An antenna assembly and a smart terminal

Abstract

This application relates to an antenna assembly and a smart terminal. The antenna assembly includes a first radiator and a second radiator, with a gap between them. The two radiators are connected by a bridging capacitor to increase the antenna's radiating aperture. A first feed circuit and a second feed circuit are respectively provided on the first and second radiators, with a first feed point and a second feed point respectively. The first feed point is connected to the first radiator through the first feed circuit, and the second feed point is connected to the second radiator through the second feed circuit. The antenna assembly and smart terminal of this application have high antenna radiation efficiency.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to an antenna assembly and a smart terminal. Background Technology

[0002] In the current antenna design of smart terminals, designing antennas that can adapt to a wider operating frequency band and achieve antenna isolation within a limited space is a design challenge.

[0003] In the process of conceiving and implementing this application, the inventors discovered at least the following problems: In the prior art, antenna efficiency is usually improved by means of antenna body multiplexing and using bridging devices to increase the antenna radiation aperture, but the feed point can only feed in a signal of one frequency band at a time, the number of working modes is relatively small, and antenna switching is required to cover multiple frequency bands, resulting in low antenna radiation efficiency.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides an antenna assembly and a smart terminal with high antenna radiation efficiency.

[0006] To solve the above-mentioned technical problems, this application provides an antenna assembly, including a first radiator, a second radiator, a first feeding circuit, a second feeding circuit, a bridging capacitor, a first feeding point, and a second feeding point;

[0007] A gap is provided between the first radiator and the second radiator, and the gap ends of the first radiator and the second radiator are connected by a bridging capacitor;

[0008] The first feed point is connected to the first radiator through the first feed circuit, and the second feed point is connected to the second radiator through the second feed circuit.

[0009] Optionally, the non-slit end of the first radiator is the grounding end, and the connection point between the first feed point and the first radiator is located on the side closer to the grounding end between the grounding end and the slit end.

[0010] Optionally, the non-slit end of the second radiator is an open end, and the connection point between the second feed point and the second feed circuit is located on the side closer to the slit end between the open end and the slit end.

[0011] Optionally, the length of the second radiator is 0.3 to 3 times the length of the first radiator.

[0012] Optionally, the total length of the first radiator and the second radiator is 30 mm to 50 mm.

[0013] Optionally, the break length is 0.8 mm to 1.5 mm.

[0014] Optionally, the first power supply circuit includes a first inductor, a second inductor, a first capacitor, and a second capacitor;

[0015] The first inductor and the first capacitor are connected in series between the first radiator and the first feed point; one end of the second inductor is connected to the common terminal of the first inductor and the first capacitor, and the other end of the second inductor is grounded; one end of the second capacitor is connected to the wiring between the first capacitor and the first feed point, and the other end of the second capacitor is grounded.

[0016] Optionally, the second feeding circuit includes a third inductor and a third capacitor; the third inductor and the third capacitor are connected in parallel between the second radiator and the second feeding point.

[0017] Optionally, the second power supply circuit further includes a fourth capacitor and a fifth capacitor; one end of the fourth capacitor is connected to the common terminal of the third capacitor and the third inductor, and the other end of the fourth capacitor is connected to the second power supply point; one end of the fifth capacitor is connected to the common terminal of the third capacitor and the third inductor, and the other end of the fifth capacitor is connected to the ground wire.

[0018] Optionally, one end of the bridging capacitor is connected to the first radiator, and the other end of the bridging capacitor is connected to the wiring between the second radiator and the second feed circuit.

[0019] This application also provides a smart terminal, including the antenna assembly described above.

[0020] Optionally, the smart terminal also includes a housing and a circuit board, the housing integrating a first radiator and a second radiator of the antenna assembly; and / or, at least one of the first feeding circuit, the second feeding circuit, and the bridging capacitor of the antenna assembly is disposed on the circuit board.

[0021] Optionally, the circuit board also includes a first spring pin, and a first power supply circuit disposed on the motherboard is connected to the first radiator through the first spring pin.

