CN111129718B

CN111129718B - Terminal antenna system and mobile terminal

Info

Publication number: CN111129718B
Application number: CN202010047017.8A
Authority: CN
Inventors: 陈笛; 彭立
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2024-02-09
Anticipated expiration: 2040-01-16
Also published as: CN111129718A

Abstract

The invention discloses a terminal antenna system which is applied to a mobile terminal, wherein the terminal antenna system comprises a metal frame, a gap is formed between the metal frame and the metal frame to form a first metal strip and a second metal strip, the first metal strip is provided with a first grounding point, the second metal strip is provided with a second grounding point, the metal frame is provided with a lap joint point, the antenna is formed by the first metal strip, the second metal strip, the gap and the lap joint point, and the first metal strip and the second metal strip are coupled to generate resonance frequency; and the adjusting unit is connected with the lap joint and fixed on the metal frame through an antenna bracket and used for adjusting the resonant frequency. The embodiment of the invention also discloses a mobile terminal. According to the technical scheme provided by the embodiment of the invention, the frequency band requirement of the 4G antenna and the frequency band requirement of the 5G antenna can be met, the mobile phone space is effectively utilized, and the problem of insufficient mobile phone space is solved.

Description

Terminal antenna system and mobile terminal

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a terminal antenna system and a mobile terminal.

Background

With the continued development of wireless communication technology, the demand for faster data transmission and better mobile devices by mobile users is increasing. 5G has been developed, and 5G communication has the characteristics of high speed, large capacity, low time delay and the like, and multiple input multiple output (Multiple Input Multiple Output, MIMO) technology becomes one of key technologies for realizing 5G communication. Because of the wider bandwidth of the 5G antenna, N41:2496M-2690M, N78:3300M-3800M, N79:4400M-5000M. The existing design at present is to combine N78 or N79 on the basis of 4G frequency bands (B5:824-880M, B8:880-960M, B3:1710-1880M, B1:1920-2170M, B39:1880-1929M, B38:2570-2620M, B40:2300-2400M, B41:2496-2690M), and can not be compatible with two frequency bands of 5G, and additionally, N78 or N79 branches are required to be independently added, so that the cost is increased, the space structure of a mobile phone is occupied, the design of an antenna of the mobile phone is not facilitated, and the implementation on a full-screen smart mobile phone is more difficult.

Disclosure of Invention

The invention mainly aims to provide a terminal antenna system and a mobile terminal, which aim to concentrate multiple frequency bands on one antenna unit, effectively utilize the space of a mobile phone and solve the problem of insufficient space of the mobile phone.

In order to achieve the above object, the present invention provides a terminal antenna system, which is applied to a mobile terminal, the terminal antenna system comprising:

the antenna comprises a metal frame, a first metal strip and a second metal strip, wherein a gap is formed in the metal frame, the first metal strip is provided with a first grounding point, the second metal strip is provided with a second grounding point, the metal frame is provided with a lap joint point, the antenna is formed by the first metal strip, the second metal strip, the gap and the lap joint point, and the first metal strip and the second metal strip are coupled to generate resonance frequency;

and the adjusting unit is connected with the lap joint and fixed on the metal frame through an antenna bracket and used for adjusting the resonant frequency.

Preferably, the gap comprises a first gap, a second gap and a third gap, the metal frame between the first gap and the second gap is the first metal strip, and the metal frame between the second gap and the third gap is the second metal strip.

Preferably, the widths of the first gap, the second gap and the third gap are 1-2mm;

the length of the first metal strip is 45-50mm, and the length of the second metal strip is 20-25mm.

Preferably, the overlap point comprises:

a feeding point overlapping point arranged on the first metal strip;

a first contact point provided on the first metal strip;

a second contact point provided on the first metal strip;

and a third lap joint point arranged on the second metal strip.

Preferably, the adjusting unit includes:

a feed point connected to the feed point overlap point;

the first electronic switch comprises a control end, a first end and a second end, wherein the first end is connected with the first lap joint point through a first inductor, and the second end is electrically connected with the first lap joint point;

the second electronic switch comprises a control end, a first end, a second end, a third end and a fourth end, wherein the first end is electrically connected with the second lapping point through a first resistor, the second end is electrically connected with the third lapping point through a second inductor, the third end is connected with the third lapping point through a second resistor, and the fourth section is electrically connected with the third lapping point.

