CN107171054B

CN107171054B - Antenna device and terminal

Info

Publication number: CN107171054B
Application number: CN201610131473.4A
Authority: CN
Inventors: 王霖川; 薛宗林; 熊晓峰
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2016-03-08
Filing date: 2016-03-08
Publication date: 2019-12-13
Anticipated expiration: 2036-03-08
Also published as: CN107171054A

Abstract

The present disclosure relates to an antenna device and a terminal, the device including: the antenna branch knot and the earphone jack module; the antenna branch knot is arranged at a position which is spaced from the earphone jack module by a preset distance, and is used for forming a resonance system by the antenna branch knot and a first conductive elastic sheet in the earphone jack module, the resonance frequency of the resonance system is the frequency of an antenna signal radiated outwards by an antenna at a terminal, the resonance system is used for radiating outwards the antenna signal, and the first conductive elastic sheet is a grounding end metal elastic sheet in the earphone jack module. The radiation of antenna signals can be enhanced through the coupling of the metal elastic sheet and the antenna branches in the earphone jack module, and the influence of metal in the terminal on the antenna signals is reduced.

Description

Antenna device and terminal

Technical Field

The present disclosure relates to the field of antenna technologies, and in particular, to an antenna apparatus and a terminal.

background

At present, with the liking of users to metal mobile phones and the requirement of mobile phone structural strength, the metal materials used on mobile phones are more and more, including metal frame, antenna boom, fuselage, etc., and the use of large area can metal enhancement cell-phone outward appearance and fuselage intensity, but can cause the influence to the radiation of antenna signal.

disclosure of Invention

To overcome the problems in the related art, the present disclosure provides an antenna device and a terminal.

According to a first aspect of the embodiments of the present disclosure, there is provided an antenna apparatus applied to a terminal, the apparatus including: the antenna branch knot and the earphone jack module;

the antenna branch section is arranged at a position spaced from the earphone jack module by a preset distance, and is used for forming a resonance system by the antenna branch section and a first conductive elastic sheet in the earphone jack module, the resonance frequency of the resonance system is the frequency of an antenna of the terminal for radiating antenna signals outwards, the resonance system is used for radiating the antenna signals outwards, and the first conductive elastic sheet is a grounding end metal elastic sheet in the earphone jack module.

Optionally, the specified portion of the end of the antenna stub surrounds the bottom and sides of the headphone jack module.

Optionally, the specified portion of the end of the antenna branch is L-shaped to surround the bottom and the side of the headphone jack module.

optionally, the length of the antenna stub, the width of the antenna stub, and the length of the first conductive dome are determined according to the inductive reactance of the resonant system;

The distance between the antenna branch and the first conductive elastic sheet is determined according to the capacitive reactance of the resonance system;

The inductive reactance and the capacitive reactance are determined according to a resonance frequency of the resonant system.

Optionally, one end of the antenna branch is connected to the feeding end, and the other end is an open end.

Optionally, the length of the antenna branch is the length of the antenna branch from the feeding end to the open-circuit end.

optionally, one end of the first conductive elastic sheet is grounded, and the other end of the first conductive elastic sheet is an open end.

Optionally, the length of the first conductive elastic sheet is the length of the first conductive elastic sheet from the ground end to the open end.

Optionally, the inductive reactance and the capacitive reactance are determined according to a resonant frequency of the resonant system and a resonant frequency formula, where the resonant frequency formula includes:

Wherein f represents the resonant frequency of the resonant system, L represents the inductive reactance, and C represents the capacitive reactance.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal including the antenna apparatus of the first aspect.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

The antenna branch sections are arranged at the positions, which are spaced by the preset distance, of the earphone jack module, the first conductive elastic sheets which are grounded in the antenna branch sections and the earphone jack module form a resonance system, the resonance frequency of the resonance system is the frequency of antenna signals radiated outwards by the antenna at the terminal, the resonance system can radiate the antenna signals outwards, the radiation of the antenna signals can be enhanced through the coupling of the metal elastic sheets and the antenna branch sections in the earphone jack module, and the influence of metal in the terminal on the antenna signals is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

fig. 1 is a block diagram of an antenna apparatus according to an exemplary embodiment;

fig. 2 is a block diagram illustrating another antenna arrangement according to an exemplary embodiment;

Fig. 3 is a block diagram illustrating a terminal according to an example embodiment.

