator 40 of the antenna is shown to be open at both ends and connected to a feeding circuit (not shown) at a middle position 41. In one embodiment, the feeding form of the radiator 40 adopts symmetrical feed. The feeding circuit can be connected to the middle position 41 of the radiator 40 through a feeding line 42. It should be understood that symmetrical feeding can be understood as one end of the feeding circuit is connected to the radiator, and the other end is coupled to the floor to achieve grounding, wherein the connection point (feeding point) between the feeding circuit and the radiator 40 is located at the center of the radiator, wherein the center of the radiator can be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or an area within a certain range near the above midpoint).

[0265] The middle position 41 of the radiator 40 may be, for example, the geometric center of the radiator or the midpoint of the electrical length of the radiator. In one embodiment, the feed line 42 is connected to the radiator 40 via a connector such as a spring, and the connection between the connector and the radiator 40 covers the middle position 41.

[0266] Fig.34b The current and electric field distribution of the antenna 40 are shown. Fig.34b As shown, the current is distributed in opposite directions on both sides of the middle position 41, for example, symmetrically; the electric field is distributed in the same direction on both sides of the middle position 41. Fig.34b As shown, the current at the feeder 42 is distributed in the same direction. Based on the current distribution in the same direction at the feeder 42, Fig.34b The feeding shown can be called line CM feeding. Based on the opposite distribution of current on both sides of the radiator, Fig.34b The antenna mode shown may be referred to as a linear CM mode (may also be referred to as a CM mode for short, for example, for a linear antenna, the CM mode refers to a linear CM mode). Fig.34b The current and electric field shown can be referred to as the current and electric field of the line CM mode, respectively.

[0267] The current is stronger at the middle position 41 of the radiator 40 (the current is stronger near the middle position 41 of the radiator 40), and weaker at both ends of the radiator 40, such as Fig.34b The electric field is weaker at the middle position 41 of the radiator 40 and stronger at the two ends of the antenna 40 .

[0268] In the embodiment of the present application, for a radiator with open ends, the current thereon is distributed inversely on the radiator, and the current amplitude is large in the middle and small at both ends of the radiator, then the antenna mode corresponds to the line common mode.

[0269] Fig.34c for Fig.28 The current curve of the accessory radiator 110 is shown in FIG. 1 . The distance between the curve and the accessory radiator 110 is positively correlated with the amplitude of the current. Fig.34c It can be seen that the first end 1111 and the second end 1121 of the accessory radiator 110 are open ends, the current is reversely distributed in the accessory radiator 110, the current amplitude is large in the middle and small at both ends on the radiator, and the antenna mode of the accessory radiator 110 corresponds to the line common mode. Similarly, the antenna mode of the corresponding antenna radiator 200 also corresponds to the line common mode.

[0270] 2. Line differential mode (DM) mode

[0271] like Fig.35a The left and right ends of the radiator 50 are shown as open ends, and a feeding circuit is connected at a middle position 51. In one embodiment, the feeding form of the radiator 50 adopts an anti-symmetrical feed. One end of the feeding circuit is connected to a part of the radiator 50 through a feeding line 52, and the other end of the feeding circuit is connected to another part of the radiator 50 through the feeding line 52. The middle position 51 may include the geometric center of the radiator 50.

[0272] It should be understood that the "center antisymmetric feeding" mentioned in the embodiments of the present application can be understood as that the positive and negative poles of the feeding unit are respectively connected to two connection points near the above-mentioned midpoint of the radiator. In one embodiment, the signals output by the positive and negative poles of the feeding unit have the same amplitude and opposite phases, for example, the phase difference is 180°±10°.

[0273] Fig.35b The current and electric field distribution of the radiator 50 are shown. Fig.35b As shown, the current is distributed in the same direction on both sides of the middle position 51 of the radiator 50, for example, in an anti-symmetrical distribution; the electric field is distributed in opposite directions on both sides of the middle position 51. Fig.35b As shown, the current at the feeder 52 presents a reverse distribution. Based on the reverse distribution of the current at the feeder 52, Fig.35a The feeding shown can be called line DM feeding. Based on the current distribution on both sides of the radiator, Fig.35b The antenna mode shown may be referred to as a linear DM mode (may also be referred to as a DM mode for short, for example, for a linear antenna, the DM mode refers to a linear DM mode). Fig.35bThe current and electric field shown can be referred to as the current and electric field in the line DM mode, respectively.

