CN104779434A - Anti-interference WiFi (wireless fidelity) dielectric printed antenna - Google Patents

Abstract

The invention discloses a WIFI anti-jamming dielectric plate printing antenna. The antenna includes a dielectric plate, a metal radiation patch, a metal microstrip line, a metal backplane and a feeder connector. The metal microstrip line and the metal radiation patch are electrically connected. Connected and printed on the front of the dielectric board, the metal backplane is printed on the back of the dielectric board and the metal backplane half surrounds the metal radiation patch, the central feed pin of the feed connector is connected to the metal microstrip line, and the feed connector’s The outer conductor is connected to the metal backplane. The metal backplane suppresses the signal, so the antenna of the present invention is a non-omnidirectional radiation antenna, and the radiation ability in one direction is weak, so that the interference signal in this direction is well suppressed, and the present invention has a planar structure, and the size Small, simple structure, easy to produce and process.

Description

A WIFI anti-jamming dielectric plate printing antenna

technical field

The invention relates to the field of radio antennas, in particular to a WIFI anti-jamming dielectric plate printing antenna.

Background technique

The principle of the WIFI antenna is that the radio frequency signal output by the radio transmitter is sent to the antenna through the feeder, and the antenna radiates out in the form of electromagnetic waves. Most of the existing WIFI antennas are omnidirectional radiation antennas, and their electromagnetic waves radiate from all directions. The defect is that when two WIFI omnidirectional radiation antennas are relatively close, the mutual interference between the two antennas will seriously affect the user access rate. and data transfer rate.

Contents of the invention

The present invention provides a WIFI anti-jamming dielectric plate printing antenna with simple structure and capable of effectively reducing the influence of interference sources for the defect that existing WIFI antennas are susceptible to interference, thereby seriously affecting the access rate and data transmission rate.

In order to solve the problems of the technologies described above, the technical solution of the present invention is as follows:

A WIFI anti-jamming dielectric plate printed antenna, the antenna includes a dielectric plate, a metal radiation patch, a metal microstrip line, a metal backplane and a feed connector, the metal microstrip line is electrically connected to the metal radiation patch and printed On the front of the dielectric board, the metal backplane is printed on the backside of the dielectric board and the metal backplane half surrounds the metal radiation patch. The central feed pin of the feed connector is connected to the metal microstrip line, and the outer conductor of the feed connector is connected to the metal microstrip line. Metal backplane connection.

In a preferred solution, the metal radiation patch is rectangular, circular or irregular in shape, and its size is a quarter wavelength of the operating frequency of the antenna.

In a preferred solution, the dielectric board is a rectangular dielectric board.

In a preferred solution, the relative positions of the metal backplane and the metal radiation patch are determined according to the antenna performance and impedance matching requirements.

In a preferred solution, the metal backplane is L-shaped, and the L-shaped metal backplane half surrounds the metal radiation patch.

In a preferred solution, the length of the raised portion of the L-shaped metal back plate is greater than a quarter wavelength of the operating frequency of the antenna.

Compared with the prior art, the beneficial effect of the technical solution of the present invention is: the WIFI anti-jamming dielectric plate of the present invention prints the antenna, the metal back plate is printed on the back of the dielectric plate and the metal back plate half surrounds the metal radiation patch, and the metal back plate is on the The signal plays a suppression role, so the antenna of the present invention is a non-omnidirectional radiation antenna, and the radiation ability in one direction is relatively weak, thereby suppressing the interference signal in this direction well, and the present invention is a planar structure with a small size and a Simple and convenient for production and processing.

Description of drawings

Fig. 1 is a schematic front view of the WIFI anti-jamming dielectric plate printed antenna of the present invention.

Fig. 2 is a schematic diagram of the back side of the WIFI anti-jamming dielectric plate printed antenna of the present invention.

Fig. 3 is a front perspective schematic diagram of the WIFI anti-jamming dielectric plate printed antenna of the present invention.

Fig. 4 is a perspective schematic view of the back side of the WIFI anti-jamming dielectric plate printed antenna of the present invention.

Fig. 5 is a radiation pattern diagram of the antenna of the present invention.

Among them: 1. Dielectric board; 2. Metal radiation patch; 3. Metal microstrip line; 4. Metal backplane; 5. Feed connector; 5-1. Center feed needle; 5-2. Outer conductor.

