Antenna and electronic equipment

Abstract

The invention relates to the technical field of antennas, provides an antenna and electronic equipment, and can solve the problem that an antenna in the related technology cannot meet communication requirements of different communication functions. The antenna comprises a main radiator, a first parasitic radiator, a second parasitic radiator and a tuning device, the main radiating body is arranged between the first parasitic radiating body and the second parasitic radiating body, a first gap is formed between the first parasitic radiating body and the main radiating body, and the main radiating body is provided with a feeding point and a first connecting point; the first parasitic radiator is provided with a second connection point and a third connection point, and the second connection point is connected with the reference ground; the second parasitic radiator is provided with a fourth connection point and a fifth connection point, and the fourth connection point is connected with the reference ground; the tuning device comprises a first tuner and a second tuner, the first tuner is connected between the third connection point and the reference ground, and the second tuner is connected between the fifth connection point and the reference ground. The method can be applied to electronic equipment such as a foldable mobile phone and a tablet personal computer.

Description

Technical Field

[0001] This application relates to the technical field of antennas, and in particular, to an antenna and an electronic device. Background Art

[0002] With the rapid development of communication technologies, electronic devices such as mobile phones and tablet computers have more and more communication functions, such as cellular network communication, WIFI (wireless fidelity) communication, and satellite communication. Since different communication functions have different communication characteristics, different requirements need to be put forward for the design of the antennas of electronic devices for different communication functions, so as to achieve the best user experience. For example, for satellite communication, the electronic device needs to communicate with a satellite above the zenith. Then it is required that the radiation pattern of the electronic device antenna is the strongest towards the zenith, and the beam width is relatively wide, so as to have a higher gain to obtain a better communication experience. For another example, for WIFI communication, usually users are distributed at different positions indoors. Therefore, the radiation pattern of the WIFI antenna of the electronic device should be designed to radiate evenly in all directions, and the directivity coefficient of the antenna should be low, so that users at different positions can obtain a better communication experience. Thus, how to design the antenna of an electronic device to meet the requirements of different communication functions has become one of the important topics in the industry. Summary of the Invention

[0003] Embodiments of this application provide an antenna and an electronic device, which are used to solve the problem that the antenna of an electronic device in the related art cannot meet the communication requirements of different communication functions.

[0004] To achieve the above object, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, an embodiment of this application provides an antenna, including a radiator and a tuning device. The radiator includes a main radiator, a first parasitic radiator, and a second parasitic radiator. The main radiator is disposed between the first parasitic radiator and the second parasitic radiator. There is a first gap between the first parasitic radiator and the main radiator. The main radiator has a feeding point and a first connection point. The feeding point is used to connect to a feed source, and the first connection point is connected to a reference ground. The first parasitic radiator has a second connection point and a third connection point. The second connection point is connected to the reference ground. The second parasitic radiator has a fourth connection point and a fifth connection point. The fourth connection point is connected to the reference ground. The tuning device includes a first tuner and a second tuner. The first tuner is connected between the third connection point and the reference ground, and the second tuner is connected between the fifth connection point and the reference ground.

[0006] In the antenna according to the embodiments of the present application, by providing a first parasitic radiator and a second parasitic radiator on both sides of the main radiator, and connecting the first parasitic radiator to a first tuner and the second parasitic radiator to a second tuner, according to the characteristics of different communication functions, the tuning device can load different configurations to the first parasitic radiator and the second parasitic radiator, so that at least one of the first parasitic radiator and the second parasitic radiator can regulate the magnitude distribution of the current on the reference ground, thereby realizing the regulation of the radiation pattern of the antenna, and further being beneficial to improving the user experience.

[0007] In some embodiments, the tuning device further includes a third tuner, and the third tuner is connected between the second connection point and the reference ground. With such a setting, more matching can be loaded to the first parasitic radiator to adjust the resonant frequency of the first parasitic radiator.

[0008] In some embodiments, the tuning device has a first state. When the tuning device is in the first state, the resonant frequencies of both the first parasitic radiator and the second parasitic radiator are less than the resonant frequency of the main radiator. With such a setting, both the first parasitic radiator and the second parasitic radiator can regulate the magnitude distribution of the current on the reference ground, thereby better regulating the radiation pattern of the antenna.

[0009] In some embodiments, when the tuning device is in the first state, the inductive element of the first tuner is connected between the third connection point and the reference ground, and the capacitive element of the second tuner is connected between the fifth connection point and the reference ground; the capacitive element or the 0-ohm resistor of the third tuner is connected between the second connection point and the reference ground. With such a setting, the resonant frequencies of the first parasitic radiator and the second parasitic radiator can be better adjusted.

[0010] In some embodiments, the tuning device further includes a feeder tuner. The feeder tuner includes a first inductive element and a first capacitive element. The first electrode of the first capacitive element is connected to the feeding point, and the second electrode of the first capacitive element is used to connect to the feed source; one end of the first inductive element is connected between the feeding point and the first electrode, and the other end is connected to the reference ground. With such a setting, the impedance matching of the antenna and the resonant frequency of the main radiator can be better adjusted.

[0011] In some embodiments, the tuning device further includes a feeder tuner. The feeder tuner includes a first inductive element, a first capacitive element, and a second capacitive element. The first electrode of the first capacitive element is connected to the feeding point, and the second electrode of the first capacitive element is used to connect to the feed source; one end of the first inductive element is connected between the feeding point and the first electrode, and the other end is connected to the reference ground, and the second capacitive element is connected between the second electrode and the reference ground. With such a setting, the impedance matching of the antenna and the resonant frequency of the main radiator can be better adjusted.

[0012] In some embodiments, the radiator further includes a third parasitic radiator located on a side of the first parasitic radiator away from the first gap; the third parasitic radiator has a sixth connection point and a seventh connection point, and the sixth connection point is connected to the reference ground; the tuning device further includes a fourth tuner connected between the seventh connection point and the reference ground. With such an arrangement, the third parasitic radiator can further regulate the current on the reference ground, thereby better regulating the radiation pattern of the antenna.

[0013] In some embodiments, the tuning device has a second state. When the tuning device is in the second state, the resonance frequency of the first parasitic radiator is greater than that of the main radiator, and the resonance frequency of the second parasitic radiator is less than that of the main radiator. With such an arrangement, the antenna efficiency can be improved.

[0014] In some embodiments, when the tuning device is in the second state, the inductive element and the capacitive element of the third tuner are connected in parallel and connected between the third connection point and the reference ground, the first tuner is in an open state, and the capacitive element of the second tuner is connected between the fifth connection point and the reference ground; the capacitive element of the fourth tuner is connected between the seventh connection point and the reference ground. With such an arrangement, the resonance frequencies of the first parasitic radiator and the second parasitic radiator can be better adjusted, which is beneficial for the first parasitic radiator to improve the antenna efficiency.

[0015] In some embodiments, the tuning device has a third state. When the tuning device is in the third state, the 0-ohm resistor of the second tuner is connected between the fifth connection point and the connecting member, the resonance frequency of the first parasitic radiator is less than that of the main radiator, and the resonance frequency of the third parasitic radiator is greater than that of the main radiator. With such an arrangement, the radiation pattern can be regulated and the antenna efficiency can also be improved.

[0016] In some embodiments, when the tuning device is in the third state, the inductive element of the first tuner is connected between the third connection point and the reference ground, and the 0-ohm resistor of the third tuner is connected between the second connection point and the reference ground; the inductive element of the fourth tuner is connected between the seventh connection point and the reference ground. With such an arrangement, the resonance frequencies of the first parasitic radiator and the third parasitic radiator can be better adjusted, which is beneficial for better suppressing the current on the reference ground and improving the antenna efficiency.

[0017] In some embodiments, the tuning device has a fourth state. When the tuning device is in the fourth state, the 0-ohm resistor of the second tuner is connected between the fifth connection point and the connector. The resonance frequency of the first parasitic radiator is greater than that of the main radiator, and the resonance frequency of the third parasitic radiator is greater than that of the main radiator. With such a setting, the antenna efficiency can be improved. In some embodiments, when the tuning device is in the fourth state, the inductive element of the first tuner is connected between the third connection point and the reference ground, and the inductive element of the third tuner is connected between the second connection point and the reference ground. With such a setting, the resonance frequency of the first parasitic radiator can be better adjusted, which is beneficial for the first parasitic radiator to improve the antenna efficiency.

[0018] In some embodiments, the radiator further includes a fourth parasitic radiator. The fourth parasitic radiator is connected to the third parasitic radiator, and at least part of the fourth parasitic radiator is located on the side of the third parasitic radiator away from the first parasitic radiator. The fourth parasitic radiator has an eighth connection point. The sixth connection point is located between the seventh connection point and the eighth connection point, and the seventh connection point is located between the sixth connection point and the first parasitic radiator. The tuning device further includes a fifth tuner, and the fifth tuner is connected between the eighth connection point and the reference ground. With such a setting, the fourth parasitic radiator can further suppress the current on the reference ground, thereby regulating the radiation pattern of the antenna and making the radiation pattern of the antenna more uniform.