[0274] The current is stronger at the middle position 51 of the antenna 50 (the current is stronger near the middle position 51 of the antenna 50), and weaker at both ends of the antenna 50, such as Fig.35b The electric field is weak at the middle position 51 of the antenna 50 and is strong at both ends of the antenna 50 .

[0275] In the embodiment of the present application, for a radiator with open ends, the current thereon is distributed in the same direction on the radiator, and the current amplitude is large in the middle and small at both ends of the radiator, then the antenna mode corresponds to the line differential mode.

[0276] Fig.35c for Fig.11a and Fig.21 The current curve of the accessory radiator 110 is shown in FIG. 1 . The distance between the curve and the accessory radiator 110 is positively correlated with the amplitude of the current. Fig.35c It can be seen that the end 1111 and the second end 1121 of the accessory radiator 110 are open ends, the current on the accessory radiator 110 is distributed in the same direction, and the current amplitude is large in the middle and small at both ends of the radiator, so the antenna mode of the accessory radiator 110 corresponds to the line differential mode mode. Similarly, the antenna mode of the corresponding antenna radiator 200 also corresponds to the line differential mode mode.

[0277] 3. Slot CM mode

[0278] Fig.36a The radiator of the antenna shown has a hollow slot or gap 61, or it can be regarded that the radiator 60 of the antenna and the floor (for example, the ground layer of the PCB) enclose the slot or slot 61. In one embodiment, the slot 61 can be formed by cutting a slot on the floor. In one embodiment, the slot 61 can be enclosed by coupling the two ends of the radiator 60 with the floor. An opening 62 is provided on one side of the slot 61, and the opening 62 can be specifically opened at the middle position of the side. The middle position of the side of the slot 61 can be, for example, the geometric midpoint of the radiator 60, or the midpoint of the electrical length of the radiator, for example, the area where the opening 62 is opened on the radiator covers the middle position of the side. The opening 62 can be connected to the feeding circuit, and antisymmetric feeding is adopted. It should be understood that antisymmetric feeding can be understood as that the positive and negative poles of the feeding circuit are respectively connected to the two ends of the radiator. The positive and negative poles of the feeding circuit output signals with the same amplitude and opposite phases, for example, the phase difference is 180°±10°.

[0279] Fig.36b The distribution of current, electric field and magnetic current on the radiator 60 (which may also include the floor) is shown. Fig.36aAs shown, the current on the conductor (such as the floor, and / or the radiator 60) around the slot 61 is distributed in the same direction around the slot 61, the electric field is distributed in opposite directions on both sides of the opening 61 of the slot 61, and the magnetic current is distributed in opposite directions on both sides of the middle position of the slot 61. Fig.36b As shown, the electric field at the opening 62 (for example, the feeding point) is in the same direction, and the magnetic current at the opening 62 (for example, the feeding point) is in the same direction. Based on the same direction of the magnetic current at the opening 62 (the feeding point), Fig.36a The feeding shown may be referred to as slot CM feeding. Based on the current being distributed in the same direction (e.g., anti-symmetric distribution) on the radiators on both sides of the opening 62, or based on the current being distributed in the same direction around the slot 61 on the conductors around the slot 61, Fig.36b The antenna mode shown can be called a slot CM mode (can also be simply referred to as a CM mode. For example, for a slot antenna, the CM mode refers to a slot CM mode). Fig.36b The electric field, current, and magnetic current distributions shown can be called the electric field, current, and magnetic current of the slot CM mode.

[0280] The magnetic field is weaker in the middle of the radiator 60 and stronger at both ends of the radiator 60. The electric field is stronger in the middle of the radiator 60 (the largest point of the electric field is located near the middle of the radiator 60) and weaker at both ends of the radiator 60, such as Fig.36b shown.

[0281] In an embodiment of the present application, for a radiator with grounded ends and an opening in the middle, the current on the radiator is distributed in the same direction on both sides of the opening, and the current amplitude is large at the two ends and small near the opening on the radiator, then the antenna mode corresponds to the slot common mode.

[0282] Fig.36c for Fig.30 and Fig.31 The current curve of the accessory radiator 110 is shown in FIG. 1 . The distance between the curve and the accessory radiator 110 is positively correlated with the amplitude of the current. Fig.36c It can be seen that the first end 1111 and the second end 1121 of the accessory radiator 110 are grounded and the middle is open, and the current on it is distributed in the same direction on both sides of the opening, and the current amplitude is large at the two ends and small near the opening on the radiator, so the antenna mode of the accessory radiator 110 corresponds to the slot common mode. Similarly, the antenna mode of the corresponding antenna radiator 200 also corresponds to the slot common mode.

