CN218039806U

CN218039806U - Antenna structure and intelligent terminal

Info

Publication number: CN218039806U
Application number: CN202222620359.1U
Authority: CN
Inventors: 孙跃华
Original assignee: Shenzhen Taihengnuo Technology Co ltd
Current assignee: Shenzhen Taihengnuo Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-13
Anticipated expiration: 2032-09-29

Abstract

The application discloses antenna structure and intelligent terminal, this antenna structure includes: at least two antenna bodies with grounding ends, wherein the two antenna bodies are arranged adjacently; the circuit board is provided with a system ground and an antenna feed point; at least one ground connector connected between a ground terminal of at least one of the at least two antenna bodies and an antenna feed point of the circuit board; and the isolation device is arranged on the circuit board and connected between the system ground and the grounding connecting piece. The isolation of antenna can be promoted, and the radiation performance of antenna is improved.

Description

Antenna structure and intelligent terminal

Technical Field

The application relates to the technical field of antennas, in particular to an antenna structure and an intelligent terminal.

Background

The advent of the 5G era has brought users with high transmission, high rate and low latency experiences, while bringing about a doubling of the number of antennas. Due to the increase of the number of the antennas, the distance between the antennas in the limited space is short, so that the mutual interference between the antennas is more serious, the isolation of the antennas is reduced, and finally the radiation performance of the antennas is reduced.

Content of application

The application mainly aims to provide an antenna structure and an intelligent terminal, and aims to solve the problem of improving the radiation performance of the antenna structure.

To achieve the above object, the present application proposes an antenna structure, which includes:

at least two antenna bodies having a ground terminal, the two antenna bodies being adjacently disposed;

a circuit board, the circuit board being provided with a system ground and an antenna feed point;

at least one ground connector connected between at least one ground terminal of the at least two antenna bodies and the antenna feed point;

and the isolation device is arranged on the circuit board and is connected between the system ground and the grounding connecting piece.

Optionally, the isolation device is a capacitor, and the capacitor is disposed on the circuit board and close to the ground connector.

Optionally, the ground connector includes an elastic connector, one end of the elastic connector is fixed to the circuit board, and the other end of the elastic connector is in contact connection with the antenna main body;

the grounding connecting piece comprises a threaded connecting piece, one end of the threaded connecting piece is fixed on the circuit board, and the other end of the threaded connecting piece is in threaded connection with the antenna main body; or one end of the threaded connecting piece is fixed on the antenna main body, and the other end of the threaded connecting piece penetrates through the fixing hole of the circuit board and is in threaded connection with the locking piece;

the ground connector includes a flexible circuit board.

Optionally, the elastic connecting piece is a spring piece, and the spring piece is provided with a fixing part and a spring foot;

the fixing part is fixed on the circuit board, and the elastic pin abuts against the antenna body.

Optionally, the frequency bands of two adjacent antenna bodies are the same;

the frequency bands of two adjacent antenna bodies are at least partially overlapped;

and the frequency band difference value of the two adjacent antenna main bodies is within a preset frequency band range.

Optionally, the antenna structure comprises at least one of:

the metal frame is provided with a gap, and the gap divides the metal frame into at least two antenna main bodies;

the antenna main body and the metal frame are of an integral structure;

the antenna comprises a frame and a flexible circuit board fixed on the frame, wherein the antenna main body is arranged on the flexible circuit board.

Optionally, the antenna structure further includes a housing, and the antenna main body and the housing are an integral structure;

the antenna structure further comprises a flexible circuit board fixed on the shell, and the antenna main body is arranged on the flexible circuit board.

Optionally, the antenna structure further comprises a ground plane in electrical connection with the system of the circuit board.

Optionally, the antenna body comprises any one of a triple play antenna, a WIFI MIMO antenna, a Sub6G MIMO, or a combination of at least two thereof.

The application also provides an intelligent terminal, which comprises the antenna structure.