[0019] In some embodiments, when the tuning device is in the second state, the capacitive element of the fifth tuner is connected between the eighth connection point and the reference ground. With such a setting, the resonance frequency of the fourth parasitic radiator can be adjusted, so that the fourth parasitic radiator can further suppress the current on the reference ground.

[0020] In some embodiments, when the tuning device is in the third state, the capacitive element of the fifth tuner is connected between the eighth connection point and the reference ground. With such a setting, the resonance frequency of the fourth parasitic radiator can be adjusted, so that the fourth parasitic radiator can further suppress the current on the reference ground.

[0021] In some embodiments, when the tuning device is in the fourth state, the capacitive element of the fifth tuner is connected between the eighth connection point and the reference ground. With such a setting, the resonance frequency of the fourth parasitic radiator can be adjusted, so that the fourth parasitic radiator can further suppress the current on the reference ground.

[0022] In some embodiments, the tuning device further includes a feeder tuner, which includes a second inductive element, a third inductive element, and a third capacitive element. The third inductive element and the third capacitive element are connected in series, and the third capacitive element is located between the feeding point and the third inductive element. The third inductive element is used to connect to the feed source. One end of the second inductive element is connected between the feeding point and the third capacitive element, and the other end is connected to the reference ground.

[0023] In some embodiments, the main radiator is connected to the second parasitic radiator, and the main radiator and the second parasitic radiator are integrally L-shaped. With such an arrangement, the current regulation effect of the first parasitic radiator and the second parasitic radiator on the reference ground can be better.

[0024] In some embodiments, the first connection point and the fourth connection point are the same connection point, and the first connection point is located at the corner. With such an arrangement, it is beneficial to simplify the structure of the antenna.

[0025] In some embodiments, the second connection point is arranged at the end of the first parasitic radiator close to the first gap, and the third connection point is arranged at the end of the first parasitic radiator far from the first gap. With such an arrangement, the tuning range of the first tuner can be larger.

[0026] In some embodiments, the fifth connection point is arranged at the end of the second parasitic radiator far from the main radiator. With such an arrangement, the tuning range of the second tuner can be larger.

[0027] In a second aspect, an embodiment of the present application provides an electronic device, including a housing and the antenna in the first aspect; the housing includes a bottom wall and a side wall arranged at the edge of the bottom wall. The bottom wall is configured as the reference ground of the antenna, and the radiator of the antenna is located on the side wall.

[0028] The beneficial effects of the electronic device in the embodiments of the present application are the same as those of the antenna in the first aspect, and will not be elaborated here.

[0029] In some embodiments, the housing includes a first housing and a second housing. The first housing and the second housing can be switched between a folded state and an unfolded state. Both the first housing and the second housing include a bottom wall and a side wall; the number of antennas is two, and the two antennas are a WIFI antenna and a satellite antenna respectively. At least part of the WIFI antenna is located at the corner of the top of the first housing, and at least part of the satellite antenna is located at the corner of the top of the second housing. With such an arrangement, the antenna can be prevented from being covered by the hand, thereby ensuring the communication quality of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a simulation schematic diagram of an antenna of an electronic device in the related art;

[0031] Figure 2 is Figure 1 the radiation pattern of the satellite antenna of the electronic device in the state of being held by both hands;

[0032] Figure 3 is Figure 1 the radiation pattern and directivity coefficient of the WIFI antenna of the terminal device in;

[0033] Figure 4a the schematic structural diagram of the electronic device in some embodiments of the present application;

[0034] Figure 4b is Figure 4a the top view of the housing of the electronic device shown;

[0035] Figure 5a the schematic structural diagram of the electronic device in other embodiments of the present application;

[0036] Figure 5b is Figure 5a the top view of the housing of the electronic device shown;

[0037] Figure 6 the schematic structural diagram of the antenna in the first embodiment of the present application;

[0038] Figure 7 the schematic structural diagram of the antenna in the second embodiment of the present application;

[0039] Figure 8a the schematic structural diagram of the antenna in the third embodiment of the present application;

[0040] Figure 8b is Figure 8a the circuit connection diagram of the feeder tuner in the first state in;

[0041] Figure 9 the simulation model diagram of the antenna in the third embodiment of the present application;

[0042] Figure 10a the S-parameter curve of the antenna in the third embodiment of the present application;

[0043] Figure 10b the efficiency curve of the antenna in the third embodiment of the present application;

[0044] Figure 11 the radiation pattern and total directivity coefficient (DirTotal = 3.88 dBi) of the antenna in the third embodiment of the present application under linear polarization;

[0045] Figure 12 the radiation pattern and directivity coefficient (DirLHCP = 1.57 dBi) of the antenna in the third embodiment of the present application under left-handed circular polarization;

[0046] Figure 13 The current distributions on the radiator and the reference ground within one signal (frequency at 2 GHz) cycle for the antenna in the third embodiment of the present application;

[0047] Figure 14 The electric field distributions on the radiator and the reference ground within one signal (frequency at 2 GHz) cycle for the antenna in the third embodiment of the present application;

[0048] Figure 15 The second simulation model diagram of the antenna in the third embodiment of the present application;

[0049] Figure 16a For Figure 15 The S-parameter curve of the antenna in

[0050] Figure 16b For Figure 15 The efficiency curve of the antenna in

[0051] Figure 17 For Figure 15 The radiation pattern and the total directivity coefficient (Dir Total = 4.84 dBi) of the antenna in under linear polarization;

[0052] Figure 18 For Figure 15 The radiation pattern and the directivity coefficient (Dir LHCP = 2.1 dBi) of the antenna in under left-handed circular polarization;

[0053] Figure 19 For Figure 15 The current distributions on the radiator and the reference ground within one signal (frequency at 2 GHz) cycle for the antenna in ;

[0054] Figure 20 For Figure 15 The electric field distributions on the radiator and the reference ground within one signal (frequency at 2 GHz) cycle for the antenna in ;

[0055] Figure 21 The third simulation model diagram of the antenna in the third embodiment of the present application;

[0056] Figure 22a For Figure 21 The S-parameter curve of the antenna in ;

[0057] Figure 22b For Figure 21 The efficiency curve of the antenna in ;

[0058] Figure 23 For Figure 21 The radiation pattern and the total directivity coefficient (Dir Total = 2.79 dBi) of the antenna in under linear polarization;

[0059] Figure 24 The Figure 21 antenna in

[0060] Figure 25 The Figure 21 current distribution on the radiator and the reference ground within one signal (frequency at 2 GHz) cycle of the antenna in

[0061] Figure 26 The Figure 21 electric field distribution on the radiator and the reference ground within one signal (frequency at 2 GHz) cycle of the antenna in

[0062] Figure 27 Schematic diagram of the antenna in the fourth embodiment of the present application;

[0063] Figure 28 The Figure 27 schematic diagram when the tuning device in the antenna shown in Figure 1 ;

[0064] Figure 29 The Figure 28 S-parameter curve and efficiency curve of the antenna in

[0065] Figure 30 The Figure 28 radiation pattern and directivity coefficient of the antenna in

[0066] Figure 31 The Figure 27 schematic diagram when the tuning device in the antenna shown in Figure 2 ;

[0067] Figure 32 The Figure 31 radiation pattern and directivity coefficient of the antenna in

[0068] Figure 33a Schematic diagram of the antenna in the fifth embodiment of the present application;

[0069] Figure 33b The Figure 33a circuit connection diagram of the feeder tuner of the antenna in

[0070] Figure 34 The Figure 33a schematic diagram when the tuning device of the antenna in

[0071] Figure 35 The Figure 34 circuit connection diagram of the feeder tuner of the antenna in

[0072] Figure 36 For Figure 34 the S-parameter curve and efficiency curve of the antenna in

[0073] Figure 37 For Figure 34 the radiation pattern and directivity coefficient of the antenna in

[0074] Figure 38 is a schematic diagram of the antenna in the sixth embodiment of the present application;

[0075] Figure 39 For Figure 38 a schematic diagram of the tuning device of the antenna in

[0076] Figure 40 For Figure 39 the S-parameter curve and efficiency curve of the antenna in

[0077] Figure 41 For Figure 39 the radiation pattern and directivity coefficient of the antenna in

[0078] Figure 42 is a schematic diagram of the antenna in the seventh embodiment of the present application;

[0079] Figure 43 For Figure 42 a schematic diagram of the configuration of the fourth parasitic radiator of the antenna in

[0080] Figure 44 For Figure 43 the radiation pattern of the antenna in

[0081] Figure 45 For Figure 38 a schematic diagram of the tuning device of the antenna in

[0082] Figure 46 For Figure 45 the radiation pattern and directivity coefficient of the antenna shown in

[0083] Figure 47 For Figure 38 a schematic diagram of the tuning device of the antenna in

[0084] Figure 48 For Figure 47 the S-parameter curve and efficiency curve of the antenna in

[0085] Figure 49 For Figure 47 the radiation pattern and directivity coefficient of the antenna in Detailed implementation manners

[0086] Next, the technical solutions in some embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings.