[0283] 4. Slot DM mode

[0284] like Fig.37aThe radiator of the antenna shown has a hollow slot 72 or a gap, or it can be regarded as that the radiator 70 of the antenna and the floor (such as the ground layer of the PCB) enclose the slot or slot 72. In one embodiment, the slot 72 can be formed by cutting a slot on the floor. In one embodiment, the slot 72 can be enclosed by coupling the two ends of the radiator 70 with the floor. The middle position 71 of the slot 72 is connected to the feeding circuit, and symmetrical feeding is adopted. It should be understood that symmetrical feeding can be understood as one end of the feeding circuit is connected to the radiator, and the other end is coupled to the floor to achieve grounding, wherein the connection point between the feeding circuit and the radiator (feeding point) is located at the center of the radiator, and the center of the radiator can be, for example, the midpoint of the geometric structure, or the midpoint of the electrical length (or an area within a certain range near the above midpoint). The middle position of one side of the slot 72 is connected to the positive pole of the feeding circuit, and the middle position of the other side of the slot 72 is connected to the negative pole of the feeding circuit. The middle position of the side of the slot 72 may be, for example, the middle position of the radiator 70, and / or the middle position of the floor, such as the geometric midpoint of the radiator 70, or the midpoint of the electrical length of the radiator, such as the connection between the feeding circuit and the radiator covering the middle position 71 of the side.

[0285] Figure 37b The current, electric field, and magnetic current distribution on the radiator 70 (which may also include the floor) are shown. Figure 37b As shown, on the conductor (such as the floor, and / or the radiator 70) around the slot 72, the current is distributed around the slot 72, and is distributed in opposite directions on both sides of the middle position of the slot 72, the electric field is distributed in the same direction on both sides of the middle position 71, and the magnetic current is distributed in the same direction on both sides of the middle position 71. The magnetic current at the feeding circuit is distributed in opposite directions (not shown). Based on the magnetic current at the feeding circuit being distributed in opposite directions, Fig.37a The feeding shown may be referred to as slot DM feeding. Based on the current being distributed in opposite directions (e.g., symmetrically) on both sides of the radiator 70, or based on the current being distributed in opposite directions (e.g., symmetrically) around the slot 71, Figure 37b The antenna mode shown can be called a slot DM mode (can also be simply referred to as a DM mode. For example, for a slot antenna, the DM mode refers to a slot DM mode). Figure 37b The electric field, current, and magnetic current distributions shown can be called the electric field, current, and magnetic current of the slot DM mode.

[0286] The current is weaker in the middle of the radiator 70 and stronger at both ends of the radiator 70. The electric field is stronger in the middle of the radiator 70 (the largest point of the electric field is near the middle of the radiator 60) and weaker at both ends of the radiator 70, such as Figure 37b shown.

[0287] In the embodiment of the present application, for a radiator with both ends grounded, the current on the radiator is distributed inversely, and the current amplitude is large at both ends and small in the middle of the radiator, then the antenna mode corresponds to the slot differential mode.

[0288] Fig.37c for Fig.32 and Fig.33 The current curve of the accessory radiator 110 is shown in FIG. 1 . The distance between the curve and the accessory radiator 110 is positively correlated with the amplitude of the current. Fig.37c It can be seen that the first end 1111 and the second end 1121 of the accessory radiator 110 are grounded, and the current thereon is reversely distributed on the radiator, and the current amplitude is large at the two ends and small in the middle on the radiator, so the antenna mode of the accessory radiator 110 corresponds to the slot differential mode mode. Similarly, the antenna mode of the corresponding antenna radiator 200 also corresponds to the slot differential mode mode.

[0289] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An accessory for an electronic device, characterized in that: The accessories include: an accessory radiator configured to be spaced apart from an antenna radiator of the electronic device and to couple a signal from the antenna radiator; A radio frequency connector is coupled to the accessory radiator and is configured to be connected to an external antenna.

2. The accessory according to claim 1, characterized in that: The length of the accessory radiator is 1 / 2±1 / 8 of the medium working wavelength, wherein the medium working wavelength corresponds to the working frequency of the antenna radiator of the electronic device.

3. The accessory according to claim 1 or 2, characterized in that: The accessory further includes a dielectric plate, the accessory radiator is stacked on the dielectric plate, and the dielectric plate is configured to be disposed between the accessory radiator and the antenna radiator.

4. The accessory according to any one of claims 1 to 3, characterized in that: The length of the accessory radiator is greater than the length of the antenna radiator.