And the control unit is electrically connected with the control end of the first electronic switch and the control end of the second electronic switch.

Preferably, when the control unit controls the first electronic switch to be turned off and controls the second electronic switch to be turned on, the first metal strip generates 824M-880MHz frequency, and the first metal strip is coupled with the second metal strip to generate 2496M-2690MHz frequency and 2570-2620MHz frequency;

when the second electronic switch is connected with the third end and the control unit controls the first electronic switch to be connected with the first end, the first metal strip generates 880M-960MHz frequency;

when the control unit controls the first electronic switch to be turned off and controls the second electronic switch to be turned on at the first end, the second metal strip generates 1710M-1880MHz frequency;

when the first electronic switch is turned off and the second electronic switch is turned on at the same time as the first end of the first electronic switch is turned on, the control unit controls the second electronic switch to be turned on at the second end of the first electronic switch, and the second metal strip generates 2300M-2400MHz frequency;

when the first electronic switch is turned off and the second electronic switch is turned on at the same time when the first electronic switch is turned on, the control unit controls the second electronic switch to be turned on at the third end, and the second metal strip generates 1920M-2170MHz and 1880M-1929 MHz.

Preferably, the control unit controls the first electronic switch to be connected to the first capacitor, and controls the second electronic switch to be connected to the second capacitor, so that the two resonance frequencies cover 2500M-2700MHz and 4400M-4900MHz;

when the control unit controls the first electronic switch to be switched to the first inductor, a resonance frequency of 3300M-3800MHz can be generated;

when the control unit controls the second electronic switch to the second inductor, a resonance frequency of 3300M-4200MHz can be generated.

Preferably, the terminal antenna system further comprises a first antenna branch, which is arranged on the antenna bracket and is electrically connected to the feed point;

when the control unit controls the first electronic switch to be switched off and controls the second electronic switch to be switched on simultaneously at the first end and the second end, the second metal strip generates frequency in the n78 frequency range, and the first antenna branch extends the frequency in the n78 frequency range to 3.3GHz-3.8GHz.

Preferably, the antenna further comprises a second antenna branch, which is arranged on the antenna bracket and is grounded;

when the control unit controls the first electronic switch to be switched off and the second electronic switch to be switched on, the second metal strip generates frequency in an n79 frequency range, and the second antenna branch expands the frequency in the n79 frequency range to 4.4GHz-5GHz.

Preferably, the overlap point comprises:

a feeding point overlapping point arranged on the first metal strip;

a fourth contact point provided on the first metal strip;

a fifth contact point provided on the second metal strip;

a sixth lap joint point arranged on the second metal strip;

the adjusting unit includes:

a feed point connected to the feed point overlap point;

the third electronic switch comprises a control end, a first end and a second end, wherein the first end is connected with the first lap joint point through a third inductor, and the second end is electrically connected with the first lap joint point;

the fourth electronic switch comprises a control end, a first end, a second end, a third end and a fourth end, wherein the first end is electrically connected with the second lapping point through a third resistor, the second end is electrically connected with the second lapping point through a fourth inductor, the third end is connected with the third lapping point through a fourth resistor, and the fourth section is electrically connected with the third lapping point.

In addition, in order to achieve the above purpose, the invention also provides a mobile terminal, which comprises the terminal antenna system.

According to the terminal antenna system and the mobile terminal, the metal frame is divided into the first metal strip and the second metal strip through the arrangement of the gaps, the two metal strips are coupled to generate the resonant frequency, and the coverage range of the resonant frequency is adjusted through the adjusting unit, so that the resonant frequency can meet the frequency band requirement of the 4G antenna and the frequency band requirement of the 5G antenna, the mobile phone space is effectively utilized, and the problem of insufficient mobile phone space is solved.

Drawings

Fig. 1 is a general schematic diagram of a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention;

FIG. 3 is a schematic diagram of a wireless communication system of the mobile terminal shown in FIG. 1;

fig. 4 is a schematic structural diagram of a first embodiment of the terminal antenna system of the present invention;

FIG. 5 is a schematic view of a portion of a metal frame according to the present invention;

fig. 6 is a schematic structural diagram of a second embodiment of the terminal antenna system of the present invention;

fig. 7 is a schematic structural diagram of a third embodiment of the terminal antenna system of the present invention.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present invention, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.

