CN111262046B

CN111262046B - Antenna circuit and mobile terminal

Info

Publication number: CN111262046B
Application number: CN202010063336.8A
Authority: CN
Inventors: 陈卫; 陈志伟; 罗伟东
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2021-06-15
Anticipated expiration: 2040-01-20
Also published as: CN111262046A

Abstract

The application discloses antenna circuit and mobile terminal, antenna circuit includes: a plurality of spring feet; a tuning switch connected to each spring leg of the plurality of spring legs; the radio frequency chip is connected with each elastic pin; the metal floor is connected with each elastic foot; and the patch positions are arranged among the tuning switch, the radio frequency chip, the metal floor and each elastic pin, so that a patch element is pasted on each patch position. Through paster position paster component in the difference, and then can change the effect of each bullet foot, avoid making the PCB board again, improve the debugging progress.

Description

Antenna circuit and mobile terminal

Technical Field

The application relates to the field of communication, in particular to an antenna circuit and a mobile terminal.

Background

In the design and development process of electronic products such as mobile phones, each antenna elastic pin (namely a communicating elastic piece of a circuit on a PCB and an antenna FPC) used by an antenna is provided with a switch point, a feed point, a grounding point and a parasitic point. Before the mold is opened or the PCB is manufactured, the positions of the elastic pins are required to be fixed for drawing lines on the PCB and designing an antenna framework.

However, if the position of each functional spring foot needs to be adjusted or exchanged in the debugging process, the PCB needs to be reworked, even the die is re-opened, the material preparation period is very long, and the debugging progress is seriously influenced.

Disclosure of Invention

The embodiment of the application provides an antenna circuit, can avoid making the PCB board again, improves the debugging progress.

An embodiment of the present application provides an antenna circuit, including:

a plurality of spring feet;

a tuning switch connected to each spring leg of the plurality of spring legs;

the radio frequency chip is connected with each elastic pin;

the metal floor is connected with each elastic foot;

and the patch positions are arranged among the tuning switch, the radio frequency chip, the metal floor and each elastic pin, so that a patch element is pasted on each patch position.

In the antenna circuit described in this application, the plurality of elastic pins include first elastic pin and second elastic pin, the patch element patch is in the tuning switch with on the patch position between the first elastic pins, so that the first elastic pin is as the switch elastic pin, the patch element patch is in the radio frequency chip with on the patch position between the second elastic pin, so that the second elastic pin is as the feed point elastic pin.

In the antenna circuit described in the present application, the plurality of spring pins further include a third spring pin, and the patch element is attached to the metal floor and to a patch position between the third spring pins, so that the third spring pin serves as a grounding spring pin.

In the antenna circuit described in this application, the antenna circuit further includes a parasitic antenna, and the plurality of spring pins further include a fourth spring pin, and the patch element patch is in the metal floor with on the patch position between the fourth spring pins, so that the fourth spring pin is as the parasitic spring pin.

In the antenna circuit described in the present application, the patch element includes:

one or more of a chip resistor, a chip capacitor and a chip inductor.

In the antenna circuit described in the present application, the resistance value of the chip resistor is 0 ohm.

In the antenna circuit described herein, the patch element is a 0201 package or 0402 package.

In the antenna circuit described in the present application, the package size and power relationship of the patch element is 201w or 1.

16w

In the antenna circuit of the present application, the tuning switch and the rf chip are connected to the same pogo pin.

The embodiment of the application also provides a mobile terminal which comprises the antenna circuit.

The antenna circuit provided by the embodiment of the application comprises: a plurality of spring feet; a tuning switch connected to each spring leg of the plurality of spring legs; the radio frequency chip is connected with each elastic pin; the metal floor is connected with each elastic foot; and the patch positions are arranged among the tuning switch, the radio frequency chip, the metal floor and each elastic pin, so that a patch element is pasted on each patch position. Through paster position paster component in the difference, and then can change the effect of each bullet foot, avoid making the PCB board again, improve the debugging progress.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a first structure of an antenna circuit according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a second structure of an antenna circuit according to an embodiment of the present application.