[0087] Figure 1 It is a simulation schematic diagram of an antenna of an electronic device in the related art. As Figure 1 shown, the electronic device is a foldable mobile phone. Figure 1 It shows a schematic diagram of the electronic device in the unfolded state. The electronic device includes a housing 01 and an antenna 02. The housing 01 includes a first housing 011 and a second housing 012. The first housing 011 and the second housing 012 can be switched between the unfolded state ( Figure 1 shown) and the folded state. Both the first housing 011 and the second housing 012 include a housing bottom wall 013 and a housing side wall 014 provided at the edge of the housing bottom wall 013.

[0088] A plurality of slits are provided on the housing side wall 014. A radiator 021 of the antenna 02 is formed between two adjacent slits. The housing bottom wall 013 is configured as a reference ground of the antenna 02. The radiator 021 has a feeding point and a grounding point. Among them, the number of antennas 02 is multiple. Two of the antennas 02 are a WIFI antenna and a satellite antenna respectively. The radiator 021 of the WIFI antenna is arranged at Figure 1 the position of the upper left corner of the first housing 011 in Figure 1 and the radiator 021 of the satellite antenna is arranged at

[0089] Figure 2 For Figure 1 the pattern and directivity coefficient of the satellite antenna of the electronic device in the two-handed holding state. It can be seen from Figure 2 that the pattern of the satellite antenna does not radiate towards the top, but towards the left (the darker area in the figure is the area with the strongest radiation).

[0090] Figure 3 For Figure 1 the pattern and directivity coefficient of the WIFI antenna of the terminal device in Figure 3 It can be seen from

[0091] that the pattern of the WIFI antenna is towards the right, not a uniform overall pattern, and the directivity coefficient is greater than 4.2 dBi.

[0092] To this end, the embodiments of the present application provide an antenna and an electronic device. By respectively arranging a first parasitic radiator and a second parasitic radiator on both sides of the main radiator of the antenna, and both the first parasitic radiator and the second parasitic radiator are connected to a tuner, the first parasitic radiator and the second parasitic radiator can regulate the current on the reference ground of the antenna, thereby realizing the regulation of the antenna pattern to avoid a large deviation of the antenna pattern from the optimal position.

[0093] Figure 4a It is a schematic structural diagram of an electronic device in some embodiments of the present application. Figure 4b is Figure 4a a top view of the housing 300 of the electronic device shown in, as Figure 4a and Figure 4b shown, the electronic device is a foldable mobile phone and includes a display screen 200, a housing 300, and an antenna 100.

[0094] The housing 300 includes a first housing 310 and a second housing 320. A rotating shaft mechanism 500 is provided at the joint of the first housing 310 and the second housing 320. The first housing 310 and the second housing 320 can be switched between a folded state and an unfolded state (as Figure 4a and Figure 4b shown). Both the first housing 310 and the second housing 320 include a bottom wall 330, a side wall 340, and a rear cover 350. The side wall 340 is disposed at the edge of the bottom wall 330 and forms the middle frame of the electronic device with the bottom wall 330. The display screen 200 and the rear cover 350 are respectively located on opposite sides of the middle frame.

[0095] As Figure 4a and Figure 4b shown, the radiator of the antenna 100 is disposed on the side wall 340, and the bottom wall 330 is configured as the reference ground (also referred to as "floor") of the antenna 100.

[0096] In some embodiments, the sidewall 340 includes a metal sidewall 340 and an insulating sidewall 340 located inside the metal sidewall 340. The metal sidewall 340 is provided with a plurality of slits along the circumferential direction of the bottom wall 330. A radiator of the antenna 100 is formed between two adjacent slits. The radiator of the antenna 100 is disposed on the insulating sidewall 340. Among them, the material of the metal sidewall 340 can be aluminum, stainless steel, aluminum alloy, titanium alloy, magnesium alloy, etc. The material of the insulating frame can be plastic, and the plastic can be a PPS (Polyphenylenesulfide) frame, a PBT (polybutylene terephthalate) frame, a PPSU (Polyphenylene sulfone resins) frame, a PEEK (polyether-ether-ketone) frame, etc.

[0097] In some embodiments, the metal sidewall and the bottom wall 330 of the housing 300 can be an integral structure. However, it is not limited thereto, and the metal sidewall 340 and the bottom wall 330 of the housing 300 can also be separately provided.

[0098] In some embodiments, as Figure 4b shown, the number of antennas 100 is two. The two antennas 100 are a WIFI antenna and a satellite antenna respectively. The WIFI antenna is at least partially located at a corner of the top of the first housing 310, and the satellite antenna is at least partially located at a corner of the top of the second housing 320. With such an arrangement, when the user holds the electronic device with both hands or one hand, the antenna 100 can be prevented from being covered, thereby ensuring the communication quality of the antenna 100.

[0099] Of course, in addition to being disposed at the corner of the top of the first housing 310, the WIFI antenna can also be disposed at other positions on the top of the first housing 310, or at the side position of the first housing 310, which is not specifically limited herein; in addition to being disposed at the corner of the top of the second housing 320, the satellite antenna can also be disposed at other positions on the top of the second housing 320, which is not specifically limited herein. Among them, the satellite antenna includes but is not limited to a GPS antenna and a satellite communication antenna.

[0100] In addition to being a foldable mobile phone, the electronic device in the embodiments of the present application can also be a tablet computer, specifically as Figure 5a 、 Figure 5b shown, Figure 5a is a schematic structural diagram of an electronic device in some other embodiments of the present application, Figure 5b is Figure 5aTop view of the housing 300 of the electronic device shown. The housing 300 includes a bottom wall 330, side walls 340, and a rear cover 350. The side walls 340 are disposed at the edges of the bottom wall 330 and form the middle frame of the electronic device together with the bottom wall 330. The display screen 200 and the rear cover 350 are respectively located on opposite sides of the middle frame. The rear cover 350 and the middle frame enclose a receiving space for accommodating components such as a main board and a battery.

[0101] In some embodiments, as Figure 5b shown, the number of antennas 100 is two. The two antennas 100 are a WIFI antenna and a satellite antenna respectively. At least a part of the WIFI antenna is located at a corner at the top of the housing 300, and at least a part of the satellite antenna is located at another corner at the top of the housing 300. With such an arrangement, when the user holds the electronic device with both hands or one hand, it is possible to avoid covering the radiators of the antennas 100, thereby ensuring the communication quality of the antennas 100. In addition to being arranged at the corners at the top of the housing 300, the WIFI antenna and the satellite antenna can also be arranged at other positions at the top of the housing 300, and the WIFI antenna can also be arranged at the side position of the housing 300.

[0102] Figure 6 Structural schematic diagram of the antenna 100 in the first embodiment of the present application. As Figure 6 shown, the radiator and the tuning device 4 of the antenna 100. The radiator includes a main radiator 1, a first parasitic radiator 2, and a second parasitic radiator 3. The main radiator 1 is disposed between the first parasitic radiator 2 and the second parasitic radiator 3. There is a first gap 7 between the first parasitic radiator 2 and the main radiator 1. The main radiator 1 has a feeding point P0 and a first connection point P1. The feeding point P0 is used to connect to the feed source 400, and the first connection point P1 is connected to the reference ground; the first parasitic radiator 2 has a second connection point P2 and a third connection point P3, and the second connection point P2 is connected to the reference ground; the second parasitic radiator 3 has a fourth connection point P4 and a fifth connection point P5, and the fourth connection point P4 is connected to the reference ground.

[0103] The tuning device 4 includes a first tuner 41 and a second tuner 42. The first tuner 41 is connected between the third connection point P3 and the reference ground, and the second tuner 42 is connected between the fifth connection point P5 and the reference ground. Among them, both the first tuner 41 and the second tuner 42 include tuning switches and matching elements; among them, the matching elements include but are not limited to 0 ohm resistors, inductive elements, capacitive elements, etc.

[0104] By arranging a first parasitic radiator 2 and a second parasitic radiator 3 on both sides of the main radiator 1, and connecting the first parasitic radiator 2 to a first tuner 41 and the second parasitic radiator 3 to a second tuner 42, according to the characteristics of different communication functions (such as satellite communication, WiFi communication), the tuning device 4 can load different configurations for the first parasitic radiator 2 and the second parasitic radiator 3, so that at least one of the first parasitic radiator 2 and the second parasitic radiator 3 can regulate the magnitude distribution of the current on the reference ground, thereby enabling the regulation of the radiation pattern of the antenna 100, which is beneficial to improving the user experience.

[0105] Taking a satellite antenna as an example, the regulation of the radiation pattern in the scenario of satellite communication will be specifically described below. The regulation of the radiation pattern for the scenario of satellite communication is to adjust the radiation pattern to the optimal position towards the zenith direction.

[0106] In some embodiments, as Figure 7 shown, Figure 7 is a schematic structural diagram of the antenna 100 in the second embodiment of the present application. The tuning device 4 further includes a third tuner 43, and the third tuner 43 is connected between the second connection point P2 and the reference ground. By setting the third tuner 43, more matching can be loaded for the first parasitic radiator 2 to adjust the resonant frequency of the first parasitic radiator 2, so that the antenna 100 can better meet the communication requirements of different communication functions.