The terminal may be implemented in various forms. For example, the terminals described in the present invention may include mobile terminals such as cell phones, tablet computers, notebook computers, palm computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminals such as digital TVs, desktop computers, and the like.

The following description will be given taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.

Referring to fig. 1, fig. 1 is a schematic diagram of a mobile terminal 1 according to an embodiment of the invention. The mobile terminal 1 includes a terminal antenna system 20, and the terminal antenna system 20 is provided in the upper right corner of the mobile terminal 1 in this embodiment. In other embodiments of the present invention, terminal antenna system 20 can be located in other locations of the mobile terminal, such as the upper left corner, lower right corner, etc. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 1 is not limiting of the mobile terminal and that the mobile terminal 1 may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

In this embodiment, the terminal antenna system 20 can meet the frequency band requirement of the 4G antenna and the frequency band requirement of the 5G antenna, effectively utilize the mobile phone space, and solve the problem of insufficient mobile phone space.

Referring to fig. 2, which is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention, 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. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 1 is not limiting of the mobile terminal and that the mobile terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

The following describes the components of the mobile terminal in detail with reference to fig. 2:

the radio frequency unit 101 may be used for receiving and transmitting signals during the information receiving or communication process, specifically, after receiving downlink information of the base station, processing the downlink information by the processor 110; and, the uplink data is transmitted 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, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication, global System for Mobile communications), GPRS (General Packet Radio Service ), CDMA2000 (Code Division Multiple Access, CDMA 2000), WCDMA (Wideband Code Division Multiple Access ), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency Division Duplex Long term evolution), and TDD-LTE (Time Division Duplexing-Long Term Evolution, time Division Duplex Long term evolution), etc.

WiFi belongs to a short-distance wireless transmission technology, and a mobile terminal can help a user to send and receive e-mails, browse web pages, access streaming media and the like through the WiFi module 102, so that wireless broadband Internet access is provided for the user. Although fig. 2 shows a WiFi module 102, it is understood that it does not belong to the necessary constitution of the mobile terminal, and can be omitted entirely as required within the scope of not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the mobile terminal 100. The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive an audio or video signal. The a/V input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, and the like, and can process such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting the audio signal.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 1061 and/or the backlight when the mobile terminal 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.

The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. In particular, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by 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, and sends the touch point coordinates to the processor 110, and can receive and execute commands sent from the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as specifically not limited herein.

Further, the touch panel 1071 may overlay the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or thereabout, the touch panel 1071 is transferred to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the mobile terminal, which is not limited herein.

The interface unit 108 serves as an interface through which at least one external device can be connected with the mobile terminal 100. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system.

Although not shown in fig. 2, the mobile terminal 100 may further include a bluetooth module or the like, which is not described herein.

In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based will be described below.

Referring to fig. 3, fig. 3 is a schematic diagram of a communication network system according to an embodiment of the present invention, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 202, an epc (Evolved Packet Core, evolved packet core) 203, and an IP service 204 of an operator that are sequentially connected in communication.

Specifically, the UE201 may be the terminal 100 described above, and will not be described herein.

The E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. The eNodeB2021 may be connected with other eNodeB2022 by a backhaul (e.g., an X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide access from the UE201 to the EPC 203.

EPC203 may include MME (Mobility Management Entity ) 2031, hss (Home Subscriber Server, home subscriber server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, pgw (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function, policy and tariff function entity) 2036, and so on. The MME2031 is a control node that handles signaling between the UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location registers (not shown) and to hold user specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034 and PGW2035 may provide IP address allocation and other functions for UE201, PCRF2036 is a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.

Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present invention is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present invention, and are not of specific significance per se. Thus, "module" and "component" may be used in combination.

The terminal may be implemented in various forms. For example, terminals described in the present invention may include mobile terminals such as cell phones, tablet computers, cameras, notebook computers, palm top computers, personal digital assistants (Personal Digital Assistant, PDA), portable media players (Portable Media Player, PMP), navigation devices, wearable devices, smart bracelets, pedometers, and fixed terminals such as digital TVs, desktop computers, and the like.

It will be appreciated by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.

Based on the above-mentioned terminal hardware structure and communication network, the present invention will be described in detail by way of specific embodiments.