Fig. 3 is a schematic diagram of a third structure of an antenna circuit according to an embodiment of the present application.

Fig. 4 is a schematic diagram of a fourth structure of an antenna circuit according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic view of a first structure of an antenna circuit according to an embodiment of the present disclosure. The antenna system includes:

a plurality of spring legs 10;

a tuning switch 20 connected to each of the plurality of pogo pins;

the radio frequency chip 30 is connected with each elastic pin;

a metal floor 40 connected to each of the elastic legs;

and a plurality of patch positions arranged among the tuning switch 20, the radio frequency chip 30, the metal floor 40 and each elastic pin, so that patch elements are arranged on the patch positions for being pasted.

Specifically, taking fig. 1 as an example, fig. 1 has 4 pogo pins 101 to 104 and 14 die sites 501 to 514. In order to realize the switching among any elastic pins, it is necessary to ensure that each elastic pin of the plurality of elastic pins 10 can be connected with the tuning switch 20, the radio frequency chip 30 and the metal floor 40, and a patch position is arranged between the elastic pins, so that a patch element is attached to the patch position, and further, the switching of the functions of the elastic sheet is realized.

In some embodiments, as shown in fig. 2, fig. 2 is a second schematic structural diagram of an antenna circuit provided in the present embodiment, a plurality of elastic pins 10 includes a first elastic pin 101 and a second elastic pin 102, the patch element 60 is attached to an attachment position (501-503) between the tuning switch 20 and the first elastic pin 101, so that the first elastic pin 101 serves as a switch elastic pin, and the patch element 60 is attached to an attachment position (512-514) between the rf chip 30 and the second elastic pin 102, so that the second elastic pin 102 serves as a feed point elastic pin.

In some embodiments, the plurality of spring pins 10 further comprises a third spring pin 103, and the patch element is attached to the patch site 506 between the metal floor 40 and the third spring pin 103, so that the third spring pin 103 serves as a grounding spring pin.

In some embodiments, the antenna circuit further comprises a parasitic antenna, the plurality of spring pins further comprises a fourth spring pin 104, and the patch element 60 is attached to the attachment site (509 and 510) between the metal floor 40 and the fourth spring pin 104, such that the fourth spring pin 104 acts as a parasitic spring pin. The rest of the patch bits (504, 505, 507, 508, 513) are not subjected to the patch, i.e., the disconnection process.

At this time, the spring feet are sequentially from left to right: switch pin, grounding pin, parasitic pin, and feed point pin.

In some embodiments, as shown in fig. 3, fig. 3 is a third schematic structural diagram of an antenna circuit provided in the present embodiment, the plurality of elastic pins 10 includes a first elastic pin 101 and a second elastic pin 102, the patch element 60 is attached to an attachment position (503-505) between the tuning switch 20 and the first elastic pin 101, so that the first elastic pin 101 serves as a switch elastic pin, and the patch element 60 is attached to an attachment position (509, 513, and 514) between the rf chip 30 and the second elastic pin 102, so that the second elastic pin 102 serves as a feed point elastic pin.

In some embodiments, the plurality of spring pins 10 further comprises a third spring pin 103, and the patch element is attached to the patch site 501 between the metal floor 40 and the third spring pin 103, so that the third spring pin 103 serves as a grounding spring pin.

In some embodiments, the antenna circuit further comprises a parasitic antenna, the plurality of spring legs further comprises a fourth spring leg 104, and the patch element 60 is attached to a patch location (512) between the metal floor 40 and the fourth spring leg 104, such that the fourth spring leg 104 acts as a parasitic spring leg. The rest of the patch bits (502, 506, 507, 508, 510, 511) are not subjected to the patch, i.e., the disconnection process.

At this time, the spring feet are sequentially from left to right: a grounding spring pin, a switch spring pin, a feed point spring pin and a parasitic spring pin.