Detailed ways

The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;

In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example 1

A kind of WIFI anti-jamming dielectric board printing antenna, as shown in Figure 1-4, described antenna comprises dielectric board 1, metal radiation patch 2, metal microstrip line 3, metal backplane 4 and feed connector 5, described The metal microstrip line 3 is electrically connected to the metal radiation patch 2 and printed on the front of the dielectric board 1, the metal backplane 4 is printed on the back of the dielectric board 1 and the metal backplane 4 half surrounds the metal radiation patch 1, feeding The central feed pin 5 - 1 of the connector 5 is connected to the metal microstrip line 3 , and the outer conductor 5 - 2 of the feed connector 5 is connected to the metal backplane 4 .

In a specific implementation process, the metal radiation patch 2 is rectangular, circular or irregular in shape. In this embodiment, a rectangular metal radiation patch 2 is used, and its size is a quarter wavelength of the antenna's operating frequency.

In a specific implementation process, the dielectric board 1 is a rectangular dielectric board.

In a specific implementation process, the relative positions of the metal backplane 4 and the metal radiation patch 2 are determined according to the antenna performance and impedance matching requirements.

In a specific implementation process, the metal backplane 4 is L-shaped, and the L-shaped metal backplane 4 half surrounds the metal radiation patch 2 .

In a specific implementation process, the length of the raised portion of the L-shaped metal back plate 4 is greater than a quarter wavelength of the antenna's operating frequency.

In this embodiment, the WIFI anti-jamming dielectric board prints the antenna, the metal backboard 4 is printed on the back side of the dielectric board 1 and the metal backboard 4 half surrounds the metal radiation patch 2, and the metal backboard 4 suppresses the signal, so the present invention The antenna is a non-omnidirectional radiation antenna, and its radiation ability in one direction is relatively weak, so that the interference signal in this direction can be well suppressed. Moreover, the invention has a planar structure, small size, simple structure, and is convenient for production and processing.

Fig. 5 is the horizontal plane radiation pattern of the WIFI anti-jamming dielectric board printing antenna of the present invention, and the operating frequency of the antenna is 2.4 GHz. Since the length of the raised part of the L-shaped metal backboard is greater than a quarter of the working wavelength of the antenna, the metal backboard plays The function of suppressing and reflecting signals, the radiation ability of the antenna in the shielding direction is weak, which is 15dB lower than the maximum radiation direction, and the radiation ability in other directions except this direction is relatively good. Therefore, the direction with the weakest radiation capability of the antenna can be directed towards the interference source, thereby reducing the strength of the interference source signal received by the antenna, while taking into account the transmission and reception of wireless signals in other directions.

The same or similar reference numerals correspond to the same or similar components;

The terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be interpreted as limitations on this patent;

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (6)

1. the anti-interference dielectric-slab printed antenna of WIFI, it is characterized in that, described antenna comprises dielectric-slab (1), metal radiation paster (2), metal micro-strip line (3), metal backing (4) and feed connection (5), described metal micro-strip line (3) is electrically connected with metal radiation paster (2) and is printed on the front of dielectric-slab (1), described metal backing (4) is printed on the back side of dielectric-slab (1) and metal backing (4) semi-surrounding metal radiation paster (1), the apex drive pin (5-1) of feed connection (5) is connected with metal micro-strip line (3), the outer conductor (5-2) of feed connection (5) is connected with metal backing (4).

2. the anti-interference dielectric-slab printed antenna of WIFI according to claim 1, is characterized in that, described metal radiation paster (2) is rectangle, circle or irregularly shaped, and it is of a size of the quarter-wave of operating frequency of antenna.

3. the anti-interference dielectric-slab printed antenna of WIFI according to claim 1, is characterized in that, described dielectric-slab (1) is Rectangular Enclosure with Participating Media plate.

4. the anti-interference dielectric-slab printed antenna of WIFI according to claim 1, is characterized in that, described metal backing (4) is determined according to the performance of antenna and impedance matching requirements with the relative position of metal radiation paster (2).

5. the anti-interference dielectric-slab printed antenna of WIFI according to claim 1, is characterized in that, described metal backing (4) is L-type, metal radiation paster (2) described in L-type metal backing (4) semi-surrounding.

6. the anti-interference dielectric-slab printed antenna of WIFI according to claim 4, is characterized in that, the bossing length of L-type metal backing (4) is greater than the quarter-wave of operating frequency of antenna.