This application adds ground connection connecting piece and isolating device with the original muscle position department between the two antenna main parts to through ground connection connecting piece and isolating device with the antenna main part under to the mainboard, but the indirect ground plate to intelligent terminal is favorable to keeping apart the coupling current between the two antenna main parts. The application enhances the isolation between the two antenna bodies by adding the grounding connecting piece and the isolating device. The isolation between two adjacent limbs on the spatial position is good, and the efficiency of the two antenna main bodies is improved. The ground connection connecting piece is used for connecting the circuit board at the original rib position, so that the ground connection connecting piece is required to be connected with the ground plate, the width of the rib position of the antenna main body can be as narrow as possible, the same environmental frequency is low, the size of the antenna main body is reduced, and the space of the antenna main body can be saved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic hardware structure diagram of a mobile terminal implementing various embodiments of the present application;

fig. 2 is a communication network system architecture diagram according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an implementation of an antenna structure provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of another implementation of an antenna structure according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a further implementation of an antenna structure provided in an embodiment of the present application;

fig. 6 is a graph comparing the return loss (S11) for the two antenna body alloy-down and 1.8 pF-down in the antenna structure of the present application;

fig. 7 is a graph comparing the return loss (S11) for the two antenna body alloy-down and 1.8 pF-down in the antenna structure of the present application;

fig. 8 is a graph comparing the isolation (S21) of the two antenna bodies under alloy and under 1.8pF in the antenna structure of the present application;

FIG. 9 is a graph of efficiency versus efficiency for two cases, alloyed under and 1.8pF under, for one of two antenna bodies in an antenna structure of the present application;

fig. 10 is a graph comparing the efficiency of the antenna structure of the present application for the case where the other of the two antenna bodies is alloyed with ground and 1.8pF ground.

The reference numbers illustrate:

the implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

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, the element defined by the phrases "comprising a component of 8230; \8230;" comprising a component of this specification does not exclude the presence of additional similar elements in processes, methods, articles, or apparatus that comprise the same component, features, or elements, which may have the same meaning in different embodiments of the application, and optionally may have different meanings that are determined by their interpretation in the specific embodiment or by their context in further combination with the specific embodiment.

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 only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if," as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030when" or "in response to a determination," depending on the context. Also, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, items, species, and/or groups thereof. The terms "or," "and/or," "including at least one of the following," and the like, as used herein, are to be construed as inclusive or mean any one or any combination. For example, "includes at least one of: A. b, C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C ", by way of further example," a, B or C "or" a, B and/or C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C'. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

The words "if", as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030, when" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrase "if determined" or "if detected (a stated condition or event)" may be interpreted as "upon determining" or "in response to determining" or "upon detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)", depending on the context.

It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning in themselves. Thus, "module", "component" or "unit" may be used mixedly.

The smart terminal may be implemented in various forms. For example, the smart terminal described in the present application may include mobile terminals such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and fixed terminals such as a Digital TV, a desktop computer, and the like.

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

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, wiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, uplink data is transmitted to the base station. Typically, 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 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), 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 duplex-Long Term Evolution), TDD-LTE (Time Division duplex-Long Term Evolution, time Division Long Term Evolution), 5G, and so on.

WiFi belongs to a short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send emails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and can be omitted entirely as needed within the scope 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 call 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 related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

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 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 graphic 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 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone 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 audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor that may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the gesture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, the description is omitted here.

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 (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 generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, 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, can collect touch operations of a user (e.g., operations of a user on the touch panel 1071 or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory) thereon or nearby 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. Optionally, the touch detection device detects a touch direction of a user, detects a signal caused by a touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Optionally, 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, a mouse, a joystick, etc., and the like, without limitation.

Alternatively, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated 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 is connected to the 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 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 external devices and transmit the received input to one or at least two elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a program storage area and a data storage area, and optionally, the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, and the like) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the 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, performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby integrally monitoring the mobile terminal. Processor 110 may include one or at least two processing units; preferably, the processor 110 may integrate an application processor and a modem processor, optionally, the application processor mainly handles operating systems, user interfaces, application programs, etc., and the modem processor mainly 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 supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

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

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present disclosure, where the communication Network system is an LTE system of a universal mobile telecommunications 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) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Optionally, the UE201 may be the terminal 100 described above, and details are not described here.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Alternatively, the eNodeB2021 may be connected with other enodebs 2022 through a backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.

