Antenna assembly and intelligent terminal

Abstract

The utility model provides an antenna assembly and an intelligent terminal, and the antenna assembly comprises an antenna array and a feed network. The antenna array comprises a plurality of sections of antenna bodies formed by metal frames; the feed network comprises a plurality of feed units, each feed unit is arranged in an adjacent area of each section of the antenna body, and signals are transmitted to the antenna body in a coupled feed mode. Therefore, the antenna is not easy to damage and convenient to carry and use, insertion loss and clutter caused by the pluggable antenna can be avoided, and the signal quality and the communication efficiency are improved.

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] With the development of communication technology, satellite communication is being used more and more widely in smart terminals. Existing satellite communication antenna solutions mostly employ external, foldable spring antennas, such as... Figure 3 As shown, the operating frequency band of the antenna is adjusted by controlling the length of the spring, and the end of the antenna is connected to the communication chip of the terminal by a coaxial cable; alternatively, a pluggable planar waveguide antenna can be used, such as... Figure 4 As shown, several square waveguides are attached to the surface of a metal ground plane, with a slit cut in the middle of each waveguide to increase the antenna bandwidth. These waveguides are then fed to the terminal's communication chip via microstrip lines. Using an external spring antenna is not only prone to damage but also aesthetically unappealing and does not conform to the usage habits of modern smart terminals. On the other hand, using a pluggable waveguide antenna is not only bulky and inconvenient to carry, but also suffers from insertion loss and noise issues, affecting signal quality and communication efficiency.

[0003] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides an antenna assembly and a smart terminal that are not only durable and easy to carry, but also avoid insertion loss and noise caused by pluggable antennas, thereby improving signal quality and communication efficiency.

[0005] To address the aforementioned technical problems, this application provides an antenna assembly, including an antenna array and a feeding network;

[0006] The antenna array includes multiple antenna bodies formed by metal frames;

[0007] The power supply network includes multiple power supply units, each of which is located in the vicinity of each segment of the antenna body to transmit signals to the antenna body via coupled power supply.

[0008] Optionally, each of the feed units includes a coupling stub, a matching stub, and a feed line formed by microstrip lines;

[0009] The coupling stub is arranged along the length direction of the antenna body and is parallel to the antenna body;

[0010] One end of the matching stub is connected to the coupling stub, and the other end of the matching stub is connected to one end of the feed line. The matching stub includes multiple microstrip lines with different linewidths.

[0011] Optionally, the power supply network further includes a microstrip power divider connected to the plurality of power supply units;

[0012] The microstrip power divider includes a first port and multiple second ports;

[0013] The multiple second ports of the microstrip power divider are respectively connected to the other end of the corresponding feeder.

[0014] Optionally, the length of the coupling stub is the same as the length of the antenna body; and / or the coupling stub and the antenna body are spaced apart by a first preset distance; and / or adjacent antenna bodies are spaced apart by a second preset distance.

[0015] Optionally, the length of the antenna body and the coupling stub is 1 / 4 of the operating wavelength.

[0016] Optionally, the first preset distance is less than or equal to 0.5 mm.

[0017] Optionally, the second preset distance is less than or equal to the operating wavelength.

[0018] Optionally, the antenna array includes four antenna body segments, namely a first antenna body, a second antenna body, a third antenna body, and a fourth antenna body;

[0019] The power supply network includes four power supply units, namely a first power supply unit, a second power supply unit, a third power supply unit, and a fourth power supply unit. The first power supply unit includes a first feeder line, the second power supply unit includes a second feeder line, the third power supply unit includes a third feeder line, and the fourth power supply unit includes a fourth feeder line.

[0020] The length of the first feed line differs from the length of the third feed line by N1λ, the length of the second feed line differs from the length of the fourth feed line by N2λ, the length of the first feed line differs from the length of the fourth feed line by (N3+1 / 12)λ, and the length of the third feed line differs from the length of the second feed line by (N4+1 / 12)λ, where λ is the operating wavelength, and N1, N2, N3, and N4 are natural numbers;

[0021] The width ratio of the first feed line, the second feed line, the third feed line, and the fourth feed line is 1:2:2:1.