[0022] Optionally, the circuit board also includes a second spring pin, through which the second power supply circuit is connected to the second radiator.

[0023] Optionally, the circuit board also includes a third spring pin, one end of which is connected to the first radiator and the other end of which is connected to the second radiator.

[0024] Optionally, the circuit board also includes a main ground plane and a ground wire for the main ground plane antenna assembly.

[0025] The antenna assembly of this application includes a first radiator and a second radiator, with a gap between them. The two radiators are connected by a bridging capacitor to increase the antenna's radiating aperture. A first feed circuit and a second feed circuit are respectively provided on the first and second radiators, with a first feed point and a second feed point respectively. The first feed point is connected to the first radiator through the first feed circuit, and the second feed point is connected to the second radiator through the second feed circuit. The antenna assembly and smart terminal of this application have high antenna radiation efficiency. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0027] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application.

[0028] Figure 2 This is a communication network system architecture diagram provided for an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the antenna assembly provided in an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of GPS current mode according to an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the WiFi current mode in an embodiment of this application.

[0032] Figure 6 This is a schematic diagram of the 3.8GHz band current mode of embodiment N77 of this application.

[0033] Figure 7 This is a schematic diagram of the 4.2GHz band current mode of embodiment N77 of this application.

[0034] Figure 8 This is a schematic diagram of the first power supply circuit structure according to an embodiment of this application.

[0035] Figure 9 This is a schematic diagram of the second power supply circuit structure according to the first embodiment of this application.

[0036] Figure 10This is a simulation curve of the reflection coefficient and isolation of the antenna assembly in the first embodiment of this application.

[0037] Figure 11 This is a simulation curve of the antenna efficiency of the antenna assembly in the first embodiment of this application.

[0038] Figure 12 This is a schematic diagram of the second power supply circuit structure according to the second embodiment of this application.

[0039] Figure 13 This is a simulation curve of the reflection coefficient and isolation of the antenna assembly in the second embodiment of this application.

[0040] Figure 14 This is a simulation curve of the antenna efficiency of the antenna assembly in the second embodiment of this application.

[0041] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0043] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Optionally, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which needs to be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0044] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0045] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0046] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0047] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0048] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0049] Smart terminals can be implemented in various forms. For example, the smart terminals described in this application may include mobile terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0050] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminals.

[0051] Please see Figure 1 This is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that... Figure 1 The mobile terminal structure shown does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0052] The following is combined Figure 1 A detailed introduction to each component of the mobile terminal:

[0053] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, and a duplexer. Furthermore, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G, and 6G.

[0054] WiFi is a short-range wireless transmission technology. Mobile terminals, through the WiFi module 102, can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 1 WiFi module 102 is shown, but it is understood that it is not a necessary component of a mobile terminal and can be omitted as needed without changing the nature of the invention.

[0055] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0056] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage media) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0057] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0058] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0059] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands sent by processor 110. In addition, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.

[0060] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 based on the type of touch event. Although in Figure 1 In this embodiment, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0061] Interface unit 108 serves as an interface through which at least one external device can connect to mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.

[0062] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0063] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.

[0064] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0065] although Figure 1 As not shown, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0066] To facilitate understanding of the embodiments of this application, the communication network system on which the mobile terminal of this application is based is described below.

[0067] Please see Figure 2 , Figure 2 This application provides a communication network system architecture diagram. The communication network system is an LTE system based on the universal mobile communication technology. The LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and the operator's IP services 204, which are connected in sequence.

[0068] Optionally, UE201 can be the aforementioned terminal 100, which will not be described in detail here.

[0069] E-UTRAN202 includes eNodeB2021 and other eNodeB2022s. Optionally, eNodeB2021 can connect to other eNodeB2022s via backhaul (e.g., X2 interface). eNodeB2021 connects to EPC203 and can provide UE201 with access to EPC203.

[0070] EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gateway) 2034, a PGW (Packet Data Network Gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).

[0071] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0072] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.