The 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 (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. Optionally, the MME2031 is a control node that handles signaling between the UE201 and the EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow 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, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present application is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G, and future new network systems (e.g. 6G), and the like.

Based on the above mobile terminal hardware structure and communication network system, various embodiments of the present application are provided.

First embodiment

The application provides an antenna structure, and the antenna structure can be applied to the intelligent terminal of the embodiment.

Referring to fig. 3 to 5, in an embodiment of the present application, the antenna structure includes:

at least two antenna bodies 10 having a ground terminal 11, the two antenna bodies 10 being adjacently disposed;

a circuit board 20, said circuit board 20 being provided with a system ground 21 and an antenna feed point 22;

at least one ground connector 30 connected between the ground terminal 11 of at least one of the at least two antenna bodies 10 and the antenna feed point 22 of the circuit board 20;

an isolation device 40 disposed on the circuit board 20, the isolation device 40 being connected between the system ground 21 and the ground connector 30.

In the present embodiment, the circuit board 20 may be a Printed circuit board 20 (abbreviated as circuit board 20), the circuit board 20 may be made of FR-4 material, and the circuit board 20 may be made of a composite material formed by epoxy resin, a filler and glass fiber. The circuit board 20 may be a main board of the intelligent terminal, a radio frequency circuit is further disposed on the main board, the antenna main body 10 is further provided with a feeding end 12, an antenna feeding point is further disposed on the corresponding main board, and the antenna main body 10 is electrically connected to the radio frequency circuit on the main board through the feeding end 12 and the ground feeding end, so as to implement radiation and reception of radio frequency signals.

The antenna structure can be applied to an intelligent terminal, the number of the antenna main bodies 10 is different according to different application requirements of functions to be realized by the intelligent terminal, and the number of the antenna main bodies 10 in the embodiment can be two or more. Optionally, in this embodiment, the two antenna bodies 10 may be disposed on a frame of the smart terminal at intervals, or the two antenna bodies 10 may be disposed on a housing of the smart terminal, and the ground terminals 11 of the two antenna bodies 10 may be connected to the system ground 21 disposed on the circuit board 20 through one ground connector 30, or one of the two antenna bodies 10 is connected to the system ground 21 disposed on the circuit board 20 through one ground connector 30. The isolation device 40 is arranged on one of the two antenna bodies 10, and at least one of the two antenna bodies 10 does not need to be directly connected with the ground plate 400 (main ground) of the intelligent terminal, so that the width of the lower rib of the antenna can be set to be narrower, and the size of the antenna structure is favorably reduced.

The two antenna bodies 10 are arranged adjacent to each other in space, the radiation frequency bands of the two antenna bodies 10 may be the same or similar, that is, the two radiation frequency bands may have overlapping frequency bands, or the difference between the two radiation frequency bands is small, for example, tens of MHz and hundreds of MHz are different, because the spatial distances of the antennas of the two frequency bands are similar, the radiation frequency bands are the same or similar, which may easily cause the current of one antenna body 10 to couple to the region of another antenna body 10, which may cause mutual interference between the antennas, and the isolation is poor, and finally the radiation performance of the antenna may be reduced. For this reason, the present embodiment utilizes the isolation effect of the isolation device 40, the isolation device 40 is disposed between the antenna main body 10 and the system ground 21 of the circuit board 20, and the isolation device 40 is connected in series between the ground terminal 11 of the antenna main body 10 and the system ground 21 of the circuit board 20, so as to perform a filtering effect, and isolate the coupling current between the two antenna main bodies 10. The isolation device 40 may alternatively be implemented using a capacitor or an inductor, or a combination of a capacitor and an inductor.

Optionally, in this embodiment, at an original rib position between the two antenna main bodies 10 (the position is that the antenna main body 10 is directly connected to the ground plate 400 of the smart terminal, so that the antenna main body 10 is located below the rib position), the ground connector 30 is arranged to electrically connect the antenna main body 10 and the circuit board 20, and the isolating device 40 is arranged to enable the antenna main body 10 to be located below the circuit board 20, where the current directions of the antenna main body 10, the circuit board 20 and the ground plate 400 of the smart terminal are: the current flows from the antenna body 10, through the isolation device 40, down to the system ground 21 of the circuit board 20 through the isolation device 40, and then is output to the ground plate 400 of the intelligent terminal from the system ground 21 of the circuit board 20.