Referring to fig. 4 and fig. 5 together, fig. 4 is a schematic structural diagram of a first embodiment of the terminal antenna system according to the present invention, and fig. 5 is a schematic structural diagram of a portion of a metal frame according to the present invention. The terminal antenna system provided by the invention is applied to mobile terminals, such as 5G mobile phone terminals. As shown in fig. 4 and 5, the terminal antenna system 20 includes a metal frame 101, a first slot 102, a second slot 103, a third slot 104, a joint point 105, and an adjustment unit 106.

The first slit 102, the second slit 103 and the third slit 104 are disposed on the metal frame 101, so that the metal frame 101 forms a first metal strip 1011 and a second metal strip 1012. The metal frame between the first slit 102 and the second slit 103 is a first metal strip 1011, and the metal frame between the second slit 103 and the third slit 104 is a second metal strip 1012. Referring to fig. 5, a first metal strip 1011 is provided with a ground GND1, and a second metal strip is provided with a ground GND2. The metal frame 101, the first slot 102, the second slot 103, the third slot 104, and the joint 105 constitute one antenna. The first metal strip 1011 and the second metal strip 1012 are coupled to generate two resonant frequencies. An adjusting unit 106 is connected to the antenna through the joint 105, and adjusts two resonant frequencies generated by the antenna. In this embodiment, the adjusting unit 106 is mounted on the PCB, and the PCB is provided with a spring T, and the adjusting unit 106 is electrically connected to the spring T and is in contact connection with the contact point 105 of the metal frame 101 through the spring T.

In one embodiment of the present invention, the metal frame 101 is in a strip shape, the first slit 102 and the second slit 103 are disposed on a first side of the metal frame 101, the third slit 104 is disposed on a second side of the metal frame, the first metal strip 1011 is disposed on the first side of the metal frame 101, and the second metal strip 1012 is disposed on the first side and the second side of the metal frame 101, i.e. comprises corners of the first side and the second side of the metal frame 101. The corners are arcuate corners, and it is understood that in other embodiments of the invention, the corners may be right angles, not limited thereto. The resonant frequency of the antenna is adjusted by the adjusting unit 105, so that the resonant frequency of the antenna can meet the frequency band requirement of the 4G antenna and the frequency band requirement of the 5G antenna.

With further reference to fig. 5, in this embodiment, the lap points 105 include a feed point lap point 1051, a first lap point 1052, a second lap point 1053, and a third lap point 1054. The feeding point overlap point 1051 is disposed on the first metal strip 1011 and located on the right side of the first ground point GND 1. The first overlap point 1052 is disposed on the first metal strip 1011 and is located on the right side of the feeding point overlap point 1051. The second overlapping point 1053 is disposed on the first metal strip 1011 and is located on the right side of the first overlapping point 1052. The third overlap point 1053 is disposed on the second metal strip 1012 and is located at the left side of the second ground point GND 2. It should be understood that the foregoing is merely for better explaining the present invention, and the specific positions of the lapping points and the grounding points may be adjusted accordingly according to the practical application requirements, which is not limited herein. The terminal antenna system 20 further comprises an antenna bracket 107, the adjusting unit 106 is fixed to the metal frame through the antenna bracket 107, and the antenna bracket 107 can be fixedly connected with the metal frame 101 through screws.

In the present embodiment, the widths of the first slit 102, the second slit 103 and the third slit 104 are 1 to 2mm, the length of the first metal strip 1011 is 45 to 50mm, and the length of the second metal strip 1012 is 20 to 25mm. The width of the first grounding point GND1 and the second grounding point GND2 can be adjusted, so that the length of the first metal strip 1011 and the second metal strip 1012 can be adjusted according to practical applications.

Through the implementation of this embodiment, divide into first metal strip and second metal strip with the metal frame through setting up the gap, two metal strips produce resonant frequency through the coupling, and then adjust resonant frequency's coverage through the regulating unit to make resonant frequency can satisfy 4G antenna's frequency channel demand and 5G antenna's frequency channel demand, effectively utilize the cell-phone space, solve the problem that the cell-phone space is not enough.

Fig. 6 is a schematic structural diagram of a second embodiment of the terminal antenna system of the present invention. The terminal antenna system provided by the invention is applied to 5G mobile terminals, such as 5G mobile phone terminals. As shown in fig. 6, the terminal antenna system 10a includes a metal bezel 101a, a first slot 102a, a second slot 103a, a third slot 104a, a lap joint 105a, and an adjustment unit 106a.