5. The accessory according to any one of claims 1 to 4, characterized in that: When the accessory is in use, the accessory radiator and the antenna radiator both extend along a first direction, the accessory radiator includes a first end and a second end, the antenna radiator includes a third end and a fourth end, the first end is close to the third end relative to the second end; the first end and the third end are spaced apart along the first direction.

6. The accessory according to claim 5, characterized in that The second end and the fourth end are arranged to be spaced apart along the first direction.

7. The accessory according to claim 6, characterized in that In a preset plane parallel to the first direction, a projection of the second end on the preset plane falls on a projection of the antenna radiator on the preset plane.

8. The accessory according to any one of claims 5 to 7, characterized in that: In a preset plane parallel to the first direction, a projection of the first end is located outside a projection of the antenna radiator.

9. The accessory according to any one of claims 5 to 8, characterized in that: The first end and the second end are both open ends.

10. The accessory according to any one of claims 5 to 8, characterized in that: In a preset plane parallel to the first direction, the projection of the first end is located within the projection of the antenna radiator.

11. The accessory according to any one of claims 5 to 10, characterized in that: A minimum distance between the first end and the third end along the first direction is greater than 3 mm.

12. The accessory according to any one of claims 1 to 11, characterized in that: The accessory radiator includes a first accessory radiator and a second accessory radiator spaced apart along a first direction, and an end of the first accessory radiator close to the second accessory radiator and an end of the second accessory radiator close to the first accessory radiator are coupled to the RF connector.

13. A housing, characterized in that: It comprises a shell and the accessory according to any one of claims 1 to 12, wherein the accessory is arranged on the shell, the shell is configured to accommodate an electronic device, and wherein the accessory radiator is arranged inside the shell.

14. The housing according to claim 13, characterized in that The shell includes a back plate and a side plate surrounding the back plate, the side plate is vertically arranged to the back plate, and the side plate and the back plate form a receiving cavity for receiving the electronic device; the back plate is rectangular, and the side plate includes a first side plate and a second side plate, the first side plate and the second side plate correspond to the sides adjacent to the back plate, and the accessory radiator is arranged on the first side plate.

15. The housing according to claim 14, characterized in that Along the length direction of the first side plate, the accessory radiator is offset relative to the center of the first side plate.

16. The housing according to any one of claims 13 to 15, characterized in that: The distance between the accessory radiator and the inner wall of the shell is 1mm-3mm.

17. A communication device, characterized in that: The invention comprises an electronic device and a housing as claimed in any one of claims 13 to 16, wherein the housing is used to accommodate the electronic device.

18. A communication device, characterized in that: It comprises an electronic device and the accessory according to any one of claims 1 to 12, wherein the accessory is used to be arranged close to an antenna radiator of the electronic device.

19. The communication device according to claim 17 or 18, characterized in that: The electronic device comprises a frame, a first insulating break and a second insulating break are arranged on the frame, and the antenna radiator comprises at least a portion of the conductive frame between the first insulating break and the second insulating break; The projection of the accessory radiator on the frame covers the first insulating gap, and the projection of the accessory radiator on the frame is spaced from the second insulating gap.

20. The communication device according to claim 17 or 18, characterized in that: The antenna radiator comprises a main radiator and a parasitic radiator arranged along a first direction, the main radiator comprises a third end and a fourth end, the parasitic radiator is located on a side of the third end away from the fourth end, and the main radiator is used to couple a signal to the parasitic radiator; The accessory radiator includes a first end and a second end. In a preset plane parallel to the first direction, a projection of the first end is located within a projection of the parasitic radiator.

21. The communication device according to claim 20, characterized in that The parasitic radiator and the main radiator are arranged to be spaced apart along the first direction.

22. The communication device according to claim 17 or 18, characterized in that: The distance between the accessory radiator and the antenna radiator is 1mm-3mm.

23. The communication device according to claim 17 or 18, characterized in that: The antenna radiator is used to generate a first resonance, and the first resonance covers a satellite transmission frequency band or a satellite reception frequency band.

24. The communication device according to claim 23, characterized in that The length of the accessory radiator may be 35 mm-55 mm.

25. A communication system, characterized in that: It comprises the communication device as described in any one of claims 17-24 and an external antenna, wherein the external antenna is connected to the radio frequency connector, and the external antenna is used to generate a second resonance, and the second resonance covers the satellite transmission frequency band or the satellite reception frequency band.

26. The communication system according to claim 25, characterized in that The satellite transmission frequency band includes a 2 GHz frequency, and the satellite reception frequency band includes a 2.2 GHz frequency.

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