Compared with the two antenna main bodies 10 limited by the volume of the intelligent terminal, the two antenna main bodies 10 are arranged adjacently and are relatively close to each other, and the close distance between the two antenna main bodies 10 enables the antennas to excite strong surface wave coupling and space induction coupling, so that the working frequency band, the efficiency and other performances of the antennas are deteriorated. Based on this, in the present application, the grounding connector 30 and the isolation device 40 are added at the original rib position between the two antenna main bodies 10, and the antenna main body 10 is grounded to the main board through the grounding connector 30 and the isolation device 40 instead of being directly grounded to the ground plate 400 of the intelligent terminal, which is beneficial to isolating the coupling current between the two antenna main bodies 10. The present application provides enhanced isolation between the two antenna bodies 10 by adding the ground connection 30 and the isolation device 40. The isolation between two adjacent limbs in the spatial position is good, and the efficiency of the two antenna main bodies 10 is improved. According to the antenna, the circuit board 20 is connected with the original rib position by the grounding connecting piece 30, so that the grounding plate 400 is required to be connected, the width of the rib position of the antenna main body 10 can be as narrow as possible, the same environmental frequency is low, the size of the antenna main body 10 is reduced, and the space of the antenna main body 10 can be saved.

Optionally, the isolation device 40 is a capacitor, and the capacitor is disposed on the circuit board 20 near the ground connector 30. Adopt the electric capacity to be the ground muscle under the equivalence, utilize big electric capacity to be the characteristic of the state of route for the high frequency, the size of the structure electric capacity appearance value of making the antenna can be according to the frequency channel of two antennas, the position that sets up of two antenna main parts 10, relative distance between two antenna main parts 10, and set up according to the experimental conditions of reality, electric capacity appearance value is big more, isolation between two antennas is better, alloy isolation muscle position between this embodiment will two antenna main parts 10, change into ground connection spare 30, ground connection spare 30's one end is connected with antenna main part 10 electricity, the other end passes through the mode that the electric capacity device went to the ground, can promote isolation and the efficiency of two antennas. This embodiment can be chosen to have a capacitance greater than 1.8pF, and the isolation between two closely spaced antenna bodies 10 is-9 dB when isolation is performed using a capacitance of 1.8 pF. In this embodiment, the actual effect of the alloy ground plate with the width of 2.4mm and the ground connection member 30 passing through the capacitance of 1.8pF is selectively compared by using a model and data comparison of simulation of the antenna body 10 passing through the alloy ground plate by the same group of antenna bodies 10 (i.e. two adjacent antenna bodies 10) and the antenna body 10 passing through the capacitance and the ground connection member 30 passing through the ground plate. Referring to fig. 6 to 10, fig. 6 is a comparison of return loss (S11) of the two cases of the earth under the antenna ANT1 alloy and the earth under 1.8pF, and the isolation can be determined by the return loss, and the smaller the return loss, the higher the isolation. The simulation can find that the bandwidth of the waveform is narrowed, and the resonance is slightly shifted; fig. 7 is a comparison of return loss (S11) for the two cases of under alloy antenna ANT2 and under 1.8pF, where a narrower bandwidth of the waveform and a slight shift in resonance are observed; fig. 8 is a comparison of the isolation (S21) between the two cases of the antenna ANT1 and ANT2 alloy and 1.8pF, and it is found that the isolation becomes better (from-6 to-9 dB below) in the case of 1.8pF, fig. 9 and fig. 10 are a comparison of the efficiency between the two cases of the antenna ANT1 and ANT2 alloy and 1.8pF, and it is found that the efficiency improvement of ANT1 and ANT2 is significant (ANT 1 is improved from-7 dB to-3.2db, ANT2 is improved from-4.2 dB to-2.6 dB) in the case of 1.8pF, and this measure has a significant effect on the improvement of the isolation and efficiency of the antenna in the similar frequency band of the two antennas.