[0107] Among them, the third tuner 43 includes a tuning switch and a matching element; among them, the matching element includes but is not limited to a 0-ohm resistor, an inductive element, a capacitive element, etc.

[0108] In some embodiments, as Figure 7 shown, the tuning device 4 has a first state. When the tuning device 4 is in the first state, the resonant frequencies of both the first parasitic radiator 2 and the second parasitic radiator 3 are less than the resonant frequency of the main radiator 1. With such a setting, both the first parasitic radiator 2 and the second parasitic radiator 3 can regulate the magnitude distribution of the current on the reference ground to suppress the current flowing from the reference ground to outside the region where the radiator is located (i.e., Figure 7 the left end of the first parasitic radiator 2 and the lower end of the second parasitic radiator 3 in the figure), thereby better regulating the radiation pattern of the antenna 100 and making the radiation pattern of the antenna 100 closer to the optimal position.

[0109] In some embodiments, as Figure 7As shown, when the tuning device 4 is in the first state, the inductive element of the first tuner 41 is connected between the third connection point P3 and the reference ground, and the capacitive element of the second tuner 42 is connected between the fifth connection point P5 and the reference ground; the 0-ohm resistor of the third tuner 43 is connected between the second connection point P2 and the reference ground. With such a setting, the resonant frequencies of the first parasitic radiator 2 and the second parasitic radiator 3 can be better adjusted, so that the first parasitic radiator 2 and the second parasitic radiator 3 can better control the magnitude distribution of the current on the reference ground.

[0110] Among them, as Figure 7 shown, when the tuning device 4 is in the first state, the inductance value of the inductive element of the first tuner 41 is 8.2 nH, and the capacitance value of the capacitive element of the second tuner 42 is 1.2 pF. However, this is not limited thereto, and the inductance value of the inductive element of the first tuner 41 and the capacitance value of the capacitive element of the second tuner 42 can also be set to other values according to the actual situation.

[0111] In some embodiments, as Figure 6 and Figure 7 shown, the main radiator 1 is connected to the second parasitic radiator 3, and the main radiator 1 and the second parasitic radiator 3 are integrally L-shaped. Among them, the main radiator 1 and the second parasitic radiator 3 are arranged at the corner of the housing 300, the main radiator 1 and the first parasitic radiator 2 are both arranged at the first edge 331 of the bottom wall 330, and the first edge 331 extends along the transverse direction X; the second parasitic radiator 3 is arranged at the second edge 332 of the bottom wall 330, and the second edge 332 extends along the longitudinal direction Y.

[0112] With such a setting, the first parasitic radiator 2 can control the magnitude of the current along the transverse direction X on the reference ground to suppress the current flowing from the reference ground along the transverse direction X to the area outside the radiator (the left side in the figure); the second parasitic radiator 3 can control the magnitude of the current along the longitudinal direction Y on the reference ground to suppress the current flowing from the reference ground along the longitudinal direction Y to the area outside the radiator (the lower side in the figure), so as to reduce the current flowing from the reference ground to the area outside the radiator; by controlling the current on the reference ground in two directions, the control effect of the first parasitic radiator 2 and the second parasitic radiator 3 on the current on the reference ground can be better, so that the radiation pattern of the antenna 100 is closer to the optimal position.

[0113] In some embodiments, as Figure 6 and Figure 7As shown, the second parasitic radiator 3 and the main radiator 1 are of an integral structure. With this arrangement, there is no need to provide a gap between the second parasitic radiator 3 and the main radiator 1, reducing the number of gaps provided on the housing 300 of the electronic device, thus facilitating the manufacture of the housing 300 of the electronic device. At the same time, since the second parasitic radiator 3 and the main radiator 1 are of an integral structure, the second parasitic radiator 3 is closer to the feeding point P0 on the main radiator 1, so that the current mode excitation degree of the second parasitic radiator 3 is better.

[0114] In some embodiments, as Figure 6 and Figure 7 shown, the first connection point P1 and the fourth connection point P4 are the same connection point, and the first connection point P1 is located at the corner. With this arrangement, the main radiator 1 and the second parasitic radiator 3 share a connection point, thus reducing the number of connection points provided on the radiator and facilitating the simplification of the structure of the antenna 100.

[0115] In some embodiments, as Figure 6 and Figure 7 shown, the second connection point P2 is provided at the end of the first parasitic radiator 2 close to the first gap 7, and the third connection point P3 is provided at the end of the first parasitic radiator 2 away from the first gap 7. With this arrangement, the third connection point P3 connecting the first tuning device 4 is located at the end of the first parasitic radiator 2 away from the feeding point P0, so that the tuning range of the first tuner 41 can be larger, which is beneficial to enabling the antenna 100 to better meet the communication requirements of different communication functions.

[0116] In some embodiments, as Figure 6 and Figure 7 shown, the fifth connection point P5 is provided at the end of the second parasitic radiator 3 away from the main radiator 1. With this arrangement, the fifth connection point P5 connecting the second tuning device 4 is located at the end of the second parasitic radiator 3 away from the feeding point P0, so that the tuning range of the second tuner 42 can be larger, which is beneficial to enabling the antenna 100 to better meet the communication requirements of different communication functions.

[0117] Among them, at the ends of the above-mentioned first parasitic radiator 2, second parasitic radiator 3 and main radiator 1, it can be any position on the end face or a position close to the end face, such as within 3 mm.

[0118] Of course, the second connection point P2, the third connection point P3 and the fifth connection point P5 are not limited to be provided at Figure 6 , Figure 7The positions shown can also be set at other positions. For example, the second connection point P2 and the third connection point P3 are set at the middle position of the first parasitic radiator 2 (the position excluding the two ends), and the fifth connection point P5 is set at the middle position of the second parasitic radiator 3 (the position excluding the two ends).

[0119] In some embodiments, as Figure 8a shown Figure 8a is a schematic structural diagram of the antenna 100 in the third embodiment of the present application. The tuning device 4 further includes a feeder tuner 40, and the feeder tuner 40 is connected to the feeding point P0. By setting the feeder tuner 40, the feeder tuner 40 can adjust the impedance matching of the antenna 100 and the resonance frequency of the main radiator 1 by loading different configurations to the main radiator 1, so that the antenna 100 can meet the communication requirements of different communication functions.

[0120] In some embodiments, as Figure 8b shown Figure 8b is Figure 8a a circuit connection diagram of the feeder tuner 40 in the first state in. The feeder tuner 40 includes a first inductance element L1 and a first capacitance element C1. When the tuning device 4 is in the first state, the first electrode of the first capacitance element C1 is connected to the feeding point P0, and the second electrode of the first capacitance element C1 is used to connect to the feed source 400; one end of the first inductance element L1 is connected between the feeding point P0 and the first electrode, and the other end is connected to the reference ground. By setting the first inductance element L1 and the first capacitance element C1, the impedance matching of the antenna 100 and the resonance frequency of the main radiator 1 can be better adjusted, so that the antenna 100 can better meet the communication requirements of different communication functions.

[0121] Wherein, when the tuning device 4 is in the first state, the inductance value of the first inductance element L1 is 9.1 nH, and the capacitance value of the first capacitance element C1 is 1 pF, but it is not limited thereto. The inductance value of the first inductance element L1 and the capacitance value of the first capacitance element C1 can also be set to other values according to actual situations.

[0122] Next, the technical effects in the first state of the tuning device 4 in the embodiments of the present application and the principle of achieving the technical effects will be specifically described.

[0123] Figure 9 is a simulation model diagram of the antenna 100 in the third embodiment of the present application. As Figure 9As shown, the main parameters of the simulation model are as follows: the length of the main radiator 1 is 19.5 mm, the length of the first parasitic radiator 2 is 30.5 mm, an inductor of 8.2 nH is loaded at the third connection point P3 of the first parasitic radiator 2, a 0-ohm resistor is loaded at the second connection point P2 of the first parasitic radiator 2, the length of the second parasitic radiator 3 is 11 mm, the fourth connection point P4 of the second parasitic radiator 3 is grounded, and a capacitor of 1.2 pF is loaded at the fifth connection point P5 of the second parasitic radiator 3.

[0124] Figure 10a This is the S-parameter curve of the antenna 100 in the third embodiment of the present application. Figure 10b This is the efficiency curve of the antenna 100 in the third embodiment of the present application. It can be seen from Figure 10a that there are two relatively obvious resonances in the S-parameter curve. The resonance at 2 GHz is the resonance mode of the main radiator 1. The resonances of the first parasitic radiator 2 and the second parasitic radiator 3 cannot be distinguished on the S-parameter curve and are both near the resonance at 1.92 GHz. It can be seen from Figure 10b the efficiency curve that the antenna 100 has a relatively high efficiency around 2 GHz.