In some embodiments, as shown in fig. 4, fig. 4 is a fourth structural schematic diagram of an antenna circuit provided in the present embodiment, a plurality of elastic pins 10 includes a first elastic pin 101, and the patch element 60 is attached to the patch locations (507, 511, 512, 513, and 514) between the tuning switch 20 and the rf chip 30 and the first elastic pin 101, so that the first elastic pin 101 serves as a switch elastic pin and also serves as a feed point elastic pin.

In some embodiments, the plurality of spring pins 10 further comprises third spring pins 102 and 103, and the patch element is attached to the

patch sites

506 and 510 between the metal floor 40 and the third spring pins 102 and 103, so that the third spring pins 102 and 103 serve as grounding spring pins.

In some embodiments, the antenna circuit further comprises a parasitic antenna, the plurality of spring pins further comprises a fourth spring pin 104, and the patch element 60 is attached to a patch location (501) between the metal floor 40 and the fourth spring pin 104, such that the fourth spring pin 104 acts as a parasitic spring pin. The rest of the pasting positions (502-505, 508, 509) do not carry out pasting, namely, the open circuit processing.

At this time, the spring feet are sequentially from left to right: parasitic spring leg, grounding spring leg, switch spring leg and feed point spring leg.

And connecting the tuning switch 20 to the feeder circuit, the feeder circuit impedance can be tuned.

In summary, the switch pin and the feed pin can be selected from the pins 101 to 104, and the grounding pin and the parasitic pin are selected from the remaining 2 pins, which have grounding and non-grounding 2, respectively, so that at least 64 circuit architectures, i.e., 4 × 4 × 2 × 64 circuit architectures, can be realized by using the frame of fig. 1.

In some embodiments, patch element 60 includes:

one or more of a chip resistor, a chip capacitor and a chip inductor.

In some embodiments, the patch resistor has a resistance of 0 ohm.

The specific patch element 60 is a patch resistor, a patch capacitor, or a patch inductor, and if the patch resistor is a 0ohm resistor, the patch element only functions as a circuit connection. If the antenna is a capacitor or an inductor, when the antenna plays a circuit connection role, the antenna can play a role in adjusting circuit impedance matching, and an antenna matching function is realized.

In some embodiments, the patch element is a 0201 package or a 0402 package.

In some embodiments, the package size of the patch element is related to power by

Or

Referring to fig. 5, fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present disclosure. The mobile terminal 100 may include a housing 11, a display 12, a circuit board 13, and a battery 14. Note that the mobile terminal 100 is not limited to the above.

Wherein the housing 11 may form an outer contour of the mobile terminal 100. In some embodiments, the housing 11 may be a metal housing, such as a metal such as magnesium alloy, stainless steel, and the like. It should be noted that the material of the housing 11 in the embodiment of the present application is not limited to this, and other manners may also be adopted, such as: the housing 11 may be a plastic housing, a ceramic housing, a glass housing, etc.

Wherein the display screen 12 is mounted in the housing 11. The display 12 is electrically connected to the circuit board 13 to form a display surface of the mobile terminal 100. In some embodiments, the display surface of the mobile terminal 100 may be provided with non-display areas, such as: the top end or/and the bottom end of the mobile terminal 10 may form a non-display area, that is, the mobile terminal 10 forms a non-display area on the upper portion or/and the lower portion of the display 12, and the mobile terminal 100 may mount a camera, a receiver, etc. on the non-display area. Note that the display surface of the mobile terminal 100 may not be provided with the non-display area, that is, the display 12 may be a full-screen. The display screen may be tiled across the entire display surface of the mobile terminal 10 so that the display screen may be displayed full screen on the display surface of the mobile terminal 100.

The display 12 may be in a regular shape, such as a rectangular parallelepiped structure or a rounded rectangular structure, and the display 12 may also be in an irregular shape.