Alternatively, the isolation device 40 may be implemented by using an inductor, and the larger the inductance value, the longer the trace length between the antenna body 10 and the system ground 21 of the circuit board 20, and the size of the inductance value is selected to increase the isolation between the antennas.

Optionally, the grounding connector 30 includes an elastic connector, one end of the elastic connector is fixed to the circuit board 20, and the other end of the elastic connector is in contact connection with the antenna main body 10;

optionally, the grounding connector 30 includes a threaded connector, one end of the threaded connector is fixed to the circuit board 20, and the other end of the threaded connector is in threaded connection with the antenna main body 10; or, one end of the threaded connector is fixed to the antenna body 10, and the other end of the threaded connector penetrates through the fixing hole of the circuit board 20 and is in threaded connection with the locking member;

optionally, the ground connector 30 includes a flexible circuit board 20.

Optionally, the elastic connecting member 30 is a spring plate, and the spring plate has a fixing portion and a spring leg;

the fixing portion is fixed on the circuit board 20, and the elastic pin abuts against the antenna main body 10.

In this embodiment, the antenna main body 10 may be disposed on a frame or a rear case of the intelligent terminal, or directly formed by the frame or the rear case, the elastic sheet is fixed on the circuit board 20 through the fixing portion, and is electrically connected to the isolating device 40 through a trace disposed on the circuit board 20, and an elastic pin of the elastic sheet is connected to the grounding end 11 of the antenna main body 10 in an abutting manner, so that the grounding end 11 of the antenna main body 10 forms a whole with the elastic sheet, the isolating device 40 and the system ground 21 of the circuit board 20. The elastic legs are connected to the antenna body 10, and the path length of the current can be adjusted by adjusting the shape, length, etc. of the elastic pieces, thereby reducing interference between the antenna bodies 10. Optionally, the isolation device 40 is disposed between the antenna bodies 10, and the isolation device 40 is matched to achieve the effect of increasing the path length of the current passing through.

Alternatively, when the screw thread connector is a bolt or a screw, a stud is disposed on the metal frame 300 or the metal housing, a fixing hole is disposed on the circuit board 20, and the circuit board 20 is locked to the metal frame 300 or the metal housing by the screw or the screw, for example, when the metal body is the metal frame 300, the metal frame 300 may have a partially overlapped region with the circuit board 20, and a grounding hole, i.e., the grounding terminal 11, is disposed in the overlapped region, and the grounding hole is connected to the isolation device 40 on the circuit board 20 by the screw or the screw. The ground terminal 11 of the antenna body 10 is integrally formed with the screw, the isolation device 40 and the system ground 21 of the circuit board 20 by electrically connecting the trace arranged on the circuit board 20 with the isolation device 40 and connecting the screw with the stud of the antenna body 10 by means of screw thread.

Optionally, the antenna body 10 may also be electrically connected through an FPC or other flexible connecting member, one end of the flexible connecting member is fixed to the circuit board 20, and the other end of the flexible connecting member may be electrically connected through a fastener, a conductive adhesive, or the like. The FPC is electrically connected to the ground terminal 11 of the antenna main body 10 by a trace provided on the circuit board 20 electrically connected to the isolation device 40, so that the ground terminal 11 of the antenna main body 10 is integrally formed with the FPC, the isolation device 40 and the system ground 21 of the circuit board 20.

Second embodiment

Referring to fig. 3 to fig. 5, in the embodiment of the present application, the frequency bands of two adjacent antenna bodies 10 may be at least one of the following:

the frequency bands of two adjacent antenna bodies 10 are the same;

the frequency bands of two adjacent antenna bodies 10 have at least partially overlapped frequency bands;

the frequency band difference value of two adjacent antenna main bodies 10 is within a preset frequency band range.

Optionally, the antenna body 10 includes any one of three-in-one antenna, WIFI MIMO antenna, sub6GMIMO antenna, or at least two combinations thereof.