[0022] This application also provides a smart terminal, including the antenna assembly described above.

[0023] Optionally, the smart terminal further includes a circuit board disposed in the vicinity of the antenna array, and the power supply network is disposed on the circuit board.

[0024] As described above, the antenna assembly and smart terminal of this application include an antenna array and a feeding network. The antenna array comprises multiple antenna bodies formed by metal frames. The feeding network includes multiple feeding elements, each disposed in the vicinity of each antenna body segment, transmitting signals to the antenna body via coupled feeding. Thus, by embedding the antenna assembly within the smart terminal, it is not only less prone to damage and easier to carry, but also avoids insertion loss and clutter caused by pluggable antennas, improving signal quality and communication efficiency. Furthermore, by utilizing the smart terminal's metal frame as the antenna body, it not only saves hardware costs but also conserves space occupied by other components. Attached Figure Description

[0025] 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.

[0026] Figure 1 A schematic diagram of the hardware structure of a mobile terminal to implement the various embodiments of this application.

[0027] Figure 2 This is a communication network system architecture diagram provided for an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of the structure of an external spring antenna provided by existing technology.

[0029] Figure 4 This is a schematic diagram of the structure of a pluggable planar waveguide antenna provided by existing technology.

[0030] Figure 5 This is a schematic diagram of the structure of a smart terminal provided in an embodiment of this application.

[0031] Figure 6 This is a partial enlarged view of a smart terminal provided in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the structure of an antenna assembly provided in an embodiment of this application.

[0033] Figure 8 This is a schematic diagram of the reflection coefficient curve of one of the antenna elements operating in the L-band, according to an embodiment of this application.

[0034] Figure 9This is a schematic diagram of the reflection coefficient curve of the arrayed antenna assembly operating in the L-band, according to an embodiment of this application.

[0035] Figure 10 This is a schematic diagram of the efficiency curve of the arrayed antenna assembly operating in the L-band, according to an embodiment of this application.

[0036] 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

[0037] 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.

[0038] 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. Furthermore, 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 must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0039] 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.

[0040] 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.

[0041] 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).”

[0042] It should be noted that step designations such as S10 and S20 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S20 first and then S10, etc., but these should all be within the protection scope of this application.

[0043] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0044] 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.

[0045] Smart terminals can be implemented in various forms. For example, the smart terminals described in this application may include smart 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.

[0046] 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.

[0047] 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.

[0048] The following is combined Figure 1 A detailed introduction to each component of the mobile terminal:

[0049] 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), and 5G, etc.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] Optionally, UE201 can be the aforementioned terminal 100, which will not be described in detail here.

[0065] 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.

[0066] 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).

[0067] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.

[0068] Although the above description uses the LTE system as an example, those skilled in the art should understand 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, and future new network systems (such as 5G), etc., without limitation.

[0069] Based on the above-described mobile terminal hardware structure and communication network system, various embodiments of this application are proposed.

[0070] Please see Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of a smart terminal provided in an embodiment of this application. Figure 6 This is a partial enlarged view of a smart terminal provided in an embodiment of this application.

[0071] This application provides a smart terminal, including the antenna assembly 300 described in the following embodiments. The antenna assembly 300 in this application embodiment is disposed inside the smart terminal and includes an antenna array 310 and a feeding network 320. The smart terminal includes a metal frame 400 and a circuit board 500. The circuit board 500 is disposed in the adjacent area of ​​the antenna array 310, and the feeding network 320 is disposed on the circuit board 500. A communication chip is also disposed on the circuit board 500, and the feeding network 320 is electrically connected to the communication chip.