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 implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

first, an application scenario related to the present disclosure is introduced, where the application scenario related to each embodiment of the present disclosure is a terminal, and at least one of structures such as a body, a frame, and an internal support of the terminal may be made of a metal material. In addition, the embodiments of the present disclosure are also applicable to terminals made of non-metal materials. The terminal may be an electronic device such as a smart phone, a tablet computer, a smart television, a smart watch, a Personal Digital Assistant (PDA), a portable computer, and the like.

A headphone jack module is provided on the terminal, which typically includes a plurality of conductive pins (pins), such as: the shell fragment of left sound channel, the shell fragment of right sound channel to and the shell fragment of ground connection (GND), wherein, the shell fragment of left sound channel is used for contacting the left sound channel contact of headphone plug when inserting when headphone plug, and the shell fragment of right sound channel is used for the right sound channel contact of headphone plug, and the monolithic of ground connection is used for contacting the GND contact of headphone plug. In addition, for the terminal with the conversation function, the earphone jack module also comprises an elastic sheet of a microphone, and the elastic sheet is used for contacting a microphone contact of an earphone plug. The plurality of conductive elastic pieces in the earphone jack module can be metal elastic pieces or elastic pieces made of other conductor materials.

Fig. 1 is a block diagram of an antenna apparatus according to an exemplary embodiment, which may be applied to a terminal described in the above application scenario, as shown in fig. 1, the antenna apparatus 100 includes: antenna stubs 110 and headphone jack modules;

The antenna stub 110 is disposed at a position spaced from the headphone jack module 120 by a preset distance d, and the first conductive elastic piece 121 in the antenna stub 110 and the headphone jack module 120 forms a resonant system, where the resonant frequency of the resonant system is the frequency of the antenna of the terminal radiating an antenna signal outwards, the resonant system is used for radiating the antenna signal outwards, and the first conductive elastic piece 121 is a ground end metal elastic piece in the headphone jack module 120.

the antenna device and the terminal provided by the embodiment of the disclosure, the antenna branch sections are arranged at the positions spaced by the preset distance from the earphone jack module, so that the antenna branch sections and the first conductive elastic sheet grounded in the earphone jack module form a resonance system, the resonance frequency of the resonance system is the frequency of an antenna outward radiation antenna signal of the terminal, the resonance system can radiate the antenna signal outward, the radiation of the antenna signal can be enhanced through the coupling of the metal elastic sheet and the antenna branch sections in the earphone jack module, and the metal in the terminal can influence the antenna signal.

fig. 2 is a block diagram illustrating another antenna apparatus according to an exemplary embodiment. The apparatus may be applied to the terminal described in the above application scenario, as shown in fig. 2, the antenna apparatus 200 includes: antenna stubs 210 and headset jack modules 220;

The antenna stub 210 is disposed at a position spaced from the earphone jack module 220 by a preset distance d, and the first conductive elastic piece 221 used in the antenna stub 210 and the earphone jack module 220 forms a resonant system, where the resonant frequency of the resonant system is the frequency of the antenna of the terminal radiating an antenna signal outwards, the resonant system is used for radiating the antenna signal outwards, and the first conductive elastic piece 221 is a ground end metal elastic piece in the earphone jack module 220.

The structure of the earphone jack module 220 and the function of the plurality of conductive elastic pieces have been described in the foregoing, and are not described in detail. Antenna branch 210 may be understood as one branch in the antenna of the terminal, and in general, the antenna of the mobile terminal may include a plurality of antenna branches. The antenna signal, i.e. the signal transmitted by the terminal for communication, is for example a terminal supporting a 3G network, the terminal is capable of radiating a 3G signal, and the frequency of the signal is determined, for example, the frequency band of WCDMA is 2100MHz, 1900MHz or 850 MHz. Thus, if the resonant system is used to radiate the 3G signal described above, the resonant frequency is 2100MHz, 1900MHz or 850 MHz.