Referring to fig. 3, in this embodiment, according to the different applications of the intelligent terminal and the different functional requirements of the intelligent terminal, the intelligent terminal may only be provided with one antenna main body 10, or may select a three-in-one antenna, a WIFI MIMO antenna, and a Sub6G MIMO antenna to perform two or three combinations. Of course, in other embodiments, the antenna main body 10 is not limited to the three antennas, and may also be other antennas, and the spatial positions of the two antenna main bodies 10 are adjacent, and the frequency bands are the same or similar, and the grounding connection member 30 and the isolation device 40 of the present embodiment can be used to mount the antenna main body 10 below the ground, which is not limited herein. The frequency bands of two adjacent antenna bodies 10 may be completely the same, or have partial overlap, or the frequency bands are close, that is, the frequency band difference is within the preset frequency band range.

Referring to fig. 4, one antenna body 10 of two adjacent antenna bodies 10 may be a Sub6GMIMO, the Sub6G MIMO antenna has N40& & N77/78/79 frequency bands, the other antenna body 10 may be a WIFI MIMO antenna, when the two antenna bodies 10 are closely arranged in space, the N40 (2300-2400 MHz) and the WIFI2.4G (2400-2500 MHz) frequency bands are close, so that the two antenna bodies 10 may affect each other, and this embodiment may be selected in a manner that any one of the Sub6G MIMO antenna and the WIFI MIMO antenna is connected to the system ground 21 of the circuit board 20 by using the ground connector 30 and the isolation device 40. Or the ground terminals 11 of the Sub6G MIMO antenna and the WIFI MIMO antenna are connected to the system ground 21 of the circuit board 20 by means of the ground connector 30 and the isolation device 40.

Referring to fig. 5, the three-in-one antenna may be a combined antenna of WIFI, GPS and bluetooth, and may be used for positioning navigation and wireless communication. Optionally, the two adjacent antenna bodies 10 may be a GPS L1 antenna and a GPS L5 antenna in a three-in-one antenna, the frequency band of the GPS L1 antenna is 1575mhz, the frequency band of the GPS L5 antenna is 1176MHz, the frequency band difference between the two antennas is only several hundred MHz, and the frequency bands of the two adjacent antenna bodies 10 are close, so that the two antenna bodies 10 may affect each other, and in this embodiment, any one of the GPS L1 antenna and the GPS L5 antenna may be connected to the system ground 21 of the circuit board 20 by using the ground connection component 30 and the isolation component 40. Or the system ground 21 of the circuit board 20 is connected between the ground terminals 11 of both the Sub6G GPS L1 antenna and the GPS L5 antenna and the system by means of the ground connector 30 and the isolation device 40.

Alternatively, the two adjacent antenna bodies 10 may be the Sub6G MIMO antenna, where the frequency band of the antenna ANT1 (N77/78/79) is 3300-5000MHz and the frequency band of the antenna ANT2MIMO (N77/78/79) is also 3300-5000MHz, the frequency bands of the two antenna bodies 10 are the same, and the frequency bands of the two adjacent antenna bodies 10 are the same, so that the two antenna bodies 10 may affect each other, and this embodiment may be selected such that any one of the antenna ANT1 (N77/78/79) and the antenna ANT2MIMO (N77/78/79) is connected to the system ground 21 of the circuit board 20 by using the ground connector 30 and the isolation device 40. Or the ground terminal 11 of both the antenna ANT2MIMO (N77/78/79) and the system ground 21 of the circuit board 20 are connected by means of the ground connector 30 and the isolation device 40.

Third embodiment

Referring to fig. 3 to 5, in the embodiment of the present application, the structure of the antenna structure includes at least one of the following:

the antenna further comprises a metal frame 300, wherein a gap 300a is formed in the metal frame 300, and the metal frame 300 is divided into at least two antenna main bodies 10 by the gap 300 a;

the antenna main body 10 and the metal frame 300 are of an integral structure;

the antenna structure further comprises a frame and a flexible circuit board 20 fixed on the frame, and the antenna main body 10 is arranged on the flexible circuit board 20.