The first slit 102a, the second slit 103a and the third slit 104a are disposed on the metal frame 101a, so that the metal frame 101a forms the first metal strip 1011a and the second metal strip 1012a. The metal frame between the first slit 102a and the second slit 103 is a first metal strip 1011a, and the metal frame between the second slit 102a and the third slit 104a is a second metal strip 1012a. Referring to fig. 5, a first metal strip 1011 is provided with a ground GND1, and a second metal strip is provided with a ground GND2. The metal frame 101a, the first slot 102a, the second slot 103a, the third slot 104a, and the overlap point 105a form an antenna. The first metal strip 1011a is coupled to the second metal strip 1012a to produce two resonant frequencies. The adjusting unit 106a is disposed at the connection with the antenna through the overlap point 105a, and is used for adjusting two resonant frequencies generated by the antenna.

The metal frame 101a is in a strip shape, the first gap 102a and the second gap 103 are arranged on the first side length of the metal frame 101a, the third gap 104a is arranged on the second side length of the metal frame 101a, the first metal strip 1011a is positioned on the first side length of the metal frame 101a, and the second metal strip 1012a is positioned on the first side length and the second side length of the metal frame 101a, namely, the corner comprising the first side length and the second side length of the metal frame 101 a. The corners are arcuate corners, and it is understood that in other embodiments of the invention, the corners may be right angles, not limited thereto. The resonant frequency of the antenna is adjusted by the adjusting unit 105a, so that the resonant frequency of the antenna can meet the frequency band requirement of the 4G antenna and the frequency band requirement of the 5G antenna.

In the present embodiment, the overlapping points 105a include a feeding point overlapping point 1051a, a first overlapping point 1052a, a second overlapping point 1053a, and a third overlapping point 1054a. The feeding point overlap point 1051a is disposed on the first metal strip 1011a and is located on the right side of the first ground point GND 1. The first overlap point 1052a is disposed on the first metal strip 1011a, and is located on the right side of the feeding point overlap point 1051 a. The second overlapping point 1053a is disposed on the first metal strip 1011a, and is located on the right side of the first overlapping point 1052a. The third overlap point 1054a is disposed on the second metal strip 1012a to the left of the second ground point.

In the present embodiment, the widths of the first slit 102a, the second slit 103a and the third slit 104a are 1 to 2mm, the length of the first metal strip 1011a is 45 to 50mm, and the length of the second metal strip 1012a is 20 to 25mm. The width of the first grounding point GND1 and the second grounding point GND2 can be adjusted, so that the length of the first metal strip 1011 and the second metal strip 1012 can be adjusted according to practical applications.

In the present embodiment, the adjusting unit 106 is mounted on a PCB, and the adjusting unit 106a includes a feeding point 1061a, a first electronic switch S1, a second electronic switch S2, and a control unit 1062a. The feed point 1061a is connected to the feed point overlap point 1051 a. In the present embodiment, the feeding point K is connected to the spring piece a mounted on the PCB board, and is in contact connection with the feeding point lap point 1051a on the first metal strip 1011a through the spring piece a. The first electronic switch S1a includes a control end, a first end and a second end, the first end is connected to the first lap joint point 1052a through the first inductor L1, and the second end is electrically connected to the first lap joint point 1052a. In this embodiment, the first end of the first inductor L1 is electrically connected to the first end of the first electronic switch S1, and the common point between the second end of the first inductor L1 and the second end of the first electronic switch S1 is connected to the spring B mounted on the PCB, and is in contact connection with the first lap point 1052a on the first metal strip 1011a through the spring B. The inductance value range of the first inductance L1 is: 10-56nH. The second electronic switch S2 includes a control end, a first end, a second end, a third end and a fourth end, where the first end is electrically connected to the second bonding point 1053a through the first resistor R1, the second end is electrically connected to the third bonding point 1054a through the second inductor L2, the third end is connected to the third bonding point 1054a through the second resistor R2, and the fourth end is electrically connected to the third bonding point 1054a. In this embodiment, the first end of the first resistor R1 is electrically connected to the first end of the second electronic switch S2, and the second end of the first resistor R1 is connected to the spring C mounted on the PCB, and is in contact connection with the second lap point 1053a on the first metal strip 1011a through the spring C. Wherein, the resistance value of the first resistor R1 is 0 ohm. The first end of the second inductor L2 is electrically connected to the second end of the second electronic switch S2, the first end of the second resistor R2 is electrically connected to the third end of the second electronic switch S2, and a common point among the second end of the second inductor L2, the second end of the second resistor R2 and the fourth end of the second electronic switch S2 is connected to a spring D mounted on the PCB, and is in contact connection with a third lap joint 1054a on the second metal strip 1012a through the spring D. The inductance value of the second inductor L2 is 3nH, and the resistance value of the second resistor R2 is 0 ohm. The control unit 1062a is electrically connected to the control terminal of the first electronic switch S1 and the control terminal of the second electronic switch S2, and is used for controlling the first electronic switch S1 and the second electronic switch S2 to switch to different paths.