[0125] Figure 11 This is the radiation pattern and the total directivity coefficient (DirTotal = 3.88 dBi) of the antenna 100 in the third embodiment of the present application under linear polarization. Figure 12 This is the radiation pattern and the directivity coefficient (Dir LHCP = 1.57 dBi) of the antenna 100 in the third embodiment of the present application under left-handed circular polarization. It can be seen from Figure 11 and Figure 12 that in the case of holding the electronic device with both hands, the radiation pattern of the antenna 100 in the entire upward direction is relatively strong (the darker the color, the stronger the gain). Whether it is the front view or the side view radiation pattern, it is relatively strong. Comparing with the radiation pattern of the antenna in the related art, the antenna 100 in the embodiment of the present application has an obvious effect of improving the radiation pattern.

[0126] The radiation pattern of the antenna 100 is the result of the superposition of the currents on the radiator and the currents on the reference ground in the far-field radiation. The principle of achieving the above effect is explained from the perspectives of current and electric field as follows:

[0127] Figure 13 This is the current distribution on the radiator and the reference ground within one signal (frequency at 2 GHz) cycle of the antenna 100 in the third embodiment of the present application. It can be seen from Figure 13 that the currents on the main radiator 1, the first parasitic radiator 2, and the second parasitic radiator 3 are all relatively strong, and the currents on the reference ground around the radiator are relatively weak. The currents on the reference ground are restricted near the area where the radiator is located, and the currents on the left side of the reference ground are less, so the distortion of the radiation pattern is less.

[0128] During a signal cycle, the current of the first parasitic radiator 2 flows in the same direction as the current of the main radiator 1; the current of the second parasitic radiator 3 flows in the same direction as the current of the main radiator 1 in half a cycle and in the opposite direction in the other half cycle. It can be seen that the current on the radiator is not a pure co-directional mode or anti-directional mode because the mode of the second parasitic radiator 3 is relatively close to the main mode of the main radiator 1.

[0129] Figure 14 This is the electric field distribution on the radiator and the reference ground of the antenna 100 in the third embodiment of the present application within a signal (frequency at 2 GHz) cycle. From Figure 14 it can be seen that the electric field is confined near the radiator throughout the signal cycle, and the electric field of the left reference ground is not obvious, having little influence on the radiation pattern.

[0130] To better illustrate the functions of the first parasitic radiator 2 and the second parasitic radiator 3, the first parasitic radiator 2 and the second parasitic radiator 3 are short-circuited respectively below, and their effects are observed from the comparison of the radiation pattern and the current and electric field.

[0131] Figure 15 This is the second simulation model diagram of the antenna 100 in the third embodiment of the present application. Figure 15 The main difference between the shown simulation model diagram and the Figure 9 simulation model diagram is that: a 0-ohm resistor is loaded at the third connection point P3 of the first parasitic radiator 2, thus equivalently short-circuiting the first parasitic radiator 2.

[0132] Figure 16a This is Figure 15 the S-parameter curve of the antenna 100 in Figure 16b This is Figure 15 the efficiency curve of the antenna 100 in Figure 16a It can be seen from Figure 16b that there are two relatively obvious resonances in the S-parameter curve. Among them, the resonance of the second parasitic radiator 3 is near 1.9 GHz, and the resonance at 2 GHz is the resonance mode of the main radiator 1. It can be seen from

[0133] Figure 17 This is Figure 15 the radiation pattern and the total directivity coefficient (Dir Total = 4.84 dBi) of the antenna 100 in Figure 18 This is Figure 15 the radiation pattern and the directivity coefficient (Dir LHCP = 2.1 dBi) of the antenna 100 in Figure 17 and Figure 18It can be seen that after short - circuiting the first parasitic radiator 2, the pattern changes significantly when held by both hands. The entire pattern deflects to the left, a concave point appears directly above, and the radiation towards the top significantly decreases. Compared with Figure 11 and Figure 12 , it can be seen that the first parasitic radiator 2 can significantly suppress the deflection of the pattern to the left.

[0134] Figure 19 Figure Figure 15 shows the current distribution on the radiator and the reference ground of the antenna 100 within one signal (frequency at 2 GHz) cycle. Figure 20 Figure Figure 15 shows the electric - field distribution on the radiator and the reference ground of the antenna 100 within one signal (frequency at 2 GHz) cycle. It can be seen from Figure 19 that the current on the main radiator 1 and the second parasitic radiator 3 is relatively strong, and the current on the reference ground is slightly weaker; it can be seen from Figure 20 that within one signal cycle, because the effect of the first parasitic radiator 2 is absent, the electric field on the left side of the reference ground is relatively strong and cannot be suppressed within the area where the radiator is located, so the pattern of the antenna 100 deflects severely to the left.

[0135] To illustrate the effect of the second parasitic radiator 3, the second parasitic radiator 3 is short - circuited below, and its effect is examined through the comparison of the pattern and the current and electric field.

[0136] Figure 21 This is the third simulation model diagram of the antenna 100 in the third embodiment of the present application. Figure 21 The main difference between the shown simulation model diagram and the simulation model diagram in Figure 9 is that: a 0 - ohm resistor is loaded at the fifth connection point P5 of the second parasitic radiator 3, thus equivalently short - circuiting the second parasitic radiator 3.

[0137] Figure 22a Figure Figure 21 shows the S - parameter curve of the antenna 100. Figure 22b Figure Figure 21 shows the efficiency curve of the antenna 100. It can be seen from Figure 22a that two resonances can be seen in the S - parameter curve. The lower resonance is that of the first parasitic radiator 2, and the higher resonance is the resonance mode of the main radiator 1. It can be seen from the efficiency curve in Figure 22b that the antenna 100 has a relatively high efficiency at around 2 GHz.

[0138] Figure 23 Figure Figure 21 shows the pattern and the total directivity coefficient (Dir Total = 2.79 dBi) of the antenna 100 under linear polarization. Figure 24 Figure Figure 21The radiation pattern and directivity coefficient (Dir LHCP = 1.05 dBi) of the antenna 100 under left-hand circular polarization. From Figure 23 and Figure 24 it can be seen that due to the presence of the first parasitic radiator 2, the radiation pattern towards the top is relatively full, but compared with Figure 11 and Figure 12 , it can be seen that the radiation towards the bottom becomes stronger. It can also be seen from the directivity coefficient that after removing the second parasitic radiator 3, both the total directivity and the directivity coefficient of circular polarization decrease by 0.5 - 1 dB, indicating that the energy radiated downward diverts part of the radiation upward.

[0139] Figure 25 is Figure 21 the current distribution on the radiator and the reference ground within one period of a signal (frequency at 2 GHz) of the antenna 100 in Figure 26 is Figure 21 the electric field distribution on the radiator and the reference ground within one period of a signal (frequency at 2 GHz) of the antenna 100 in Figure 25 and Figure 26 it is easier to see the role of the second parasitic radiator 3. As Figure 26 shown, it can be seen from the figure that the electric field towards the bottom is enhanced. If the electric field below is enhanced, the radiation towards the bottom will increase, thereby reducing the radiation upward.

[0140] In some embodiments, as Figure 27 shown, Figure 27 is a schematic diagram of the antenna 100 in the fourth embodiment of the present application. The radiator of the antenna 100 further includes a third parasitic radiator 5, and the third parasitic radiator 5 is located on the side of the first parasitic radiator 2 away from the first gap 7; the third parasitic radiator 5 has a sixth connection point P6 and a seventh connection point P7, and the sixth connection point P6 is connected to the reference ground; the tuning device 4 further includes a fourth tuner 44, and the fourth tuner 44 is connected between the seventh connection point P7 and the reference ground.

[0141] By setting the third parasitic radiator 5 and the fourth tuner 44, the fourth tuner 44 can load more matching to the third parasitic radiator 5 to adjust the resonant frequency of the third parasitic radiator 5, so that the third parasitic radiator 5 can further regulate the current on the reference ground to suppress the current on the reference ground along the transverse X direction flowing outside the region where the radiator is located ( Figure 27 the left end of the third parasitic radiator 5 in

[0142] Among them, the fourth tuner 44 includes a tuning switch and a matching element; the matching element includes, but is not limited to, a 0-ohm resistor, an inductance element, a capacitance element, etc.

[0143] Figure 28 For Figure 27 Schematic diagram of the tuning device 4 in the antenna 100 shown in the figure being in the first state Figure 1 , such as Figure 28 shown, when the tuning device 4 is in the first state, the inductance element of the first tuner 41 is connected between the third connection point P3 and the reference ground, the capacitance element of the second tuner 42 is connected between the fifth connection point P5 and the reference ground, and the capacitance element of the third tuner 43 is connected between the second connection point P2 and the reference ground. That is, both the first parasitic radiator 2 and the second parasitic radiator 3 are grounded through capacitors. Since grounding through capacitors can adjust the resonance frequency, with such a setting, the resonance frequencies of the first parasitic radiator 2 and the second parasitic radiator 3 can be better adjusted, enabling the first parasitic radiator 2 and the second parasitic radiator 3 to better regulate the magnitude distribution of the current on the reference ground.

[0144] In some embodiments, such as Figure 28 shown, when the tuning device 4 is in the first state, the capacitance element of the fourth tuner 44 is connected between the seventh connection point P7 and the reference ground. With such a setting, the resonance frequency of the third parasitic radiator 5 can be better adjusted, so that the third parasitic radiator 5 can better suppress the current flowing along the first edge on the reference ground towards the far end.

