WO2018112986A1

WO2018112986A1 - Antenna

Info

Publication number: WO2018112986A1
Application number: PCT/CN2016/111982
Authority: WO
Inventors: 胡洁维
Original assignee: 胡洁维
Priority date: 2016-12-25
Filing date: 2016-12-25
Publication date: 2018-06-28

Abstract

Disclosed is an antenna, comprising a rectangular PCB. The rectangular PCB is provided with two vertically symmetrical microstrip units. Each microstrip unit comprises a rectangular feed cross arm. Multiple hexagonal feed holes are arranged on the feed cross arm. A first connecting arm extends out of the center of the feed cross arm. The free end of the first connecting arm is provided with a first circular microstrip radiator. V-shaped grooves are provided at two sides of the first microstrip radiator. The antenna has a wide frequency range and good degree of isolation and directivity.

Description

Title of the invention: an antenna

Technical field

The present invention relates to an antenna.

Background technique

[0002] At present, there are many types of antennas, but in the case of a wide frequency range in a specific direction, the requirements for stability are required to have strict circuit electrical design.

technical problem

Problem solution

Technical solution

[0003] It is an object of the present invention to overcome the above-discussed shortcomings and to provide an antenna.

[0004] In order to achieve the above object, a specific embodiment of the present invention is as follows: An antenna comprising a rectangular PCB board, and a rectangular PCB board is provided with two sets of microstrip units symmetrically up and down, each set of microstrip units including a rectangular shape a feeding cross arm, wherein the feeding cross arm is arranged with a plurality of hexagonal feeding holes; the center of the feeding cross arm extends upwardly with a first connecting arm, and the free end of the first connecting arm is provided The first microstrip radiator has a circular shape, and the first microstrip radiator has V-shaped grooves on both sides thereof; the two sides of the feeding cross arm also extend upward to have two second connecting arms, and the second connecting arms are respectively upward Extending a second microstrip radiator having a right-angled trapezoid, the second microstrip radiator extending upwardly has a third connecting arm, and further includes a dome-shaped radiating arm, and the two legs of the arching back arm are respectively The third connecting arms are connected; the top side of the bow back radiating arm extends with a plurality of annular radiating arms arranged in a row, and the two sides of the arch back radiating arms are provided with a first rectangular recess, and the bottom edge of the first rectangular recess is inward Having a second rectangular recess; further comprising a rectangular a vibrator arm, the parasitic vibrator arm is disposed in a concave area of the arch back radiation arm; each of the second microstrip radiators is provided with a rectangular first hollow hole near the top edge, and an L shape near the bottom side The second hollow hole, the longitudinal side of the second hollow hole is provided with three rectangular third hollow holes inward, and the lateral edge of the second hollow hole extends upward to have a rectangular fourth hollow hole.

[0005] Preferably, the angle of the V-shaped groove is 30 degrees.

[0006] Preferably, the number of the feeding holes is 10-12.

[0007] Preferably, the parasitic vibrator arm is provided with a plurality of rectangular endoscope holes arranged together, and the two sides of the endoscope hole The inner recess has a semicircular recess.

[0008] Preferably, the number of annular radiating arms is eight.

Advantageous effects of the invention

Beneficial effect

[0009] The antenna has a wide frequency range and good isolation and directivity.

Brief description of the drawing

DRAWINGS

1 is a plan view of an antenna of the present invention;

2 is a schematic structural view of a microstrip unit of the present invention;

3 is a simulation test diagram of electrical performance of an antenna of the present invention;

4 is a directional diagram of an antenna of the present invention;

[0014] The reference numerals in FIGS. 1 to 4 illustrate:

[0015] al-rectangular PCB board; bl-feed cross arm; bl l-feed hole; bl2-first connecting arm; bl3-second connecting arm b2-first microstrip radiator; b21-V-shaped slot B3-second microstrip radiator; b31-first hollow hole; b32-second hollow hole; b33-third hollow hole; b34-fourth hollow hole; b4-third connecting arm; b5-backbone radiation Arm; b51-first rectangular recess; b52-second rectangular recess; b6-annular radiating arm; b7-parasitic oscillator arm; b71

- Inside the hole.

Embodiments of the invention

The invention is further described in detail below with reference to the accompanying drawings and specific embodiments, which are not intended to limit the scope of the invention.