[0073] Based on the above-described mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0074] Figure 3 The diagram below shows the structure of an antenna assembly provided in an embodiment of this application. The antenna assembly includes: a first radiator 301, a second radiator 302, a first feed circuit 401, a second feed circuit 402, a bridging capacitor 403, a first feed point F1, and a second feed point F2.

[0075] A gap is provided between the first radiator 301 and the second radiator 302. The gap ends of the first radiator 301 and the second radiator 302 are connected by a bridging capacitor 403. The first feed point F1 is connected to the first radiator 301 through the first feed circuit 401, and the second feed point F2 is connected to the second radiator 302 through the second feed circuit 402.

[0076] In one embodiment, the non-seamless end of the first radiator 301 is a grounded end, and the connection point between the first feed point F1 and the first radiator 301 is located on the side closer to the grounded end between the grounded end and the slotted end; and / or, the non-seamless end of the second radiator 302 is an open end, and the connection point between the second feed point F2 and the second feed circuit is located on the side directly close to the slotted end between the open end and the slotted end, which can realize a shared dual-antenna design with high isolation.

[0077] In one embodiment, one end of the bridging capacitor 403 is connected to the open end of the first radiator 301, and the other end of the bridging capacitor 403 is connected to the wiring between the second feed circuit 402 and the second radiator 302.

[0078] Optionally, to improve the effectiveness of the antenna assembly in the smart terminal, the first radiator 301 and the second radiator 302 of the antenna assembly can be positioned in the upper left of the rear view of the smart terminal.

[0079] Optionally, the total length of the first radiator 301 and the second radiator 302 is 30-45 mm.

[0080] Optionally, the gap distance between the first radiator 301 and the second radiator 302 is 0.8-1.5 mm.

[0081] Optionally, the length of the second radiator 302 can be 0.3 to 3 times that of the first radiator 301.

[0082] Optionally, the capacitance of the bridging capacitor 403 is less than 3pF.

[0083] In one embodiment, the first feed point F1 of the antenna assembly may, but is not limited to, support both Global Positioning System (GPS) and Wireless Fidelity (WiFi) operating frequency bands. Figure 4 This is a schematic diagram of GPS current modes according to an embodiment of this application, such as... Figure 4 As shown, the current distribution pattern of the GPS can be a quarter-wavelength pattern from the ground terminal of the first radiator 301 to the open terminal of the second radiator 302. Figure 5 This is a schematic diagram of the WiFi current mode in an embodiment of this application. The WiFi current distribution mode is a quarter-wavelength mode from the first feed point F1 to the open end of the second radiator 302.

[0084] In one embodiment, the second feed point F2 of the antenna assembly can support the new radio band N77. Figure 6 This is a schematic diagram of the 3.8GHz band current mode of embodiment N77 of this application, as shown below. Figure 6 As shown, the current distribution mode of N77 in the 3.8GHz band is a quarter-wavelength mode from the second feed point F2 to the open end of the second radiator 302. Figure 7 This is a schematic diagram of the 4.2GHz band current mode of embodiment N77 of this application, as shown below. Figure 7 As shown, the current distribution mode of N77 at 4.2 GHz is a three-quarter wavelength mode from the ground terminal of the first radiator 301 to the open terminal of the second radiator 302.

[0085] In one embodiment, the smart terminal described in this application includes the antenna assembly described above.

[0086] In one embodiment, the smart terminal further includes a housing and a circuit board. The housing integrates a first radiator 301 and a second radiator 302 of the antenna assembly. The first radiator 301 and the second radiator 302 of the antenna assembly are integrated on the housing of the smart terminal. The first power supply circuit 401, the second power supply circuit 402 and the bridging capacitor 403 can be integrated on the circuit board of the smart terminal. The first power supply circuit 401 and the second power supply circuit 402 can be connected to the first radiator 301 and the second radiator 302 on the housing through multiple metal springs disposed on the circuit board.

[0087] In one embodiment, the circuit board of the smart terminal further includes a first spring pin, and the first power supply circuit 401 disposed on the motherboard is connected to the first radiator 301 through the first spring pin.