[0145] Among them, when the tuning device 4 is in the first state, the resonance frequency of the third parasitic radiator 5 can be near the resonance frequency of the main radiator 1. For example, the resonance frequencies of the two can differ by 100 - 200 MHz. In this way, the third parasitic radiator 5 can better suppress the current flowing along the transverse X on the reference ground outside the region where the radiator is located.

[0146] It should be noted that: because the new resonance of the third parasitic radiator 5 will have a radiation efficiency pit, if it is too close to the resonance frequency of the main radiator 1, it will affect the radiation efficiency of the main radiator 1. However, from the effect of suppressing the current on the reference ground, the closer it is to the resonance frequency of the main radiator 1, the better the effect of suppressing the current on the reference ground. Therefore, generally considering the radiation efficiency and the current suppression effect comprehensively, the difference in the resonance frequencies of the two is generally about 100 - 200 MHz.

[0147] In some embodiments, such as Figure 28As shown, when the tuning device 4 is in the first state, the inductance value of the inductance element of the first tuner 41 is 5.6nH, the capacitance value of the capacitance element of the second tuner 42 is 1.2pF, the capacitance value of the capacitance element of the third tuner 43 is 4.7pF, and the capacitance value of the capacitance element of the fourth tuner 44 is 1pF. However, it is not limited thereto, and the inductance value of the inductance element of the first tuner 41, the capacitance value of the capacitance element of the second tuner 42, the capacitance value of the capacitance element of the third tuner 43, and the capacitance value of the capacitance element of the fourth tuner 44 can also be set to other values ​​according to actual conditions.

[0148] Figure 29 for Figure 28 The S parameter curve and efficiency curve of the antenna 100 are shown in FIG. Figure 29 It can be seen that the main radiator 1, the first parasitic radiator 2, and the second parasitic radiator 3 are not clearly distinguished. In addition, the third parasitic radiator 5 is far away from the main radiator 1 and has a weaker coupling. Figure 29 The resonant mode is not easily seen in the S parameter curve. Below, different configurations can be loaded to the third parasitic radiator 5 through the fourth tuner 44, and the effect of adjusting the third parasitic radiator 5 to a suitable resonant frequency can be seen.

[0149] Figure 30 for Figure 28 The directional pattern and directivity coefficient of the antenna 100 in, Figure 31 for Figure 27 The tuning device 4 in the antenna 100 is shown in a first state. Figure 2 , Figure 31 The antenna 100 and Figure 28 The difference between the antenna 100 in FIG. 1 and FIG. 2 is that the capacitance value of the capacitance element of the fourth tuner 44 is different. Figure 28 The capacitance value of the capacitance element of the fourth tuner 44 is 1 pF, Figure 31 The capacitance value of the capacitance element of the fourth tuner 44 is 0.5 pF; Figure 32 for Figure 31 The directional pattern and directivity coefficient of the antenna 100 in FIG. Figure 32 It can be seen that the direction diagram of the third parasitic radiator 5 loaded with a 0.5pF capacitor is obviously more deflected to the left. Figure 30 It can be seen that the directivity of the third parasitic radiator 5 is more deflected upward and to the right when a 1pF capacitor is added to the third parasitic radiator 5. Therefore, the fourth tuner 44 can adjust the directivity of the antenna 100 by adding capacitor elements of different capacitance values ​​to the third parasitic radiator 5.

[0150] Figure 33a is a schematic diagram of an antenna 100 in a fifth embodiment of the present application, Figure 33b for Figure 33aCircuit connection diagram of the feeder tuner 40 of the antenna 100 in the first state. The feeder tuner 40 includes a first inductance element L1, a first capacitance element C1, and a second capacitance element C2. When the tuning device 4 is in the first state, the first electrode of the first capacitance element C1 is connected to the feeding point P0, and the second electrode of the first capacitance element C1 is used to connect to the feed source 400; one end of the first inductance element L1 is connected between the feeding point P0 and the first electrode, and the other end is connected to the reference ground, and the second capacitance element C2 is connected between the second electrode and the reference ground. By setting the first inductance element L1, the first capacitance element C1, and the second capacitance element C2, the impedance matching of the antenna 100 and the resonance frequency of the main radiator 1 can be better adjusted, so that the antenna 100 can better meet the communication requirements of different communication functions.

[0151] Among them, when the tuning device 4 is in the first state, the inductance value of the first inductance element L1 is 18 nH, the capacitance value of the first capacitance element C1 is 0.75 pF, and the capacitance value of the second capacitance element C2 is 1 pF; but it is not limited to this, the inductance value of the first inductance element L1, the capacitance value of the first capacitance element C1, and the capacitance value of the second capacitance element C2 can also be set to other values according to the actual situation.

[0152] In some embodiments, such as Figure 34 shown, Figure 34 is Figure 33a Schematic diagram of the tuning device 4 of the antenna 100 in the second state in. The tuning device 4 has a second state. When the tuning device 4 is in the second state, the resonance frequency of the first parasitic radiator 2 is greater than the resonance frequency of the main radiator 1, and the resonance frequency of the second parasitic radiator 3 is less than the resonance frequency of the main radiator 1. By adjusting the resonance frequency of the first parasitic radiator 2 to be behind the resonance frequency of the main radiator 1, the first parasitic radiator 2 can improve the antenna efficiency. At this time, the third parasitic radiator 5 and the second parasitic radiator 3 are used to control the current on the reference ground and the radiation pattern.

[0153] In some embodiments, such as Figure 34 shown, when the tuning device 4 is in the second state, the inductance element and the capacitance element of the third tuner 43 are connected in parallel and connected between the third connection point P3 and the reference ground, the first tuner 41 is in an open circuit state, and the capacitance element of the second tuner 42 is connected between the fifth connection point P5 and the reference ground. With such a setting, the resonance frequencies of the first parasitic radiator 2 and the second parasitic radiator 3 can be better adjusted, which is beneficial for the first parasitic radiator 2 to improve the antenna efficiency, and beneficial for the second parasitic radiator 3 to better control the magnitude distribution of the current on the reference ground.

[0154] In some embodiments, such as Figure 34As shown, when the tuning device 4 is in the second state, the capacitive element of the fourth tuner 44 is connected between the seventh connection point P7 and the reference ground. With such a setting, the resonant frequency of the third parasitic radiator 5 can be better adjusted, so that the third parasitic radiator 5 can better suppress the current flowing along the transverse X direction on the reference ground outside the region where the radiator is located.

[0155] Among them, as Figure 34 shown, when the tuning device 4 is in the second state, the capacitance value of the capacitive element of the third tuner 43 is 1 pF, the inductance value of the inductive element of the third tuner 43 is 5.6 nH, the capacitance value of the capacitive element of the second tuner 42 is 1.2 pF, and the capacitance value of the capacitive element of the fourth tuner 44 is 0.4 pF.

[0156] In some embodiments, as Figure 35 shown, Figure 35 is Figure 34 the circuit connection diagram of the feeder tuner 40 of the antenna 100 in the second state in

[0157] Among them, when the tuning device 4 is in the first state, the inductance value of the second inductive element L2 is 27 nH, the capacitance value of the third capacitive element C3 is 0.5 pF, and the inductance value of the third inductive element L3 is 1.5 nH; however, it is not limited to this, and the inductance value of the second inductive element L2, the capacitance value of the third capacitive element C3, and the inductance value of the third inductive element L3 can also be set to other values according to the actual situation.

[0158] Figure 36 is Figure 34 the S-parameter curve and efficiency curve of the antenna 100 in Figure 37 is Figure 34 the radiation pattern and directivity coefficient of the antenna 100 in Figure 36 From the S-parameter curve of Figure 37It can be seen that when held by both hands, the overall radiation pattern of the antenna 100 still faces upward, achieving a good effect.

[0159] The above embodiments are for the antenna 100 pattern adjustment in the scenario of satellite communication. Next, the pattern adjustment of the antenna 100 for the WIFI communication scenario will be specifically introduced. The pattern adjustment for the WIFI communication scenario is to reduce the directivity coefficient and make the pattern more uniform, rather than concentrating the pattern more towards a certain direction.

[0160] Figure 38 Schematic diagram of the antenna 100 in the sixth embodiment of the present application. Figure 39 is Figure 38 Schematic diagram of the tuning device 4 of the antenna 100 in the third state. As Figure 38 and Figure 39 shown, the tuning device 4 has a third state. When the tuning device 4 is in the third state, the 0-ohm resistor of the second tuner 42 is connected between the fifth connection point P5 and the connector. The resonant frequency of the first parasitic radiator 2 is less than the resonant frequency of the main radiator 1, and the resonant frequency of the third parasitic radiator 5 is greater than the resonant frequency of the main radiator 1.

[0161] By making the resonant frequency of the first parasitic radiator 2 less than the resonant frequency of the main radiator 1, the third parasitic radiator 5 can suppress the current along the transverse X on the reference ground, thereby regulating the pattern and making the pattern uniform. By making the resonant frequency of the third parasitic radiator 5 greater than the resonant frequency of the main radiator 1, the antenna efficiency can be improved.