Therefore, in order for the resonant system formed by the first conductive dome 221 in the headphone jack module 220 to radiate the antenna signal, it is necessary that the resonant frequency of the resonant system is consistent with the frequency of the antenna signal. Since the resonant frequency of a resonant system has the following relationship to the inductive and capacitive reactance of the resonant system:

Wherein f represents the resonant frequency of the resonant system, L represents the inductive reactance, and C represents the capacitive reactance. As can be seen from the above equation (1), when the resonant frequency of the resonant system is determined, the inductive reactance and the capacitive reactance of the resonant system can be determined according to the resonant frequency.

The length of the antenna stub 210, the width of the antenna stub 210, and the length of the first conductive dome 221 all affect the inductive reactance of the resonant system. In the antenna device 200, one end of the antenna branch 210 is connected to a feeding end, and the other end is an open end, where the length of the antenna branch 210 is the length of the antenna branch 210 from the feeding end to the open end; one end of the first conductive elastic piece 221 is grounded (not shown in the figure), the other end is an open end, the length of the first conductive elastic piece 221 is the length from the ground end to the open end of the first conductive elastic piece 221, the width of the antenna branch 210 (the diameter of the cylindrical antenna branch can be expressed) is used for expressing the thickness of the antenna branch 210 and the length of the antenna branch 210, the length of the first conductive elastic piece 221 is in direct proportion to the inductive reactance of the resonant system, and the width of the antenna branch 210 is in inverse proportion to the inductive reactance of the resonant system, that is, the longer the length of the antenna branch 210, the longer the length of the first conductive elastic piece 221 is, and the thinner the antenna branch 210 is, the higher the inductive reactance of the resonant system is.

The distance d1 between the antenna branch 210 and the first conductive elastic piece 221 affects the capacitive reactance of the resonant system, and the distance d1 is inversely proportional to the capacitive reactance of the resonant system, i.e., the larger the distance d1, the smaller the capacitive reactance of the resonant system.

Since the resonant frequency of the resonant system is equal to the frequency of the antenna signal, under the condition that the frequency of the antenna signal is known, according to the formula (1), the product of the inductive reactance and the capacitive reactance can be determined, so that the inductive reactance and the capacitive reactance can be determined as required, the length of the antenna branch 210, the width of the antenna branch 210, and the length of the first conductive elastic piece 221 can be determined according to the inductive reactance, and the distance d1 between the antenna branch 210 and the first conductive elastic piece 221 can be determined in a capacitive reactance manner. In addition, it is noted that, when the length of the antenna stub 210, the width of the antenna stub 210, the length of the first conductive elastic piece 221, and the distance between the antenna stub 210 and the first conductive elastic piece 221 are set, the internal structure and the component layout of the terminal can be considered, and the inductive reactance and the capacitive reactance determined before can be adjusted, as long as the product of the inductive reactance and the capacitive reactance is consistent with the product determined before, so that the resonant frequency of the resonant system formed by the antenna stub 210 and the earphone jack module 220 can be ensured to meet the requirement of the radiation signal, and the reasonable layout of the antenna stub 210 and the earphone jack module 220 in the terminal can be ensured.

Therefore, as the resonant system formed by the antenna branch 210 and the earphone jack module 220 can radiate the antenna signal outwards, a new position capable of radiating the signal is added to the terminal, and the radiation effect of the antenna signal can be enhanced for the terminal.

Optionally, defined portions of the ends of the antenna stubs 210 surround the bottom and sides of the headphone jack module 220. The bottom of the headphone jack module 220 is located at the opposite end of the opening of the headphone jack module 220, and the opening of the headphone jack module 220 is used for inserting a plug of a headphone. Furthermore, optionally, as shown in fig. 2, a predetermined portion (for example, a portion from a point a to a point c in fig. 2) of the end of the antenna branch 210 surrounds the bottom L1 and the side L2 of the headphone jack module 220 in an L shape, so that compared with the antenna apparatus shown in fig. 1, the coupling between the portion from a point a to a point b of the antenna branch 210 and the first conductive elastic piece 221 can be enhanced, and the signal radiation effect can be further enhanced.

