CN212751133U

CN212751133U - FPC antenna and school badge

Info

Publication number: CN212751133U
Application number: CN202021609758.2U
Authority: CN
Inventors: 郁军; 刘黎明; 顾军
Original assignee: Kunshan Haber Radio Electronic Technology Co ltd
Current assignee: Kunshan Haber Radio Electronic Technology Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-03-19
Anticipated expiration: 2030-08-05

Abstract

The utility model provides a FPC antenna, its includes circular FPC base plate, first antenna and second antenna, and first antenna sets up on the FPC base plate, and the second antenna is including setting up second feed point, second trunk feeder, second radiation line, parasitic point, parasitic line on the FPC base plate and stretching out the third radiation line of FPC base plate, the second feed point set up in on the second trunk feeder, the second radiation line with second trunk feeder electricity is connected and is set up on the FPC base plate along circumference extension, and the third radiation line is connected with second trunk feeder electricity and is drawn forth outside the FPC base plate, parasitic line and second trunk feeder interval set up, and the parasitic point sets up on the parasitic line, and the parasitic line sets up on the FPC base plate with the extending direction of second radiation line is opposite and along circumference extension. The antenna can effectively expand the extension space of the antenna, and avoids signal interference caused by undersize distance between the radiation ends of two types of antennas, so that the antenna has better isolation.

Description

FPC antenna and school badge

Technical Field

The present application relates to the field of antenna technology, and more particularly, to an FPC antenna and a school badge having the same.

Background

In recent years, wireless communication systems have been widely used in various fields, and antennas are used as bridges for wireless communication, which is a key for realizing wireless communication. The antenna has the characteristics of being bendable and high in application elasticity, and is widely applied to various electronic devices, particularly electronic products with small sizes.

The student attendance data is a necessary component of smart campus and smart security, and at present, schools use an automatic student safety identification short message service system and an attendance system to solve the problem of information communication between parents and schools, so that the student attendance data is an effective means for ensuring the access safety of students and managing the activity content outside the school. The conventional school badge embedded FPC antenna generally comprises a circular FPC base body and an antenna arranged on the FPC base body, and the positioning accuracy of a single type of antenna is poor; due to the small size of the circular FPC substrate, the radiation ends of the annular integrated structures of two or more types of antennas interfere with each other, and the isolation is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide an FPC antenna and a badge to overcome the technical problem of poor positioning accuracy caused by a single type of badge antenna or poor isolation between two or more types of antennas in the prior art.

In order to solve the technical problem, the present application provides an FPC antenna, which includes an FPC substrate, a first antenna, and a second antenna, the first antenna being disposed on the FPC substrate, the first antenna including a ground point, a first feed point, a first main feeder line, and a first radiation line, the ground point, the first feed point, and the first radiation line being electrically connected to the first main feeder line, the first radiation line being disposed on the FPC substrate in a circumferentially extending manner; the second antenna is including setting up second feed point, second trunk feeder, second radiation line, parasitic point, parasitic line and the third radiation line that stretches out the FPC base plate on the FPC base plate, the second feed point set up in on the second trunk feeder, the second radiation line with second trunk feeder electricity is connected and is set up on the FPC base plate along circumference extension, and the third radiation line is connected and is drawn forth the FPC base plate outside with second trunk feeder electricity, parasitic line and second trunk feeder interval set up, and the parasitic point sets up on the parasitic line, and the parasitic line sets up on the FPC base plate with the extending direction of second radiation line is opposite and along circumference extension.

Preferably, the first radiating line and the parasitic line extend in opposite directions and are spaced apart from each other, and a distance between the first radiating line and the parasitic line is greater than 1/5 of an outer circumference of the FPC board.

Preferably, the parasitic line extends along an outer edge of the FPC substrate and is provided in an arc shape.

Preferably, the second radiation line extends along an outer edge of the FPC board and is provided in an arc shape.

Preferably, the first line of radiation is locally square wave-like, saw-toothed or wave-like.

Preferably, the first antenna is a GPS antenna.

Preferably, the second antenna is a GPRS antenna.

Preferably, the second radiating line and the parasitic line are used together for transceiving an intermediate frequency signal, and the third radiating line is used for transceiving a low frequency signal.

Preferably, the same side surface of the first antenna and the second antenna is a Ni-Au layer.

In order to solve the technical problem, the application further provides a school badge which comprises the FPC antenna.

This application FPC antenna includes the antenna of two types to ensure that the antenna has better positioning accuracy, it is further, outside partial circuit in the antenna of two types extended the circular shape FPC base plate, so set up the extension space that can effectively expand the antenna, avoid the interval undersize between the radiation end of two types of antennas to arouse signal interference, consequently, have better isolation.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a preferred embodiment of the FPC antenna of the present application;

FIG. 2 shows the GPRS low frequency efficiency obtained by the FPC antenna test of the present application;

FIG. 3 shows the GPRS intermediate frequency efficiency obtained by the FPC antenna test of the present application;

FIG. 4 shows GPS efficiency measured using the FPC antenna of the present application;

FIG. 5 is a comparison graph of efficiency obtained by FPC antenna test according to the present application and before improvement;

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

Referring to fig. 1 to 5, the FPC antenna of the present application includes an FPC substrate 10, a first antenna 20, and a second antenna 30, which are circular as a whole. In this embodiment, the first antenna 20 is a GPS antenna, the frequency of the GPS antenna is 1575.42MHz, and the second antenna 30 is a GPRS antenna.