[0072] In this embodiment, the antenna array includes multiple antenna bodies formed by metal frames, with gaps between adjacent antenna bodies. The feed network 320 includes multiple feed elements, each feed element being located in the vicinity of each antenna body segment, i.e., each feed element being located within a preset distance range of each antenna body segment, to transmit signals to the antenna body through coupled feeding.

[0073] In this embodiment, by embedding the antenna assembly into the terminal device, it is not only less prone to damage and easier to carry and use, but also avoids insertion loss and noise caused by pluggable antennas, thus improving signal quality and communication efficiency. Furthermore, by using the metal frame of the smart terminal as the antenna body, not only are hardware costs saved, but also the space occupied by decorative elements is saved.

[0074] It should be noted that in practical applications, the antenna assembly in this embodiment can be positioned at the top, bottom, left, or right side of the smart terminal, depending on its internal structure and component layout. Positioning the antenna assembly at the top of the smart terminal, based on its appearance design and the user's grip habits, will maximize the reception of satellite signals.

[0075] Please see Figure 7 , Figure 7 This is a schematic diagram of the structure of an antenna assembly provided in an embodiment of this application.

[0076] In this embodiment, the antenna array 310 in the antenna assembly includes four antenna bodies formed by metal frames, namely a first antenna body 311, a second antenna body 312, a third antenna body 313, and a fourth antenna body 314. The second antenna body 312 is adjacent to the first antenna body 311, the third antenna body 313 is adjacent to the second antenna body 312, and the fourth antenna body 314 is adjacent to the third antenna body 313. The adjacent antenna bodies are spaced apart by a second preset distance D2, that is, the gap between adjacent metal frames is the second preset distance D2.

[0077] Accordingly, the feed network 320 in the antenna assembly includes four feed units: a first feed unit 321 coupled to the first antenna body 311, a second feed unit 322 coupled to the second antenna body 312, a third feed unit 323 coupled to the third antenna body 313, and a fourth feed unit 324 coupled to the fourth antenna body 314. The first antenna body 311 and the first feed unit 321 form the first antenna unit, the second antenna body 312 and the second feed unit 322 form the second antenna unit, the third antenna body 313 and the third feed unit 323 form the third antenna unit, and the fourth antenna body 314 and the fourth feed unit 324 form the fourth antenna unit.

[0078] Specifically, each feed unit includes a coupling stub, a matching stub, and a feed line formed by microstrip lines. In this embodiment, the first feed unit 321 includes a first coupling stub 3211, a first matching stub 3212, and a first feed line 3213; the second feed unit 322 includes a second coupling stub 3221, a second matching stub 3222, and a second feed line 3223; the third feed unit 323 includes a third coupling stub 3231, a third matching stub 3232, and a third feed line 3233; and the fourth feed unit 324 includes a fourth coupling stub 3241, a fourth matching stub 3242, and a fourth feed line 3243. The coupling stub is arranged along the length of the antenna body and parallel to the antenna body. The length of the coupling stub is the same as the length of the antenna body, and the coupling stub is spaced apart from the antenna body by a first preset distance D1. Signal transmission between the antenna body and the feed unit can be achieved through the equivalent capacitance formed by the coupling stub and the antenna body. One end of the matching stub is connected to the coupling stub, and the other end of the matching stub is connected to one end of the feed line. The matching stub consists of multiple microstrip lines with different linewidths. Impedance matching is achieved by varying the linewidth of the matching stub, thereby replacing impedance adjustment using inductors and capacitors and further reducing hardware costs.

[0079] Optionally, the length L of the antenna body and coupling stub is 1 / 4 of the operating wavelength. The first preset distance D1 between the coupling stub and the antenna body is less than or equal to 0.5 mm. The second preset distance D2 between adjacent antenna bodies is less than or equal to the operating wavelength. For example, in a 2G communication scenario, when the antenna assembly operates in the L-band (1-2 GHz), the length of the antenna body and coupling stub can range from 3.8 to 5.7 mm.