The antenna device provided by the embodiment of the disclosure, through set up the antenna minor matters in the position with earphone jack module interval default distance, make the first electrically conductive shell fragment of antenna minor matters and earphone jack module ground connection constitute resonant system, and resonant system's resonant frequency is the frequency of the antenna external radiation antenna signal at terminal, thereby make this resonant system can the external radiation antenna signal, thereby can strengthen the radiation of antenna signal through the coupling of the metal shell fragment in the earphone jack module and antenna minor matters, can the metal in the terminal influences antenna signal.

Fig. 3 is a block diagram illustrating a terminal 300 according to an example embodiment. For example, the terminal 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Referring to fig. 3, the terminal 300 may include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input/output (I/O) interface 312, a sensor component 314, and a communication component 316. The communication component 316 may include the antenna device shown in fig. 1 or fig. 2.

The processing component 302 generally controls overall operation of the terminal 300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions. Further, the processing component 302 can include one or more modules that facilitate interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.

The memory 304 is configured to store various types of data to support operations at the terminal 300. Examples of such data include instructions for any application or method operating on the terminal 300, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 304 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power components 306 provide power to the various components of the terminal 300. The power components 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal 300.

The multimedia component 308 comprises a screen providing an output interface between the terminal 300 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the terminal 300 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 310 is configured to output and/or input audio signals. For example, the audio component 310 includes a Microphone (MIC) configured to receive an external audio signal when the terminal 300 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 304 or transmitted via the communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

The I/O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

the sensor assembly 314 includes one or more sensors for providing various aspects of status assessment for the terminal 300. For example, sensor assembly 314 may detect an open/closed state of terminal 300, the relative positioning of components, such as a display and keypad of terminal 300, the change in position of terminal 300 or a component of terminal 300, the presence or absence of user contact with terminal 300, orientation or acceleration/deceleration of terminal 300, and temperature changes of terminal 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 316 is configured to facilitate communications between the terminal 300 and other devices in a wired or wireless manner. The terminal 300 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the terminal 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An antenna device, applied to a terminal, the device comprising: the antenna branch knot and the earphone jack module;

The antenna branch knot is arranged at a position which is spaced from the side surface of a first conductive elastic sheet in the earphone jack module by a preset distance, and is used for forming a resonance system by the antenna branch knot and the first conductive elastic sheet in the earphone jack module, the resonance frequency of the resonance system is the frequency of an antenna signal radiated outwards by an antenna of the terminal, the resonance system is used for radiating the antenna signal outwards, and the first conductive elastic sheet is a grounding end metal elastic sheet in the earphone jack module.

2. The apparatus of claim 1, wherein a prescribed portion of the ends of the antenna stubs surround the bottom and sides of the headphone jack module.

3. The apparatus of claim 2, wherein the prescribed portion of the end of the antenna stub is L-shaped to surround the bottom and sides of the headphone jack module.

4. the apparatus of claim 1,

The length of the antenna branch, the width of the antenna branch and the length of the first conductive elastic sheet are determined according to the inductive reactance of the resonance system;

5. The device of claim 1, wherein the antenna branches have one end connected to the feeding end and the other end being an open end.

6. The apparatus of claim 5, wherein the length of the antenna stub is the length of the antenna stub from the feed end to the open end.

7. The device of claim 1, wherein the first conductive clip has one end grounded and the other end open.

8. The apparatus of claim 7, wherein the length of the first conductive spring tab is from a ground end to the open end.

9. The apparatus of claim 4, wherein the inductive reactance and the capacitive reactance are determined according to a resonant frequency of the resonant system and a resonant frequency formula, the resonant frequency formula comprising:

10. A terminal, characterized in that the terminal comprises:

The antenna device of any of claims 1-9.