In this embodiment, the metal bezel 300 may serve as an external appearance of the mobile terminal, such as a side bezel and a partial or complete rear case of the mobile terminal. The slot 300a may be used for tuning, tuning being done according to the change in the width of the slot 300 a. Gap 300a can be used for distinguishing different antennas, for example when trinity antenna, WIFI MIMO antenna, sub6G MIMO antenna etc. all adopt metal frame 300 to realize, the quantity of gap 300a can set up to a plurality ofly for distinguish trinity antenna, WIFI MIMO antenna, sub6G MIMO antenna etc.. Optionally, the slot 300a is filled with an isolation material, and a nano injection molding technology may be adopted to isolate and distinguish different antennas. The antenna main body 10 can be directly implemented by the metal frame 300 of the intelligent terminal, and can also be implemented by fixing the FPC (flexible circuit board 20) antenna on the frame of the intelligent terminal, and can also be directly manufactured on the metal frame 300 by using LDS (laser etching) process molding, so that the antenna main body 10 and the metal frame 300 are designed into an integral structure. When the FPC antenna is connected to the metal frame 300, the FPC antenna may be locked to the metal frame 300 by using a glue or the like, or the FPC antenna may be locked to the metal frame 300 by using an electric welding steel sheet.

Fourth embodiment

Referring to fig. 3 to 5, in the embodiment of the present application, the antenna structure further includes a housing (not shown), and the antenna main body 10 and the housing are an integral structure;

and/or, the antenna structure further includes a housing and a flexible circuit board 20 fixed on the housing, and the antenna main body 10 is disposed on the flexible circuit board 20.

In this embodiment, the casing can be plastic housing, also can be metal casing, and plastic housing includes shell body and antenna fixed part for fixed casing, intelligent terminal's frame, circuit board 20 etc. are fixed in shell body. The circuit board 20 and the antenna main body 10 may be electrically connected through a spring plate, an FPC, or by using a screw, for example, a fixing hole may be formed in the circuit board 20, a stud may be disposed on the housing, the screw may penetrate through the fixing hole to lock the circuit board 20 to the housing, so as to achieve the fixed connection of the circuit board 20, and the screw may abut against an antenna disposed on the housing, thereby achieving the electrical connection. The housing may include a front housing and a rear housing, and the FPC antenna may be fixed to the rear housing, or the rear housing may be a metal housing, and directly formed on the rear housing by an LDS process, so that the antenna body 10 and the housing are designed as an integrated structure.

Optionally, the antenna structure further comprises a ground plate 400, the ground plate 400 being electrically connected to the system ground 21 of the circuit board 20. The ground plate 400 may be disposed between the circuit board 20 and the display screen of the smart terminal, the ground plate 400 serves as a main ground of the smart terminal, and the antenna structure may be directly connected to the ground plate 400 by using an under-ground isolation rib, or indirectly connected to the ground plate 400 by using the ground connector 30, the isolation device 40, and the system ground 21 of the circuit board 20. In a 5G network terminal product, the layout of the antennas is compact, the width of each rib position given to each antenna is narrow, the two antennas are closely adjacent, and the two antennas have frequency bands with similar frequencies, for example, the antenna Ant1 comprises 2300-2400MHz, the antenna Ant2 comprises 2400-2500MHz, and the two frequency bands are adjacent. Due to the limitation of space, the width of the upper ground isolation rib between the two antennas is at most 2mm, if the width can be more than 6mm, the loop is considered to be fully arranged on the ground, the current coupled to Ant1 from Ant2 can return to the ground through the upper ground isolation rib, and the size of the terminal is limited, so that the width of the loop can be more than 6mm, and the isolation effect of the two antenna main bodies 10 in the same frequency band through the lower ground isolation rib is not obvious.

In the embodiment, any one or two of the antenna main bodies 10 are indirectly connected with the grounding plate 400 in a mode of adopting the grounding connector 30, the isolating device 40 and the systematic ground 21 of the circuit board 20, so that the current of Ant1 is isolated from affecting Ant2, the isolation effect of the two antenna main bodies 10 is better, and the problems of larger mutual interference and poorer performance of the two adjacent antenna main bodies 10 can be solved.

The application also provides an intelligent terminal, the intelligent terminal comprises the antenna structure.