[0088] In one embodiment, the circuit board of the smart terminal further includes a second spring pin, and the second power supply circuit 402 is connected to the second radiator 302 through the second spring pin.

[0089] In one embodiment, the circuit board of the smart terminal further includes a third spring pin, one end of the bridging capacitor 403 is connected to the first radiator 301 through the third spring pin, and the other end of the bridging capacitor 403 is connected to the second radiator 302.

[0090] In one embodiment, the circuit board of the smart terminal also includes a main ground plane, which is the ground wire of the antenna assembly.

[0091] Reference Figure 8 , Figure 8 The diagram below shows the structure of the first power supply circuit according to an embodiment of this application. The first power supply circuit 401 includes: a first inductor 4011, a first capacitor 4012, a second inductor 4013, and a second capacitor 4014. The first inductor 4011 and the first capacitor 4012 are connected in series between the first radiator 301 and the first power supply point F1. One end of the second inductor 4013 is connected to the common terminal of the first inductor 4011 and the second capacitor 4012, and the other end of the second inductor 4013 is connected to the ground wire. One end of the second capacitor 4014 is connected to the first power supply point F1, and the other end is connected to the ground wire.

[0092] Optionally, the first feed point F1 can be connected to the first radiator 301 through the first feed circuit 401 to excite GPS and WiFi resonance through the first feed circuit 401.

[0093] Reference Figure 9 , Figure 9 This is a schematic diagram of the second power supply circuit structure according to the first embodiment of this application. The second power supply circuit 402 includes a third inductor 4021 and a third capacitor 4022. The third inductor 4021 and the third capacitor 4022 are connected in parallel between the second radiator 302 and the second power supply point F2.

[0094] Optionally, the second feed point F2 can be connected to the second radiator 302 through the second feed circuit 402. The second feed point F2 can excite the N77 resonance through the second feed circuit 402. The second feed circuit 402 exhibits high impedance characteristics for GPS and WiFi frequency band signals. Therefore, the first radiator 301 and the second radiator 302 have a high degree of isolation at this time.

[0095] Reference Figure 10 , Figure 10 This is a simulation curve showing the reflection coefficient versus isolation of the antenna assembly in the first embodiment of this application. Figure 10The horizontal axis represents the frequency of the transmitted signal (referred to as Frequencyy in the figure), in GHz, and the vertical axis represents the amplitude of the reflection coefficient and isolation of the transmitted signal, in dB. The reflection coefficient curve of the first radiator 301 is S1,1, the reflection coefficient curve of the second radiator 302 is S2,2, and the isolation curve between the first radiator 301 and the second radiator 302 is S2,1. Figure 10 In the diagram, point ① (1.576382, -14.99062) on S1,1 represents the reflection coefficient of the first radiator 301 in the L1 band of GPS; point ② (2.468972, -17.76367) on S1,1 represents the reflection coefficient of the first radiator in the 2.4GHz band of WiFi; and points ③ (3.3, -5.283534), ④ (3.868945, -24.75636), and ⑤ (4.2, -7.387092) on S2,2 represent the reflection coefficient of the second radiator 302 in the operating frequency band of N77. The curves S1,1 and S2,2 show that the first radiator 301 and the second radiator 302 have good reflection coefficients in their operating frequency bands, and the isolation curve S2,1 between the two radiators is generally below -15dB within the main operating frequency band of the antenna assembly, indicating good isolation.

[0096] Reference Figure 11 , Figure 11 This is a simulation curve of the antenna efficiency of the antenna assembly in the first embodiment of this application. The horizontal axis represents the frequency of the transmitted signal (referred to as Frequencyy in the figure), in GHz, and the vertical axis represents the amplitude of the total system efficiency, in dB. The total system efficiency curve of the first radiator 301 (referred to as System Total Efficiency [GPS] in the figure) shows that point ① (1.601112, -1.695555) represents the total system efficiency of the first radiator 301 in the L1 band of GPS, and point ② (2.475024, -1.832459) represents the total system efficiency of the first radiator 301 in the 2.4GHz band of WiFi. The total system efficiency curve of the second radiator 302 (referred to as System Total Efficiency [GPS] in the figure) shows the system efficiency of the first radiator 301 in the L1 band of GPS. The total efficiency of the second radiator 302 in the N77 frequency band is marked by points ③ (3.35, -2.98182), ④ (3.854477, -1.337335), and ⑤ (4.15, -3.869159). Thus, the average total efficiency of the second radiator 302 in the N77 frequency band is -2.6dB. This shows that the antenna assembly of this application has excellent total efficiency in the preset operating frequency band.