The display 12 may be one or a combination of liquid crystal display, organic light emitting diode display, electronic ink display, plasma display, and display using other display technologies. The display screen 12 may include an array of touch sensors (i.e., the display screen 12 may be a touch display screen). The touch sensor may be a capacitive touch sensor formed by a transparent touch sensor electrode (e.g., an Indium Tin Oxide (ITO) electrode) array, or may be a touch sensor formed using other touch technologies, such as acoustic wave touch, pressure sensitive touch, resistive touch, optical touch, and the like, and the embodiments of the present application are not limited thereto.

It should be noted that, in some embodiments, a cover plate may be disposed on the display 12, and the cover plate may cover the display 12 to protect the display 12. The cover may be a clear glass cover so that the display 12 is shown through the cover. In some embodiments, the cover plate may be a glass cover plate made of a material such as sapphire.

In some embodiments, after the display 12 is mounted on the housing 11, a receiving space is formed between the housing 11 and the display 12, and the receiving space can receive components of the mobile terminal 10, such as the circuit board 13, a battery, and the like.

The circuit board 13 is installed in the housing 11, the circuit board 13 may be a main board of the mobile terminal 10, and one, two or more functional devices such as a motor, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, a receiver, and a processor may be integrated on the circuit board 13.

In some embodiments, the circuit board 13 may be fixed within the housing 11. Specifically, the circuit board 13 may be screwed to the housing 11 by screws, or may be snap-fitted to the housing 11. It should be noted that the way of fixing the circuit board 13 to the housing 11 is not limited to this, and other ways, such as a way of fixing by a snap and a screw, may also be used.

Wherein a battery 14 is mounted in the housing 11, and the battery 11 is electrically connected to the circuit board 13 to supply power to the mobile terminal 10. The housing 11 may serve as a battery cover for the battery 14. The case 11 covers the battery 14 to protect the battery 14, reducing damage to the battery 14 due to collision, dropping, etc. of the mobile terminal 10.

In some embodiments, the battery 11 may be a nickel cadmium battery, a lithium ion battery, or other type of battery. The number of batteries may be one or more. The shape of the battery can be square, strip or other shapes, and in practical application, the shape of the battery can be set according to the internal structure of the mobile terminal, which is not limited in the application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The antenna circuit, the antenna device, the storage medium, and the mobile terminal provided in the embodiments of the present application are introduced in detail, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. An antenna circuit, comprising:

a plurality of spring feet;

a tuning switch connected to each spring leg of the plurality of spring legs;

the radio frequency chip is connected with each elastic pin;

the metal floor is connected with each elastic foot;

and the patch positions are arranged among the tuning switch, the radio frequency chip, the metal floor and each elastic foot, so that a patch element is arranged on the patch positions to patch so as to determine the function of each elastic foot in the plurality of elastic feet.

2. The antenna circuit of claim 1, wherein the plurality of spring legs comprises a first spring leg and a second spring leg, and wherein the patch element is attached to a patch site between the tuning switch and the first spring leg such that the first spring leg acts as a switch spring leg, and wherein the patch element is attached to a patch site between the rf chip and the second spring leg such that the second spring leg acts as a feed point spring leg.

3. The antenna circuit of claim 2, wherein the plurality of spring legs further comprises a third spring leg, and wherein the patch element is attached to the patch site between the metal ground and the third spring leg such that the third spring leg acts as a ground spring leg.

4. The antenna circuit of claim 3, further comprising a parasitic antenna, wherein the plurality of spring legs further comprises a fourth spring leg, and wherein the patch element is attached to the patch site between the metal ground and the fourth spring leg such that the fourth spring leg acts as the parasitic spring leg.

5. The antenna circuit of claim 1, wherein the patch element comprises:

one or more of a chip resistor, a chip capacitor and a chip inductor.

6. The antenna circuit of claim 5, wherein the patch resistor has a resistance of 0 ohm.

7. The antenna circuit of claim 1, wherein the patch element is a 0201 package or a 0402 package.

8. The method of claim 7Wherein the package size of the patch element has a power relationship of

Or

9. The antenna circuit of claim 1, wherein the tuning switch and the rf chip are connected to the same pogo pin.

10. A mobile terminal, characterized in that it comprises an antenna circuit according to any of claims 1 to 9.