The overall round shape of the FPC substrate 10 means that the connection line of the outer edge of the FPC substrate is a round shape, which is not necessarily a closed round shape, and there may be an interruption or a notch; the inner structure of the FPC board 10 is not limited, and the inner portion may be hollow.

The first antenna 20 is disposed on the FPC substrate 10, and the first antenna 20 includes a ground point 21, a first feeding point 22, a first main feeder 23, and a first radiating line 24. The ground point 21, the first feeding point 22 and the first radiating line 24 are all electrically connected to the first main feeding line 23, and the first radiating line 24 extends along the circumferential direction and is disposed on the FPC substrate 10.

Specifically, the first radiating line 24 is disposed on the FPC board 10 so as to extend in the circumferential direction, which means that the first radiating line 24 is entirely arc-shaped, and in order to improve the receiving efficiency of the first antenna 20, a part of the first radiating line 24 may be square wave-shaped, saw-tooth-shaped, or wave-shaped.

The second antenna 30 includes a second feeding point 31, a second main feeding line 32, a second radiating line 33, a parasitic point 34, a parasitic line 35 and a third radiating line 36 extending out of the FPC substrate 10, the second feeding point 31 is disposed on the second main feeding line 33, the second radiating line 33 is electrically connected to the second main feeding line 32 and extends circumferentially on the FPC substrate 10, the third radiating line 36 is electrically connected to the second main feeding line 32 and extends out of the FPC substrate 10, the parasitic line 35 and the second main feeding line 32 are disposed at an interval, the parasitic point 34 is disposed on the parasitic line 35, and the extending directions of the parasitic line 35 and the second radiating line 33 are opposite and extend circumferentially on the FPC substrate 10. The second radiating line and the parasitic line are used for receiving and transmitting intermediate-frequency signals with the frequency of 1710-1990 MHz, and the third radiating line is used for receiving and transmitting low-frequency signals with the frequency of 824-960 Mhz.

Specifically, the first radial line 24 and the parasitic line 35 extend toward each other and are spaced apart from each other, and the distance between the first radial line and the parasitic line is greater than 1/5 of the outer circumference of the FPC board 10. The spacing therebetween means the distance between the end of the first radiating line 24 and the end of the parasitic line 34.

In order to ensure the signal receiving efficiency of the antenna, the parasitic line 35 is preferably extended along the outer edge of the FPC substrate 10 and provided in an arc shape; the second radial lines 33 extend along the outer edge of the FPC board 10 and are provided in an arc shape. In order to improve the signal receiving efficiency of the antenna, the same side surface of the first antenna 20 and the second antenna 30 is further a Ni — Au layer.

This application FPC antenna includes the antenna of two types to ensure that the antenna has better positioning accuracy, it is further, outside partial circuit in the antenna of two types extended circular shape FPC base plate 10, so set up the extension space that can effectively expand the antenna, avoid the interval undersize between the radiation end of two types of antennas to arouse signal interference, consequently, have better isolation. Experiments prove that the GPS receiving efficiency, the GPRS low-frequency receiving efficiency and the GPRS intermediate-frequency receiving efficiency of the FPC antenna are greatly improved.

The application also protects a school badge applying the FPC antenna, and the dual positioning functions of GPS and GPRS can be realized.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The FPC antenna is characterized by comprising an FPC substrate, a first antenna and a second antenna, wherein the FPC substrate, the first antenna and the second antenna are integrally circular, the first antenna is arranged on the FPC substrate and comprises a grounding point, a first feeding point, a first main feeder line and a first radiating line, the grounding point, the first feeding point and the first radiating line are all electrically connected with the first main feeder line, and the first radiating line is arranged on the FPC substrate in a circumferentially extending mode; the second antenna is including setting up second feed point, second trunk feeder, second radiation line, parasitic point, parasitic line and the third radiation line that stretches out the FPC base plate on the FPC base plate, the second feed point set up in on the second trunk feeder, the second radiation line with second trunk feeder electricity is connected and is set up on the FPC base plate along circumference extension, and the third radiation line is connected and is drawn forth the FPC base plate outside with second trunk feeder electricity, parasitic line and second trunk feeder interval set up, and the parasitic point sets up on the parasitic line, and the parasitic line sets up on the FPC base plate with the extending direction of second radiation line is opposite and along circumference extension.

2. The FPC antenna of claim 1, wherein the first radiating line and the parasitic line extend toward each other and are spaced apart from each other, and a distance between the first radiating line and the parasitic line is greater than 1/5 of an outer circumference of the FPC substrate.

3. The FPC antenna of claim 2, wherein the parasitic lines extend along an outer edge of the FPC substrate and are arranged in a circular arc shape.

4. The FPC antenna of claim 3, wherein the second radiating line extends along an outer edge of the FPC substrate and is disposed in a circular arc shape.

5. The FPC antenna of claim 4, wherein the local portion of the first radiating line is square wave-shaped, saw-tooth-shaped, or wave-shaped.

6. The FPC antenna of claim 1, wherein the first antenna is a GPS antenna.

7. The FPC antenna of claim 1, wherein the second antenna is a GPRS antenna.

8. The FPC antenna of claim 1, wherein the second radiating line and the parasitic line are used together to transceive intermediate frequency signals, and the third radiating line is used to transceive low frequency signals.

9. The FPC antenna of claim 1, wherein the same side surface of the first and second antennas is a Ni-Au layer.

10. An school badge, characterized in that it comprises an FPC antenna as claimed in any one of claims 1-9.