WO2015117359A1

WO2015117359A1 - Wireless fidelity (wifi) auxiliary antenna

Info

Publication number: WO2015117359A1
Application number: PCT/CN2014/088763
Authority: WO
Inventors: 曲兰英; 黄攀
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-07-21
Filing date: 2014-10-16
Publication date: 2015-08-13
Also published as: CN204011708U

Abstract

A wireless fidelity (WIFI) auxiliary antenna and a method for realizing the antenna. In the wireless fidelity (WIFI) auxiliary antenna, a WIFI radio-frequency signal line of a WIFI radio-frequency module is connected, by means of a matching circuit, to a first metallized hole on a mainboard, said hole being used for soldering a universal serial bus (USB); and the first metallized hole is connected to a pin in a metal shielding frame of a micro-USB port; and a second metallized hole on the mainboard is connected to the mainboard by grounding. By means of the technical solution, not only can the performance of WIFI be enhanced, but also the space occupied by the antenna can be saved.

Description

Wireless fidelity WIFI auxiliary antenna

Technical field

The present invention relates to the field of wireless fidelity WIFI auxiliary antenna technology, and in particular to a wireless fidelity WIFI auxiliary antenna.

Background technique

At present, smartphones have entered the era of 4th Generation Communication System (4G), the frequency band is increasing, the main antenna and diversity antenna are indispensable, and the wireless fidelity (WIFI, Wireless Fidelity)/Global Positioning System (GPS, Peripheral antennas such as Global Positioning System) are indispensable, and because of the hardware layout space and the limitations of the appearance of the mobile phone, there is not enough space on the smartphone to meet the 2G/3G/4G/WIFI/GPS/diversity antenna. With the space requirements of the antenna, with the development of wireless terminal technology, multiple-input multiple-output (MIMO) technology is gradually applied in more and more fields, and the requirement of multiple antennas makes the originally limited antenna. The space is even smaller.

Summary of the invention

The present invention has been made in order to provide a wireless fidelity WIFI auxiliary antenna in view of the problem that the multi-antenna in the terminal in the related art makes the originally limited antenna space narrower.

In order to solve the above technical problems, the following technical solutions are adopted:

A wireless fidelity WIFI auxiliary antenna includes: a first metallization hole for soldering a universal serial bus USB on a main board of the terminal, a metal shield frame of the USB, and a second metallization hole on the main board, wherein :

The first metallization hole is connected to the WIFI radio frequency signal line of the WIFI radio frequency module group through a matching circuit;

The first metallization hole is further connected to one pin of the USB metal shield frame;

The second metallization hole is connected to the main board ground.

Optionally, the WIFI auxiliary antenna further includes a third metallization hole on the main board, and the third metallization hole is connected to the main board ground.

Optionally, the WIFI auxiliary antenna further includes a fourth metallization hole on the main board, and the fourth metallization hole is suspended.

Optionally, a fourth metallization hole on the main board is connected to the copper-clad area of the main board, and the copper-plated area is an extended area on the soldering hole of the main board that is not connected to the main board.

Optionally, the third metallization hole and the fourth metallization hole on the main board are simultaneously suspended or connected to the copper plating area of the main board, and the copper plating area is not connected to the main board on the main board. An extended section of the weld hole.

Optionally, the form of the matching circuit includes: L-type matching, double L-type matching, or π-type matching.

Optionally, the shape of the copper-clad area comprises: a rectangle or an S-shape.

A method for implementing a wireless fidelity WIFI auxiliary antenna, comprising:

The WIFI radio frequency signal line of the WIFI radio frequency module group is connected to the first metallization hole of the main board of the terminal for soldering the universal serial bus USB through the matching circuit;

Connecting the first metallization hole to one of the metal shields of the USB;

The second metallized hole on the main board is connected to the main board ground.

Optionally, it also includes:

A third metallization hole on the main board is connected to the main board ground.

Optionally, it also includes:

The fourth metallized hole on the main board is suspended.

Optionally, it also includes:

Connecting a fourth metallized hole on the main board to a copper-clad area of the main board;

Wherein, the copper-clad area is an extended section of the soldering hole on the main board that is not connected to the main board.

Optionally, it also includes:

Opening the third metallization hole and the fourth metallization hole on the main board at the same time or simultaneously connecting with the copper plating area of the main board;

If two antennas are used and the USB metal shield can not be used as the antenna, the space occupied by the metal shield is constant. It is necessary to find another space to place the antenna. The above technical solution is charged by using the terminal board (circuit board). The WIFI auxiliary antenna realized by the metal shield frame of the micro-USB interface solves the problem that the multiple antennas in the terminal in the related art make the originally limited antenna space narrower, not only can enhance the performance of the WIFI, but also save the antenna occupation. space.

The above description is only an overview of the technical solutions of the present invention, and the above-described and other objects, features and advantages of the present invention can be more clearly understood. Specific embodiments of the invention are set forth below.