[0097] Optionally, the second feed point F2 can also be set to feed in the L5 band signal of GPS, and the second feed circuit 402 can be adjusted to excite the resonance of the L5 band of GPS. In this embodiment, the first feed point F1 is still connected to the first radiator 301 through the first feed circuit 401, and feeds in the L1 band signal of GPS and the 2.4GHz band signal of WiFi.

[0098] Reference Figure 12 , Figure 12 This is a schematic diagram of the second power supply circuit structure according to the second embodiment of this application. The second power supply circuit of the second embodiment of this application adds a fourth capacitor 4023 and a fifth capacitor 4024 to the original second power supply circuit 402 of the first embodiment. Optionally, the fourth capacitor 4023 is connected in series between the common terminal of the third inductor 4021 and the third capacitor 4022 and the second power supply point F2; one end of the fifth capacitor 4024 is connected between the common terminal of the third inductor 4021 and the third capacitor 4022 and the fourth capacitor 4023; and the other end of the fifth capacitor 4024 is connected to the ground wire.

[0099] Optionally, the second feed point F2 can be connected to the second radiator 302 through the second feed circuit 402, and the second feed point F2 can excite the L5 band resonance of the GPS signal through the second feed circuit 402.

[0100] Reference Figure 13 , Figure 13 This is a simulation curve of the reflection coefficient and isolation of the antenna assembly in the second embodiment of this application. The horizontal axis represents the frequency of the transmitted signal (referred to as Frequencyy in the figure) in GHz, and the vertical axis represents the amplitude of the reflection coefficient and isolation of the transmitted signal in dB. The reflection coefficient curve of the first radiator 301 is S1,1, the reflection coefficient curve of the second radiator 302 is S2,2, and the isolation curve between the first radiator 301 and the second radiator 302 is S2,1.

[0101] Figure 13In the diagram, point ① (1.5772911, -14.20818) on S1,1 represents the reflection coefficient of the first radiator 301 in the L1 band of GPS; point ② (2.495143, -18.07554) on S1,1 represents the reflection coefficient of the first radiator in the 2.4GHz band of WiFi; points ③ (1.1679, -13.17119) and ④ (2.487353, -12.7024) on S2,1 represent the two peak points of the isolation curve between the two radiators, both of which are less than -12dB, indicating good isolation between the two radiators; point ⑤ (1.166248, -11.54478) on S2,2 represents the reflection coefficient of the second radiator 402 in the L5 band of GPS. Curves S1,1 and S2,2 show that the first radiator 301 and the second radiator 302 have good reflection coefficients in the operating frequency band.

[0102] Reference Figure 14 , Figure 14 This is a simulation curve of the antenna efficiency of the antenna assembly in the second embodiment of this application. The horizontal axis represents the frequency of the transmitted signal (referred to as Frequencyy in the figure), in GHz, and the vertical axis represents the amplitude of the total system efficiency, in dB. The system efficiency curve of the second radiator 302 (System Tot.Efficiency[AC1]) shows that point ① (1.154924, -7.85506) represents the total system efficiency of the second radiator 302 in the L5 band of GPS. The system efficiency curve of the first radiator 301 (System Tot.Efficiency[GPS]) shows that point ② (1.571428, -2.763176) represents the total system efficiency of the first radiator 301 in the L1 band of GPS, and point ③ (2.511687, -2.014499) represents the total system efficiency of the first radiator 301 in the 2.4 band of WiFi. It can be seen that the antenna assembly of this application has excellent total system efficiency within the preset operating frequency band.