[0080] In this embodiment, the antenna assembly operates in the L-band, the length of the antenna body and the coupling stub is 4mm, the first preset distance D1 between the coupling stub and the antenna body is 0.5mm, and the second preset distance D2 between adjacent antenna bodies is 1mm.

[0081] Optionally, the feed network 320 also includes a microstrip line power divider 325 connected to multiple feed units. The microstrip line power divider 325 is used for parallel feed arraying to achieve phase and power distribution. Specifically, the microstrip line power divider 325 includes a first port and multiple second ports; the multiple second ports of the microstrip line power divider 325 are respectively connected to the other end of the corresponding feed line. The microstrip line power divider 325 utilizes the transmission characteristics of the microstrip line to distribute the input signal to multiple output ports according to a certain ratio, or to combine multiple input signals into a single output signal.

[0082] In this embodiment, the microstrip power divider 325 is a five-port power divider. The second ports include ports PORT1, PORT2, PORT3, and PORT4, and the first port is port PORT5. Port PORT1 is connected to the first feed line 3213 in the first feed unit 321; port PORT2 is connected to the second feed line 3223 in the second feed unit 322; port PORT3 is connected to the third feed line 3233 in the third feed unit 323; port PORT4 is connected to the fourth feed line 3243 in the fourth feed unit 324; and port PORT5 is connected to the communication chip on the circuit board 500 via the fifth feed line 3251. By changing the length of the feed lines (i.e., microstrip lines) connected to each second port, the phase of each antenna element can be controlled. By changing the width of the feed lines (i.e., microstrip lines) connected to each port, the power distribution of each port can be controlled, thereby adjusting the maximum radiation direction and gain of the antenna assembly.

[0083] In this embodiment, the length of the first feed line 3213 connected to port PORT1 differs from the length of the third feed line 3233 connected to port PORT3 by N1λ, the length of the second feed line 3223 connected to port PORT2 differs from the length of the fourth feed line 3243 connected to port PORT4 by N2λ, the length of the first feed line 3213 differs from the length of the fourth feed line 3243 by (N3+1 / 12)λ, and the length of the third feed line 3233 differs from the length of the second feed line 3223 by (N4+1 / 12)λ, where λ is the operating wavelength, and N1, N2, N3, and N4 are natural numbers. The width ratio of the first feed line 3213, the second feed line 3223, the third feed line 3233, the fourth feed line 3243, and the fifth feed line 3251 is 1:2:2:1:3, meaning that the fifth feed line 3251 connected to port PORT5 has the widest linewidth, while the first feed line 3213 connected to port PORT1 and the fourth feed line 3243 connected to port PORT4 have the narrowest linewidths. This allows the input power ratio of the four antenna elements in this embodiment to be controlled at 1:2:2:1.

[0084] In the array configuration of this embodiment, the aforementioned feed line length ratio allows for a phase difference of 30° between adjacent antenna elements, and the aforementioned feed line width ratio maximizes the input power of the two middle antenna elements, thereby ensuring that the maximum radiation direction of the antenna assembly is directly upward, achieving a maximum gain of 3.28 dBi. In practical applications, the feed line length and width ratios can be adaptively adjusted to meet different phase and power requirements, and this application does not impose any limitations on this.

[0085] Figure 8 This is a schematic diagram of the reflection coefficient curve of one of the antenna elements operating in the L-band according to an embodiment of this application; Figure 9 This is a schematic diagram of the reflection coefficient curve of the arrayed antenna assembly when it operates in the L-band, according to an embodiment of this application. Figure 10 This is a schematic diagram showing the efficiency curve of the arrayed antenna assembly operating in the L-band, according to an embodiment of this application. Figure 8 As shown, within the operating frequency band of 0.8GHz-1.7GHz, the reflection coefficient of a single antenna element is below -4dB; Figure 9 As shown, within the operating frequency band of 0.6GHz-2GHz, the reflection coefficient of the arrayed antenna components is also below -4dB; Figure 10 As shown, the average antenna efficiency of the arrayed antenna components is -6dB across the entire L-band, with the best performance achieved in the 1GHz-1.7GHz band, where the antenna efficiency can reach above -6dB.