[0162] In some embodiments, as Figure 39 shown, when the tuning device 4 is in the third state, the inductance element of the first tuner 41 is connected between the third connection point P3 and the reference ground, the 0-ohm resistor of the third tuner 43 is connected between the second connection point P2 and the reference ground, and the inductance element of the fourth tuner 44 is connected between the seventh connection point P7 and the reference ground. With such a setting, the resonant frequencies of the first parasitic radiator 2 and the third parasitic radiator 5 can be better adjusted, which is beneficial to better suppressing the current flowing outside the radiator area along the transverse X on the reference ground (the current flowing to the right in the figure), and improving the antenna efficiency.

[0163] Among them, as Figure 39 shown, when the tuning device 4 is in the third state, the inductance value of the inductance element of the first tuner 41 is 1.2 nH, and the inductance value of the inductance element of the fourth tuner 44 is 10 nH; but it is not limited to this. The inductance values of the inductance elements of the first tuner 41 and the fourth tuner 44 can also be set to other values according to the actual situation.

[0164] In some embodiments, the tuning device 4 further includes a feeder tuner 40. The feeder tuner 40 includes a second inductance element L2, a third inductance element L3, and a third capacitance element C3. The third inductance element L3 and the third capacitance element C3 are connected in series, and the third capacitance element C3 is located between the feeding point P0 and the third inductance element L3. The third inductance element L3 is used to connect to the feed source 400. One end of the second inductance element L2 is connected between the feeding point P0 and the third capacitance element C3, and the other end is connected to the reference ground. For details, reference can be made to Figure 35 the feeder tuner 40 in

[0165] Wherein, when the tuning device 4 is in the third state, the inductance value of the second inductance element L2 is 39 nH, the capacitance value of the third capacitance element C3 is 0.3 pF, and the inductance value of the third inductance element L3 is 16 nH. However, this is not limited thereto, and the inductance value of the second inductance element L2, the capacitance value of the third capacitance element C3, and the inductance value of the third inductance element L3 can also be set to other values according to actual situations.

[0166] Figure 40 For Figure 39 the S-parameter curves and efficiency curves of the antenna 100 in Figure 41 For Figure 39 the radiation pattern and directivity coefficient of the antenna 100 in Figure 40 It can be seen that the resonance frequency of the main radiator 1 is near 2.45 GHz, the resonance frequency of the first parasitic radiator 2 is near 2.3 GHz, and the resonance frequency of the third parasitic radiator 5 is near 2.7 GHz. The second parasitic radiator 3 is equivalently short-circuited due to being grounded at 0 ohm. From Figure 41 it can be seen that the radiation pattern partially concentrated on the right side is concentrated on the left side, so as to achieve a relatively uniform effect, and the directivity coefficient within the overall band is less than 3.79 dBi.

[0167] In some embodiments, as Figure 42 shown, Figure 42 This is a schematic diagram of the antenna 100 in the seventh embodiment of the present application. The radiator of the antenna 100 further includes a fourth parasitic radiator 6. The fourth parasitic radiator 6 is connected to the third parasitic radiator 5, and at least part of the fourth parasitic radiator 6 is located on the side of the third parasitic radiator 5 away from the first parasitic radiator 2. The fourth parasitic radiator 6 has an eighth connection point P8. The sixth connection point P6 is located between the seventh connection point P7 and the eighth connection point P8, and the seventh connection point P7 is located between the sixth connection point P6 and the first parasitic radiator 2. The tuning device 4 further includes a fifth tuner 45. The fifth tuner 45 is connected between the eighth connection point P8 and the reference ground.

[0168] By setting the fourth parasitic radiator 6 and the fifth tuner 45, different configurations are loaded onto the second sub-radiator through the fifth tuner 45, and the fourth parasitic radiator 6 can further suppress the current on the reference ground, thereby regulating the radiation pattern of the antenna 100 to make the radiation pattern of the antenna 100 more uniform.

[0169] Among them, as Figure 42 shown, both the third parasitic radiator 5 and the fourth parasitic radiator 6 include a horizontal branch and a vertical branch. The horizontal branch and the vertical branch are integrally L-shaped, and the third parasitic radiator 5 and the fourth parasitic radiator 6 share the vertical branch. Among them, the fifth tuner 45 includes a tuning switch and a matching element; among them, the matching element includes but is not limited to a 0-ohm resistor, an inductive element, a capacitive element, etc.

[0170] In some embodiments, as Figure 43 shown, Figure 43 is Figure 42 a schematic diagram of the configuration loaded by the fourth parasitic radiator 6 of the antenna 100 in the third state of the tuning device 4. When the tuning device 4 is in the third state, the capacitive element of the fifth tuner 45 is connected between the eighth connection point P8 and the reference ground. With such a setting, the fourth parasitic radiator 6 can be grounded through the capacitor, so that the resonant frequency of the fourth parasitic radiator 6 can be adjusted, thereby enabling the fourth parasitic radiator 6 to further suppress the current on the reference ground, thereby regulating the radiation pattern of the antenna 100 to make the radiation pattern of the antenna 100 more uniform.

[0171] Among them, as Figure 43 and Figure 44 shown, Figure 44 is Figure 43 the radiation pattern of the antenna 100 in. When the tuning device 4 is in the third state, the capacitance value of the capacitive element of the fifth tuner 45 is 0.6 pF, so that the resonant frequency of the fourth parasitic radiator 6 can be adjusted to the vicinity of the WIFI frequency band (2.4 GHz - 2.5 GHz) to further reduce the directivity coefficient of the antenna 100 to 3.64 dBi.

[0172] Figure 45 is Figure 38 a schematic diagram of the tuning device 4 of the antenna 100 in the first state in. As Figure 45 shown, when the tuning device 4 is in the first state, the capacitive element of the second tuner 42 is connected between the fifth connection point P5 and the connecting member, the 0-ohm resistor of the third tuner 43 is connected between the second connection point P2 and the reference ground, the inductive element of the first tuner 41 is connected between the third connection point P3 and the reference ground, the inductive element of the fourth tuner 44 is connected between the seventh connection point P7 and the reference ground, and the capacitive element of the fifth tuner 45 is connected between the eighth connection point P8 and the reference ground.

[0173] Among them, as Figure 45 shown, when the tuning device 4 is in the first state, the capacitance value of the capacitive element of the second tuner 42 is 0.5 pF, the inductance value of the inductive element of the first tuner 41 is 1.3 nH, the inductance value of the inductive element of the fourth tuner 44 is 10 nH, and the capacitance value of the capacitive element of the fifth tuner 45 is 0.6 pF. However, it is not limited to this. The capacitance value of the capacitive element of the second tuner 42, the inductance value of the inductive element of the first tuner 41, the inductance value of the inductive element of the fourth tuner 44, and the capacitance value of the capacitive element of the fifth tuner 45 can also be set to other values according to the actual situation.

[0174] Figure 46 For ​ the radiation pattern and directivity coefficient of the antenna 100 shown. From ​ it can be seen that due to the resonance of the newly introduced second parasitic radiator 3, part of the radiation energy in the lower left corner is deflected upward, so that the radiation pattern is more evenly distributed, and the directivity coefficient is further reduced to 3.35 dBi.

[0175] ​ For ​ the schematic diagram when the tuning device 4 of the antenna 100 in ​ is in the fourth state. As

[0176] shown, the tuning device 4 has a fourth state. When the tuning device 4 is in the fourth state, the 0-ohm resistor of the second tuner 42 is connected between the fifth connection point P5 and the connecting member, and the resonance frequency of the first parasitic radiator 2 is greater than the resonance frequency of the main radiator 1, and the resonance frequency is greater than the resonance frequency of the main radiator 1.

[0177] In some embodiments, as ​ shown, when the tuning device 4 is in the fourth state, the inductive element of the first tuner 41 is connected between the third connection point P3 and the reference ground, and the inductive element of the third tuner 43 is connected between the second connection point P2 and the reference ground. At this time, the first parasitic radiator 2 is equivalent to a differential mode structure with both ends open-ended. Such a setting can better adjust the resonance frequency of the first parasitic radiator 2 to be beneficial to the first parasitic radiator 2 to improve the antenna efficiency.

[0178] In some embodiments, as ​As shown, when the tuning device 4 is in the fourth state, the inductive element of the fourth tuner 44 is connected between the seventh connection point P7 and the reference ground, and the capacitive element of the fifth tuner 45 is connected between the eighth connection point P8 and the reference ground.

[0179] Among them, as ​ shown, the inductance values of the inductive elements of the first tuner 41 and the third tuner 43 are both 5.1 nH, the inductance value of the inductive element of the fourth tuner 44 is 10 nH, and the capacitance value of the capacitive element of the fifth tuner 45 is 0.6 pF.

[0180] ​ are ​ the S-parameter curves and efficiency curves of the antenna 100 in ​ are ​ the radiation pattern and directivity coefficient of the antenna 100 in . It can be seen from ​ the S-parameter curves that the resonance frequency of the first parasitic radiator 2 is around 2.5 GHz. Comparing ​ with the efficiency curves, it can be seen that the efficiency has increased by about 1 dB. It can be seen from ​ that the overall directivity coefficient of the antenna 100 is about 3.7 dBi, and the energy radiated in the right direction of the radiation pattern is relatively strong.