[0103] The antenna assembly of this application includes a first radiator and a second radiator, with a gap between them. The two radiators are connected by a bridging capacitor to increase the antenna's radiating aperture. A first feed circuit and a second feed circuit are respectively provided on the first and second radiators, with a first feed point and a second feed point respectively provided on the first and second feed circuits. The first feed point is connected to the first radiator through the first feed circuit, and the second feed point is connected to the second radiator through the second feed circuit. The antenna assembly and smart terminal of this application have high antenna radiation efficiency, especially in the frequency bands mainly used by the smart terminal provided in this application, such as GPS, WiFi, N77, and satellite communication.

[0104] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, as those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0105] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0106] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.

[0107] In this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions that are not described in detail later can be referred to their previous relevant detailed descriptions.

[0108] In this application, the descriptions of the various embodiments have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0109] The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0110] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An antenna assembly, characterized by It includes a first radiator, a second radiator, a first feed circuit, a second feed circuit, a bridging capacitor, a first feed point, and a second feed point; A gap is provided between the first radiator and the second radiator, and the gap ends of the first radiator and the second radiator are connected by the bridging capacitor; The first feed point is connected to the first radiator through the first feed circuit, and the second feed point is connected to the second radiator through the second feed circuit.

2. The antenna assembly of claim 1, wherein, The non-slit end of the first radiator is the grounding end, and the connection point between the first feed point and the first radiator is located on the side closer to the grounding end, between the grounding end and the slit end; or, The non-slit end of the second radiator is an open end, and the connection point between the second feed point and the second feed circuit is located on the side closer to the slit end between the open end and the slit end.

3. The antenna assembly of claim 1, wherein, Includes at least one of the following: The length of the second radiator is 0.3 to 3 times the length of the first radiator; The total length of the first radiator and the second radiator is 30mm to 50mm; The length of the fracture is 0.8 mm to 1.5 mm.

4. The antenna assembly of claim 1, wherein, The first power supply circuit includes a first inductor, a second inductor, a first capacitor, and a second capacitor; The first inductor and the first capacitor are connected in series between the first radiator and the first feed point; one end of the second inductor is connected to the common terminal of the first inductor and the first capacitor, and the other end of the second inductor is grounded; one end of the second capacitor is connected to the wiring between the first capacitor and the first feed point, and the other end of the second capacitor is grounded.

5. The antenna assembly of claim 1, wherein, The second power supply circuit includes a third inductor and a third capacitor; The third inductor and the third capacitor are connected in parallel between the second radiator and the second feed point.

6. The antenna assembly of claim 5, wherein, The second power supply circuit also includes a fourth capacitor and a fifth capacitor; One end of the fourth capacitor is connected to the common terminal of the third capacitor and the third inductor, and the other end of the fourth capacitor is connected to the second feed point; one end of the fifth capacitor is connected to the common terminal of the third capacitor and the third inductor, and the other end of the fifth capacitor is connected to the ground wire.

7. The antenna assembly of any one of claims 1 to 6, wherein, One end of the bridging capacitor is connected to the first radiator, and the other end of the bridging capacitor is connected to the wiring between the second radiator and the second feed circuit.

8. A smart terminal, characterized by Includes the antenna assembly as described in any one of claims 1 to 6.

9. The smart terminal as claimed in claim 8, wherein the smart terminal further comprises a housing and a circuit board, the housing integrating a first radiator and a second radiator of the antenna assembly; and / or, at least one of the first feeding circuit, the second feeding circuit, and the bridging capacitor of the antenna assembly is disposed on the circuit board.

10. The intelligent terminal of claim 9, wherein the at least one of the plurality of applications is a browser application. The circuit board also includes at least one of the following: The first spring pin connects the first power supply circuit, which is located on the motherboard, to the first radiator. The second spring pin is used to connect the second power supply circuit to the second radiator. The third spring pin connects one end of the bridging capacitor to the first radiator, and the other end of the bridging capacitor to the second radiator. The main floor includes the ground wire of the antenna assembly.

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