In the present embodiment, when the control unit 1062a controls the first electronic switch S1 to be turned off and controls the second electronic switch S2 to be turned on, the first metal strip 1011a generates the frequency of the B5 band, i.e. the frequency of 824M-880MHz, and the first metal strip is coupled with the second metal strip 1012a of 1011a to generate the frequency of the B41/B38 band, i.e. the frequencies of 2496M-2690MHz and 2570-2620 MHz. In the test stage, the lengths of the first metal strip 1011a and the second metal strip 1012a can be adjusted by adjusting the positions of the first ground point GND1 and the second ground point GND2, so that the first metal strip 1011a just generates the frequency of the B5 band, and the first metal strip 1011a is coupled with the second metal strip 1012a to generate the frequency of the B41/B38.

When the second electronic switch S2 is turned on and the control unit 1062a controls the first electronic switch S1 to turn on the first terminal, the first metal strip 1011a generates the frequency of the B8 band, i.e. the frequency of 880M-960 MHz. When the control unit 1062a controls the first electronic switch S1 to be turned off and controls the second electronic switch S2 to be turned on, the second metal bar 1012a generates the frequency of the B3 band, that is, the frequency of 1710M-1880 MHz. When the first electronic switch S1 is turned off and the second electronic switch S2 is turned on at the same time, the control unit 1062a controls the second electronic switch S2 to turn on the second terminal, and the second metal strip 1012a generates the frequency of the B40 band, that is, the frequency of 2300M-2400 MHz. When the first electronic switch S1 is turned off and the second electronic switch S2 is turned on at the same time when the first electronic switch S2 is turned on, the control unit controls 1062a the second electronic switch S2 to turn on the third electronic switch, and the second metal strip 1012a generates frequencies in the B1/B9 frequency band, that is, 1920M-2170MHz and 1880M-1929 MHz.

In this embodiment, the terminal antenna system 10a further includes a first antenna branch 108a disposed on the antenna mount and electrically connected to the feed point 1061a. The first antenna branch 108a may be connected to the feed point 1061a through a via in the antenna mount. When the control unit 1062a controls the first electronic switch S1 to be turned off and controls the second electronic switch S2 to be turned on simultaneously at the first end and the second end, the second metal strip 1012a generates a frequency in the n78 frequency range, and the first antenna branch 108a extends the frequency in the n78 frequency range to 3.3GHz-3.8GHz.

In this embodiment, the terminal antenna system 20a further includes a second antenna branch 109a disposed on the antenna mount. The second antenna branch 109a is grounded. When the control unit 1062a controls the first electronic switch S1 to be turned off and controls the second electronic switch S2 to be turned on, the second metal strip 1012a generates a frequency in the n79 frequency range, and the second antenna branch 109a extends the frequency in the n79 frequency range to 4.4GHz-5GHz.

Through implementation of this embodiment, the first electronic switch S1 and the second electronic switch S2 of the control unit 106a are controlled to switch and select different paths to adjust the resonant frequency, so that the resonant frequency can meet the frequency band requirement of the 4G antenna and the frequency band requirement of the 5G antenna, and the mobile phone space is effectively utilized, so as to solve the problem of insufficient mobile phone space.

Fig. 7 is a schematic partial structure of a third embodiment of the terminal antenna system according to the present invention. The terminal antenna system provided by the invention is applied to mobile terminals, such as 5G mobile phone terminals. In the present embodiment, the terminal antenna system 10b includes a metal bezel 101b, a first slot 102b, a second slot 103b, a third slot 104b, a lap joint 105b, and an adjustment unit 106b.