[0181] Although the description of this application will be introduced in combination with some embodiments, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of introducing the implementation as an application is to cover other alternatives or modifications that may be extended based on the claims of this application. In order to provide a deep understanding of this application, many specific details will be included in the above description. This application can also be implemented without using these details. In addition, in order to avoid confusing or obscuring the key points of this application, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0182] In the embodiments of this application, the terms "first", "second", "third", "fourth", "fifth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth", "fifth" may explicitly or implicitly include one or more of such features.

[0183] In the embodiments of this application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0184] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The orientation terms mentioned in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer", etc., are only references to the directions of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the embodiments of the present application. "A plurality of" means at least two.

[0185] The reference to "one embodiment" or "some embodiments" etc. described in this specification means that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present application. Thus, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0186] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An antenna, characterized in that, It includes a main radiator (1), a first parasitic radiator (2), a second parasitic radiator (3), and a tuning device (4); The main radiator (1) is disposed between the first parasitic radiator (2) and the second parasitic radiator (3). There is a first gap (7) between the first parasitic radiator (2) and the main radiator (1). The main radiator (1) has a feeding point (P0) and a first connection point (P1). The feeding point (P0) is used to connect to a feed source (400), and the first connection point (P1) is connected to the reference ground; The first parasitic radiator (2) has a second connection point (P2) and a third connection point (P3), and the second connection point (P2) is connected to the reference ground; the second parasitic radiator (3) has a fourth connection point (P4) and a fifth connection point (P5), and the fourth connection point (P4) is connected to the reference ground; The tuning device (4) includes a first tuner (41) and a second tuner (42). The first tuner (41) is connected between the third connection point (P3) and the reference ground, and the second tuner (42) is connected between the fifth connection point (P5) and the reference ground.

2. The antenna according to claim 1, wherein The tuning device (4) has a first state. When the tuning device (4) is in the first state, the resonance frequencies of both the first parasitic radiator (2) and the second parasitic radiator (3) are less than the resonance frequency of the main radiator (1).

3. The antenna according to claim 2, wherein The tuning device (4) further includes a third tuner (43). The third tuner (43) is connected between the second connection point (P2) and the reference ground; when the tuning device (4) is in the first state, the inductive element of the first tuner (41) is connected between the third connection point (P3) and the reference ground, and the capacitive element of the second tuner (42) is connected between the fifth connection point (P5) and the reference ground; the capacitive element or 0-ohm resistor of the third tuner (43) is connected between the second connection point (P2) and the reference ground.

4. The antenna according to claim 2 or 3, wherein The tuning device (4) further includes a feeder tuner (40); The feeder tuner (40) includes a first inductive element (L1) and a first capacitive element (C1). The first electrode of the first capacitive element (C1) is connected to the feeding point (P0), and the second electrode of the first capacitive element (C1) is used to connect to the feed source (400); one end of the first inductive element (L1) is connected between the feeding point (P0) and the first electrode, and the other end is connected to the reference ground; Alternatively, the feeder tuner (40) includes a first inductive element (L1), a first capacitive element (C1), and a second capacitive element (C2). A first electrode of the first capacitive element (C1) is connected to the feeding point (P0), and a second electrode of the first capacitive element (C1) is for connecting to the feed source (400). One end of the first inductive element (L1) is connected between the feeding point (P0) and the first electrode, and the other end is connected to the reference ground. The second capacitive element (C2) is connected between the second electrode and the reference ground.

5. The antenna according to any one of claims 1 to 4, wherein the antenna further includes a third parasitic radiator (5), and the third parasitic radiator (5) is located on a side of the first parasitic radiator (2) away from the first gap (7). The third parasitic radiator (5) has a sixth connection point (P6) and a seventh connection point (P7), and the sixth connection point (P6) is connected to the reference ground. The tuning device (4) further includes a fourth tuner (44), and the fourth tuner (44) is connected between the seventh connection point (P7) and the reference ground.

6. The antenna according to claim 5, wherein the tuning device (4) has a second state. When the tuning device (4) is in the second state, the resonance frequency of the first parasitic radiator (2) is greater than the resonance frequency of the main radiator (1), and the resonance frequency of the second parasitic radiator (3) is less than the resonance frequency of the main radiator (1).

7. The antenna according to claim 6, wherein the tuning device (4) includes a third tuner (43), and the third tuner (43) is connected between the second connection point (P2) and the reference ground. When the tuning device (4) is in the second state, the inductive element and the capacitive element of the third tuner (43) are connected in parallel and are connected between the third connection point (P3) and the reference ground. The first tuner (41) is in an open state, and the capacitive element of the second tuner (42) is connected between the fifth connection point (P5) and the reference ground. The capacitive element of the fourth tuner (44) is connected between the seventh connection point (P7) and the reference ground.

8. The antenna according to any one of claims 5 to 7, wherein the tuning device (4) has a third state. When the tuning device (4) is in the third state, the 0-ohm resistor of the second tuner (42) is connected between the fifth connection point (P5) and the reference ground. The resonance frequency of the first parasitic radiator (2) is less than the resonance frequency of the main radiator (1), and the resonance frequency of the third parasitic radiator (5) is greater than the resonance frequency of the main radiator (1).

9. The antenna according to claim 8, wherein The tuning device (4) includes a third tuner (43) connected between the second connection point (P2) and the reference ground; when the tuning device (4) is in the third state, the inductive element of the first tuner (41) is connected between the third connection point (P3) and the reference ground, and the 0-ohm resistor of the third tuner (43) is connected between the second connection point (P2) and the reference ground; the inductive element of the fourth tuner (44) is connected between the seventh connection point (P7) and the reference ground.

10. The antenna according to any one of claims 5 to 9, characterized in that The tuning device (4) has a fourth state. When the tuning device (4) is in the fourth state, the 0-ohm resistor of the second tuner (42) is connected between the fifth connection point (P5) and the connection member, the resonance frequency of the first parasitic radiator (2) is greater than the resonance frequency of the main radiator (1), and the resonance frequency of the third parasitic radiator (5) is greater than the resonance frequency of the main radiator (1).

11. The antenna according to claim 10, characterized in that The tuning device (4) includes a third tuner (43) connected between the second connection point (P2) and the reference ground; when the tuning device (4) is in the fourth state, the inductive element of the first tuner (41) is connected between the third connection point (P3) and the reference ground, and the inductive element of the third tuner (43) is connected between the second connection point (P2) and the reference ground.

12. The antenna according to any one of claims 5 to 11, characterized in that The antenna further includes a fourth parasitic radiator (6) connected to the third parasitic radiator (5). The fourth parasitic radiator (6) has an eighth connection point (P8). The sixth connection point (P6) is located between the seventh connection point (P7) and the eighth connection point (P8), and the seventh connection point (P7) is located between the sixth connection point (P6) and the first parasitic radiator (2); the tuning device (4) further includes a fifth tuner (45) connected between the eighth connection point (P8) and the reference ground.

13. The antenna according to any one of claims 6 to 12, characterized in that The tuning device (4) further includes a feeder tuner (40), the feeder tuner (40) includes a second inductance element (L2), a third inductance element (L3) and a third capacitance element (C3), the third inductance element (L3) and the third capacitance element (C3) are connected in series, and the third capacitance element (C3) is located between the feeding point (P0) and the third inductance element (L3), the third inductance element (L3) is used to connect the feed source (400), one end of the second inductance element (L2) is connected between the feeding point (P0) and the third capacitance element (C3), and the other end is connected to the reference ground.

14. The antenna according to any one of claims 1 to 13, wherein The main radiator (1) is connected to the second parasitic radiator (3), and the main radiator (1) and the second parasitic radiator (3) are integrally L-shaped.

15. The antenna according to any one of claims 1 to 14, wherein The second connection point (P2) is arranged at the end of the first parasitic radiator (2) close to the first gap (7), and the third connection point (P3) is arranged at the end of the first parasitic radiator (2) far from the first gap (7); and / or, the fifth connection point (P5) is arranged at the end of the second parasitic radiator (3) far from the main radiator (1).

16. An electronic device, characterized in that, Comprising a housing (300), and the antenna (100) according to any one of claims 1 to 15; the housing (300) includes a bottom wall (330), and a side wall (340) arranged at the edge of the bottom wall (330), the bottom wall (330) is configured as the reference ground of the antenna (100), and the radiator of the antenna (100) is located on the side wall.

17. The electronic device according to claim 16, wherein The housing (300) includes a first housing (310) and a second housing (320), the first housing (310) and the second housing (320) can be switched between a folded state and an unfolded state, the first housing (310) and the second housing (320) both include the bottom wall (330) and the side wall (340); the number of the antennas (100) is two, the two antennas (100) are a WIFI antenna and a satellite antenna respectively, at least part of the WIFI antenna is located at the corner of the top of the first housing (310), and at least part of the satellite antenna is located at the corner of the top of the second housing (320).

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