The detailed structure of the antenna structure can refer to the above embodiments, and is not described herein again; it can be understood that, because the antenna structure is used in the intelligent terminal of the present application, the embodiment of the intelligent terminal of the present application includes all technical solutions of all embodiments of the antenna structure, and the achieved technical effects are also completely the same, and are not described herein again.

The intelligent terminal further comprises a terminal display screen, a terminal main board, a shell and a frame, the shell, the display screen and the frame enclose a containing cavity which forms the intelligent terminal, the circuit board 20, the battery board and the like are contained in the containing cavity, and the frame is used for supporting and fixing the terminal display screen embedded in the shell. The antenna structure of this embodiment can set up on the casing, also can set up on the frame, perhaps the part sets up in the casing, and the part sets up on the frame, and this application is suitable for and is applicable to the intelligent terminal that has metal frame 300 such as cell-phone, wrist-watch, bracelet, pad and notebook, certainly does not restrict to metal frame 300 yet, also is applicable to and adopts FPC or LDS technology to form antenna main part 10 on metal casing, as long as utilize similar ground connection processing mode can.

In the present application, the same or similar term concepts, technical solutions and/or application scenario descriptions will be generally described only in detail at the first occurrence, and when the description is repeated later, the detailed description will not be repeated in general for brevity, and when understanding the technical solutions and the like of the present application, reference may be made to the related detailed description before the description for the same or similar term concepts, technical solutions and/or application scenario descriptions and the like which are not described in detail later.

In the present application, each embodiment is described with an emphasis on the description, and reference may be made to the description of other embodiments for parts that are not described or recited in any embodiment.

The technical features of the technical solution of the present application may be arbitrarily combined, and for brevity of description, all possible combinations of the technical features in the embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present application should be considered as being described in the present application.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a controlled terminal, or a network device) to execute the method of each embodiment of the present application.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all the equivalent structures or equivalent processes that can be directly or indirectly applied to other related technical fields by using the contents of the specification and the drawings of the present application are also included in the scope of the present application.

The above description is only an alternative embodiment of the present application, and not intended to limit the scope of the present application, and all modifications, equivalents, and other technical fields that can be directly or indirectly applied to the present application and the claims of the present application are included in the scope of the present application.

Claims

1. An antenna structure, comprising:

at least two antenna bodies with grounding ends, wherein the two antenna bodies are arranged adjacently;

a circuit board provided with a system ground and an antenna feed point;

2. The antenna structure of claim 1, wherein the isolation device comprises a capacitor disposed on the circuit board proximate to the ground connection.

3. The antenna structure of claim 1, comprising at least one of:

the grounding connecting piece comprises an elastic connecting piece, one end of the elastic connecting piece is fixed on the circuit board, and the other end of the elastic connecting piece is in contact connection with the antenna main body;

the ground connector includes a flexible circuit board.

4. The antenna structure of claim 3, wherein the resilient connecting member comprises a spring plate having a fixing portion and a spring leg;

the fixing part is fixed on the circuit board, and the elastic pin abuts against the antenna main body.

5. The antenna structure according to any of claims 1 to 4, characterized by comprising at least one of:

the frequency bands of two adjacent antenna main bodies are the same;

frequency bands of two adjacent antenna bodies are at least partially overlapped;

and the frequency band difference value of two adjacent antenna main bodies is within a preset frequency band range.

6. The antenna structure according to any of claims 1 to 4, characterized in that it comprises at least one of the following:

the antenna main body and the metal frame are of an integral structure;

7. The antenna structure according to any one of claims 1 to 4, characterized in that the antenna structure further comprises a housing, the antenna body being of unitary construction with the housing; and/or the presence of a gas in the gas,

8. The antenna structure according to any one of claims 1 to 4, characterized in that the antenna structure further comprises a ground plate, which is electrically connected with a system electrical of the circuit board.

9. The antenna structure according to any of claims 1 to 4, characterized in that the antenna body comprises any one of a triple-play antenna, a WIFI MIMO antenna, a Sub6G MIMO or a combination of at least two.

10. A smart terminal, characterized in that the smart terminal comprises an antenna arrangement according to any of claims 1 to 9.