The first slit 102b, the second slit 103b and the third slit 104b are disposed on the metal frame 101b, so that the metal frame 101b forms the first metal strip 1011b and the second metal strip 1012b. The metal frame between the first slit 102b and the second slit 103b is a first metal strip 1011b, and the metal frame between the second slit 102b and the third slit 104b is a second metal strip 1012b. Referring to fig. 5, the first metal strip 1011b is provided with a ground point GND1, and the second metal strip 1012b is provided with a ground point GND2. The metal frame 101b, the first slot 102b, the second slot 103b, the third slot 104b, and the overlap point 105b form an antenna. The first metal strip 1011b is coupled to the second metal strip 1012b to produce two resonant frequencies. The adjusting unit 106b is disposed at the connection with the antenna through the overlap point 105b, and is used for adjusting two resonant frequencies generated by the antenna.

The metal frame 101b is in a strip shape, the first slit 102b and the second slit 103b are arranged on the first side length of the metal frame 101b, the third slit 104b is arranged on the second side length of the metal frame, the first metal strip 1011b is positioned on the first side length of the metal frame 101b, and the second metal strip 1012b is positioned on the first side length and the second side length of the metal frame 101b, namely, the corner comprising the first side length and the second side length of the metal frame 101 b. The corners are arcuate corners, and it is understood that in other embodiments of the invention, the corners may be right angles, not limited thereto. The resonant frequency of the antenna is adjusted by the adjusting unit 106b, so that the resonant frequency of the antenna can meet the frequency band requirement of the 4G antenna and the frequency band requirement of the 5G antenna.

In the present embodiment, the overlap points 105b include a feeding point overlap point 1051b, a fourth overlap point 1052b, a fifth overlap point 1053b, and a sixth overlap point 1054b. The feeding point overlap point 1051b is disposed on the first metal strip 1011b and is located on the right side of the first ground point GND 1. The fourth lap point 1052b is disposed on the first metal strip 1011b, to the right of the feed point lap point 1051 b. The fifth overlap point 1053b is disposed on the second metal strip 1012b to the right of the first slit 102 b. The sixth overlap point 1054b is disposed on the second metal strip 1012b and is located at the left side of the second ground point GND 2. The terminal antenna system 10b further includes an antenna bracket 107b, where the antenna bracket 107b may be fixedly connected to the metal frame 101b by a screw.

In the present embodiment, the widths of the first slit 102b, the second slit 103b, and the third slit 104b are 1 to 2mm, the length of the first metal strip 1011b is 45 to 50mm, and the length of the second metal strip 1012b is 20 to 25mm. The width of the first grounding point GND1 and the second grounding point GND2 can be adjusted, so that the length of the first metal strip 1011b and the second metal strip 1012b can be adjusted according to practical applications.

In the present embodiment, the adjusting unit 106b is mounted on a PCB, and the adjusting unit 106b includes a feeding point 1061b, a third electronic switch S3, a fourth electronic switch S4, and a control unit 1062b. The feed point 1061b is connected to the feed point overlap point 1051 b. In the present embodiment, the feeding point Kb is connected to the spring E mounted on the PCB board, and is in contact with the feeding point lap point 1051b on the first metal strip 1011b via the spring E. The third electronic switch S3 includes a control end, a first end and a second end, where the first end is connected to the fourth overlap point 1052b through the third inductor L3, and the second end is electrically connected to the fourth overlap point 1052b. In this embodiment, the first end of the third inductor L3 is electrically connected to the first end of the third electronic switch S3, and the common point between the second end of the third inductor L3 and the second end of the third electronic switch S3 is connected to the spring F mounted on the PCB, and is in contact connection with the fourth lap point 1052b on the first metal strip 1011b through the spring F. The fourth electronic switch S4 includes a control end, a first end, a second end, a third end and a fourth end, where the first end is electrically connected to the fifth bonding point 1053b through the third resistor R3, the second end is electrically connected to the fifth bonding point 1054b through the fourth inductor L4, the third end is connected to the sixth bonding point 1054b through the fourth resistor R4, and the fourth end is electrically connected to the sixth bonding point 1054b. In this embodiment, the first end of the third resistor R2 is electrically connected to the first end of the fourth electronic switch S4, the first end of the fourth inductor L4 is electrically connected to the second end of the fourth electronic switch S4, the common point between the second end of the third resistor R3 and the second end of the fourth inductor L4 is connected to the spring G mounted on the PCB, and the spring G is in contact connection with the fifth lap point 1053b on the first metal strip 1011 b. The first end of the fourth resistor R4 is electrically connected to the third end of the fourth electronic switch S4, and the common point between the second end of the fourth resistor R4 and the fourth end of the fourth electronic switch S4 is connected to the spring H mounted on the PCB, and is in contact connection with the sixth lap point 1054b on the second metal strip 1012b through the spring H. The control unit 1062b is electrically connected to the control terminal of the third electronic switch S3 and the control terminal of the fourth electronic switch S4, and is used for controlling the third electronic switch S3 and the fourth electronic switch S4 to switch to different paths.