BRIEF abstract

Various other advantages and benefits will become apparent to those skilled in the art from a The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting. Throughout the drawings, the same reference numerals are used to refer to the same parts. In the drawing:

1 is a schematic structural diagram of a wireless fidelity WIFI auxiliary antenna according to an embodiment of the present invention;

2 is a schematic diagram of an example 1 of implementing a WIFI antenna using a metal shielded frame of a USB according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an example 2 of implementing a WIFI antenna using a metal shielded frame of a USB according to an embodiment of the present invention.

Preferred embodiment of the invention

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms without It should be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be more fully understood and the scope of the disclosure will be fully disclosed.

In order to solve the problem that the multiple antennas in the terminal in the related art make the originally limited antenna space narrower, the embodiment of the present invention provides a wireless fidelity WIFI auxiliary antenna, and the WIFI radio frequency signal from the radio frequency module passes through the matching circuit. , one pin of the metal shield that reaches the micro-USB port, one or two pins that are soldered to the motherboard are grounded, and the other two pins or another pin is soldered to the motherboard and the ground of the motherboard The isolated, grounded pins are designed to prevent static electricity and ensure the stability of the phone's charging. At the same time, according to the actual debugging situation, a copper-clad area can be extended on the soldering hole on the main board and the motherboard, as part of the antenna radiator, the size and shape of the copper-plated area can be adjusted according to the shape of the main board and the antenna. The situation is determined, it can be rectangular, S-shaped. The technical solution of the embodiment of the present invention makes the metal shield frame of the micro-USB port (to shield) into an inverted F antenna (IFA) antenna or a part of the IFA antenna to implement the WIFI antenna function, thereby saving space of one antenna.

The invention will be further described in detail below with reference to the drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

First introduce micro-USB, micro-USB has four pins, in the terminal processing and production, the four pins of micro-USB are to be placed in the corresponding metallized holes on the motherboard, and then soldered. Therefore, there are four metallized holes corresponding to the metallized holes, which can be connected to the main board, or can be connected to the main board ground, or isolated. As for which hole input signal is determined according to simulation or actual debugging, here No longer.

According to an embodiment of the present invention, a wireless fidelity WIFI auxiliary antenna is provided. FIG. 1 is a schematic structural diagram of a wireless fidelity WIFI auxiliary antenna according to an embodiment of the present invention. As shown in FIG. 1 , a WIFI radio frequency signal of a WIFI radio frequency module group is provided. The line is connected to a first metallization hole on the main board for soldering the universal serial bus USB through a matching circuit, and the first metallization hole is connected to one of the metal shields of the micro-USB port; The second metallization hole is connected to the main board ground. The form of the matching circuit includes: L-type matching, double L-type matching, or π-type matching.

In an embodiment of the invention, the third metallization hole on the main board is connected to the main board ground, and the fourth metallization hole is suspended. Optionally, when the metal body of the USB metal shield cannot meet the length requirement of the WIFI antenna, the fourth metallization hole on the motherboard is connected to the copper-clad area of the motherboard.

In another embodiment of the invention, the third metallization hole and the fourth metallization on the main board The holes are simultaneously suspended or connected to the copper plating area 5 of the main board at the same time. The copper-clad area 5 is an extended area on the soldering hole of the main board which is not connected to the main board. The shape of the copper-clad area includes: a rectangle, or an S-shape.

The above technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Example 1

2 is a schematic diagram of an example 1 of implementing a WIFI antenna using a metal shielded frame of a USB according to an embodiment of the present invention. As shown in FIG. 2, on a main board, a radio frequency signal is output from a WIFI radio frequency module circuit through a matching circuit, and then connected to the circuit. After soldering one of the metalized holes 2 of the USB, after the mobile phone chip is produced, the metallized hole 2 and the corresponding metal-shield of the Micro-USB A end are soldered together, so that the RF signal reaches the USB metal shield. on. The form of the antenna matching circuit is determined by the antenna engineer according to the actual debugging experience, and is mostly a matching circuit composed of an inductor, a resistor, and a capacitor device, such as an L-type, a double-L-type, and a type matching. The specific metallized hole to connect the RF signal can be determined according to simulation or analog debugging.

On the main board, one of the other three metallized holes can be directly connected to the main board ground, or can be grounded through the matching circuit, and the specific metallized hole is grounded, which can be determined according to simulation or simulation debugging.

The other two metallized holes are suspended and are not connected to the metal ground on the main board. When the mobile phone chip is produced, the USB metal shield 1 becomes a part of the WIFI antenna. When the metal body of the USB metal shield 1 cannot satisfy the WIFI antenna. When required for length, copper can be additionally deposited on the main board. The copper area is connected to one or two of the two metallized holes that are suspended, that is, the copper area 3 on the main board in the figure. The size of the copper area is determined by actual commissioning.

Through this scheme, when the mobile phone is not charged, the USB metal shield can be used as a WIFI auxiliary antenna, and the antenna can also be used as a BT antenna.