[0086] Therefore, the antenna array scheme in this application embodiment not only enables the antenna components to provide enhanced radiation performance in the expected direction while maintaining good power distribution efficiency, but also, by embedding the antenna components in the terminal device, it is not only less prone to damage and easy to carry and use, but also avoids insertion loss and clutter caused by pluggable antennas, further improving signal quality and communication efficiency. Furthermore, by using the metal frame of the smart terminal to form the antenna body, and using a microstrip power divider for parallel feeding array, signal transmission is carried out in the form of coupled feeding, which not only saves hardware costs, but also saves space occupied by components and wiring.

[0087] The embodiments of the smart terminal provided in this application may include all the technical features of any of the above-described antenna component embodiments. The extended and explanatory content of the specification is basically the same as the embodiments of the above methods, and will not be repeated here.

[0088] 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.

[0089] 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.

[0090] The steps in the method of this application embodiment can be adjusted, combined, or deleted according to actual needs.

[0091] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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 Includes antenna array and feed network; among which, The antenna array includes multiple antenna bodies formed by metal frames; The power supply network includes multiple power supply units, each of which is located in the vicinity of each segment of the antenna body to transmit signals to the antenna body via coupled power supply.

2. The antenna assembly of claim 1, wherein, Each of the aforementioned feed units includes a coupling stub, a matching stub, and a feed line formed by microstrip lines; wherein... The coupling stub is arranged along the length direction of the antenna body and is parallel to the antenna body; One end of the matching stub is connected to the coupling stub, and the other end of the matching stub is connected to one end of the feed line. The matching stub includes multiple microstrip lines with different linewidths.

3. The antenna assembly of claim 2, wherein, The power supply network also includes a microstrip power divider connected to the plurality of power supply units; The microstrip power divider includes a first port and multiple second ports; The multiple second ports of the microstrip power divider are respectively connected to the other end of the corresponding feeder.

4. The antenna assembly of claim 2, wherein, The length of the coupling stub is the same as the length of the antenna body; and / or The coupling stub is spaced from the antenna body by a first preset distance; and / or The adjacent antenna bodies are spaced apart by a second preset distance.

5. The antenna assembly of claim 4, wherein, The length of the antenna body and the coupling stub is 1 / 4 of the operating wavelength.

6. The antenna assembly of claim 4, wherein, The first preset distance is less than or equal to 0.5 mm.

7. The antenna assembly of claim 4, wherein, The second preset distance is less than or equal to the working wavelength.

8. The antenna assembly according to claim 3, characterized in that, The antenna array includes four antenna bodies: a first antenna body, a second antenna body, a third antenna body, and a fourth antenna body. The power supply network includes four power supply units, namely a first power supply unit, a second power supply unit, a third power supply unit, and a fourth power supply unit. The first power supply unit includes a first feeder line, the second power supply unit includes a second feeder line, the third power supply unit includes a third feeder line, and the fourth power supply unit includes a fourth feeder line. The length of the first feed line differs from the length of the third feed line by N1λ, the length of the second feed line differs from the length of the fourth feed line by N2λ, the length of the first feed line differs from the length of the fourth feed line by (N3+1 / 12)λ, and the length of the third feed line differs from the length of the second feed line by (N4+1 / 12)λ, where λ is the operating wavelength, and N1, N2, N3, and N4 are natural numbers; and / or The width ratio of the first feed line, the second feed line, the third feed line, and the fourth feed line is 1:2:2:

1.

9. A smart terminal, characterized by The smart terminal includes an antenna assembly as described in any one of claims 1 to 8.

10. The intelligent terminal of claim 9, wherein, The smart terminal also includes a circuit board, which is disposed in the vicinity of the antenna array, and the power supply network is disposed on the circuit board.

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