In this embodiment, the terminal antenna system further includes a first antenna branch 108b and a second antenna branch 109b. The first antenna branch 108b is disposed on the antenna mount and electrically connected to the feed point 1061b. The first antenna branch 108b may be connected to the feed point 1061b through a via in the antenna mount. The second antenna branch 109b is grounded. The principle of adjusting and expanding the cooperative frequency by the electronic switch and the antenna branch in the third embodiment is similar to that of the second embodiment, and will not be described here again. The third embodiment is different from the second embodiment in that the first metal strip 1011b of the third embodiment is provided with only one fourth bonding point 1052b, the fourth bonding point 1052b is electrically connected with the third electronic switch S3, and the second metal strip 1012b has two bonding points: the fifth and sixth bonding points 1053b and 1054b, and the fifth and sixth bonding points 1053b and 1054b are electrically connected to the fourth electronic switch S4. When the fourth electronic switch S4 is turned on at the first end or the second end, the coupling resonance length of the second metal strip 1012b is shortened, and the resonance frequency of the antenna is changed by changing the length of the second metal strip 1012 b.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method of the embodiments of the present invention.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. A terminal antenna system for use in a mobile terminal, the terminal antenna system comprising:

the adjusting unit is connected with the lap joint point, is fixed on the metal frame through an antenna bracket and is used for adjusting the resonant frequency;

the overlap point includes:

a feeding point overlapping point arranged on the first metal strip;

a first contact point provided on the first metal strip;

a second contact point provided on the first metal strip;

a third contact point provided on the second metal strip;

the adjusting unit includes:

a feed point connected to the feed point overlap point;

The second electronic switch comprises a control end, a first end, a second end, a third end and a fourth end, wherein the first end is electrically connected with the second lapping point through a first resistor, the second end is electrically connected with the third lapping point through a second inductor, the third end is connected with the third lapping point through a second resistor, and the fourth section is electrically connected with the third lapping point;

the control unit is electrically connected with the control end of the first electronic switch and the control end of the second electronic switch;

when the control unit controls the first electronic switch to be switched off and simultaneously controls the second electronic switch to be switched on to the third end, the first metal strip generates 824M-880MHz frequency, and the first metal strip is coupled with the second metal strip to generate 2496M-2690MHz frequency and 2570-2620MHz frequency;

when the first electronic switch is turned off and the second electronic switch is turned on at the same time when the first end is turned on, the control unit controls the second electronic switch to be turned on at the third end, and the second metal strip generates 1920M-2170MHz and 1880M-1929 MHz;

further comprises:

a first antenna branch arranged on the antenna bracket and electrically connected with the feed point;

when the control unit controls the first electronic switch to be switched off and controls the second electronic switch to be simultaneously switched on at a first end and a second end, the second metal strip generates a frequency in an n78 frequency range, and the first antenna branch expands the frequency in the n78 frequency range to 3.3GHz-3.8GHz;

the second antenna branch is arranged on the antenna bracket and is grounded;

2. The terminal antenna system of claim 1, wherein the slot comprises a first slot, a second slot, and a third slot, wherein a metal border between the first slot and the second slot is the first metal strip, and wherein a metal border between the second slot and the third slot is the second metal strip.

3. The terminal antenna system of claim 2, wherein the first slot, the second slot, and the third slot have a width of 1-2mm;

4. A mobile terminal, characterized in that it comprises a terminal antenna system according to any of claims 1-3.