Example 2

3 is a schematic diagram of an example 2 of implementing a WIFI antenna using a metal shielded frame of a USB according to an embodiment of the present invention. As shown in FIG. 3, on a main board, a radio frequency signal is output from a WIFI radio frequency module circuit through a matching circuit, and then connected to the circuit. One of the metallized holes 2 for soldering the USB. After the mobile phone chip is produced, the metallized hole 2 and the corresponding metal-shield of the Micro-USB A end are soldered together, so that the RF signal reaches the USB metal shield. On the shelf. The form of the antenna matching circuit is determined by the antenna engineer according to the actual debugging experience, mostly for L-type, double-L type, and type matching, etc. A matching circuit composed of an inductor, a resistor, and a capacitor. The specific metallized hole can be connected to the RF signal and can be determined according to simulation or analog debugging.

On the main board, two of the other three metallized holes can be directly connected to the main board ground, or can be grounded through the matching circuit, and the specific metallized hole is grounded, which can be determined according to simulation or simulation debugging.

The other metallized hole is suspended and is not connected to the metal ground on the main board. After the mobile phone chip is produced, the USB metal shield 1 becomes a part of the WIFI antenna. When the metal body of the USB metal shield 1 cannot satisfy the WIFI antenna. When required for length, copper can be additionally deposited on the main board. The copper area is connected to the suspended metallized hole, that is, the copper area on the main board in the figure. The size of the copper area is determined by actual commissioning.

In summary, with the technical solution of the embodiment of the present invention, the WIFI auxiliary antenna realized by the metal shield frame of the micro-USB interface charged on the terminal motherboard solves the problem that the multiple antennas in the terminal in the related art are originally limited. The problem that the antenna space is more narrow can not only enhance the performance of the WIFI, but also save the space occupied by the antenna.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Industrial applicability

The above technical solution solves the problem that the multi-antenna in the terminal in the related art makes the originally limited antenna space narrower by using the WIFI auxiliary antenna realized by the metal shield frame of the micro-USB interface charged on the terminal board, and can not only enhance the WIFI. Performance, and can save space occupied by the antenna. Therefore, the present invention has strong industrial applicability.

Claims

A wireless fidelity WIFI auxiliary antenna includes: a first metallization hole for soldering a universal serial bus USB on a main board of the terminal, a metal shield frame of the USB, and a second metallization hole on the main board, wherein :

The first metallization hole is connected to the WIFI radio frequency signal line of the WIFI radio frequency module group through a matching circuit;

The first metallization hole is further connected to one pin of the USB metal shield frame;

The second metallization hole is connected to the main board ground.
The WIFI auxiliary antenna according to claim 1, further comprising a third metallization hole on the main board, wherein the third metallization hole is connected to the main board ground.
The WIFI auxiliary antenna according to claim 2, further comprising a fourth metallization hole on the main board, wherein the fourth metallization hole is suspended.
The WIFI auxiliary antenna according to claim 2, wherein a fourth metallization hole on the main board is connected to a copper-clad area of the main board, and the copper-clad area is not connected to the main board on the main board. An extended section of the weld hole.
The WIFI auxiliary antenna according to claim 1, wherein the third metallization hole and the fourth metallization hole on the main board are simultaneously suspended or simultaneously connected to the copper plating area of the main board, and the copper plating area is the main board. An extended section of the soldering hole that is not connected to the motherboard.
The WIFI auxiliary antenna according to claim 1, wherein the form of the matching circuit comprises: L-type matching, double L-type matching, or π-type matching.
The WIFI auxiliary antenna according to claim 4 or 5, wherein the shape of the copper-clad area comprises a rectangle or an S-shape.
A method for implementing a wireless fidelity WIFI auxiliary antenna, comprising:

The WIFI radio frequency signal line of the WIFI radio frequency module group is connected to the first metallization hole of the main board of the terminal for soldering the universal serial bus USB through the matching circuit;

Connecting the first metallization hole to one of the metal shields of the USB;

The second metallized hole on the main board is connected to the main board ground.
The method for implementing a wireless fidelity WIFI auxiliary antenna according to claim 8, further comprising:

A third metallization hole on the main board is connected to the main board ground.
The method for implementing a wireless fidelity WIFI auxiliary antenna according to claim 9, further comprising:

The fourth metallized hole on the main board is suspended.
The method for implementing a wireless fidelity WIFI auxiliary antenna according to claim 9, further comprising:

Connecting a fourth metallized hole on the main board to a copper-clad area of the main board;

Wherein, the copper-clad area is an extended section of the soldering hole on the main board that is not connected to the main board.
The method for implementing a wireless fidelity WIFI auxiliary antenna according to claim 8, further comprising:

Opening the third metallization hole and the fourth metallization hole on the main board at the same time or simultaneously connecting with the copper plating area of the main board;

Wherein, the copper-clad area is an extended section of the soldering hole on the main board that is not connected to the main board.
The method of implementing a wireless fidelity WIFI auxiliary antenna according to claim 8, wherein the form of the matching circuit comprises: L-type matching, double L-type matching, or π-type matching.
The method of implementing a wireless fidelity WIFI auxiliary antenna according to claim 11 or 12, wherein the shape of the copper-clad area comprises a rectangle or an S-shape.