[0017] As shown in FIG. 1 to FIG. 4, an antenna according to this embodiment has a rectangular PCB board a1. The rectangular PCB board a is provided with two sets of microstrip units symmetrically up and down, and each group of microstrip units includes There is a rectangular feeding cross arm bl, and a plurality of hexagonal feeding holes M l are arranged on the feeding cross arm M; a center of the feeding cross arm bl extends upwardly with a first connecting arm Μ2, the free end of the first connecting arm M2 is provided with a circular first microstrip radiator b2, the first microstrip radiator b2 is provided with V-shaped grooves B21 on both sides; the feeding cross arm bl is also extended upward There are two second connecting arms M3, and the second connecting arm M3 respectively extends upwardly with a second microstrip radiator b3 having a right-angled trapezoid, and the second microstrip radiator b3 extends upward with a third connecting arm b4, and further includes a ridged back radiating arm b5, the two legs of the bow back radiating arm b5 are respectively connected to the two third connecting arms b4; the top side of the bow back radiating arm b5 extends with a plurality of arranged annular radiating arms B6, the first rectangular recess b51 is disposed on both sides of the archback radiating arm b5, and the bottom edge of the first rectangular recess b51 is provided with a second rectangular recess b52 inward; and further includes a rectangular parasitic vibrator arm b7, the parasitic vibrator arm b7 a recessed area disposed on the back radiating arm b5; each of the second microstrip radiators b3 is provided with a rectangular first hollow hole b31 near the top edge, and an L-shaped second hollow near the bottom side The hole b32, the longitudinal side of the second hollow hole b32 is provided with three rectangular third hollow holes b33 inwardly, and the lateral side of the second hollow hole b32 extends upwardly with a rectangular fourth hollow hole b34. The antenna structure is finally determined by not less than 300 microstrip circuit structure design, and by not less than 500 tests and parameter adjustments. In the simulation of electromagnetic interference, the antenna has a wider frequency range and Good isolation and directionality. The actual test results are as follows. The HFSS15 software calculates it as shown in Figure 3 and Figure 4. From the port reflections of S3 and S2 in Figure 3, the frequency range is very wide, from 2.05 GHz to 3.0 GHz; The need for detection, in addition, can be seen in the S3, its isolation is better, in the frequency range is greater than 25.5dB. In addition, as seen from Fig. 4, the directivity is good. In addition, the test results and the simulation results are basically the same from the specific test.

[0018] Preferably, the angle of the V-shaped groove B21 is 30 degrees. Preferably, the number of the feeding holes bl l is 10-12. The parasitic vibrator arm b7 is provided with a plurality of rectangular endoscopic holes b71 arranged in series, and the two sides of the endoscope hole b71 are recessed inwardly with a semicircular recess. Preferably, the number of annular radiating arms b6 is eight. This setting can effectively improve the antenna performance and reduce the standing wave ratio.

[0019] The communication antenna is a non-size required antenna, and the above requirements are met as long as the holes and holes are provided in the bending direction; but if better stable performance is required, the specific size of the antenna can be optimized as follows: The length and width of the rectangular PCB board a are: 84mm and 58mm respectively; the line width and length of the feeding cross arm bl are: 4. 2mm and 3.9mm. The side length of the feed hole bl l is: lmm, the distance between the centers of the two feed holes bl l is 3 mm; the line width of the first connecting arm M2 is 2.4 mm, the height is 6.2 mm; the first microstrip radiation The radius of the body b2 is 4.4 mm, the side length of the V-shaped groove B21 is 1.5 mm; the line width of the second connecting arm bl3 is 2.4 mm, and the height thereof is 3.4 mm; the height of the second microstrip radiator b3 is 10.6 mm The length of the bottom side is 23mm, the length of the top side is 11.8mm; the line width of the third connecting arm b4 is 2.4mm, the height is: 2.3mm; the line width of the back radiating arm b5 is 9.4m m, the top side length is 54mm, the height is: 12.4mm; the inner diameter radius of the annular radiating arm b6 is: 1.3mm; the line width is 0.7mm, and the distance between the centers of the two annular radiating arms b6 is 6.3mm, A rectangular recess b51 has a width of 1.5 mm and a length of 6.9 mm: the second rectangular recess b52 has a width of 1.6 mm and a length of 3.9 mm. The length and line width of the parasitic vibrator arm b7 are: 33 mm and 4.5 mm, respectively;

[0020] The line widths of the first hollow hole b31 and the second hollow hole b32 are: 1.2 mm; the length of the first hollow hole b31 is: 6.8 mm, the length of the third hollow hole b33 is longer than the length of the fourth hollow hole b34 All: 3.2mm. The width and height of the endoscope hole b71 are 2.4 mm and 2.3 mm, respectively; the radius of the semicircular recess is 0.6 mm.

[0021] The above description is only a preferred embodiment of the present invention, and equivalent changes or modifications made to the structures, features, and principles described in the scope of the present invention are included in the protection of the present patent application. Within the scope

Claims

Claim

An antenna comprising: a rectangular PCB board; the rectangular PCB board is provided with two sets of microstrip units symmetrically up and down, each set of microstrip units including a rectangular feed cross arm, the feed cross arm a plurality of hexagonal feed holes are arranged on the upper side; a center of the feed cross arm extends upwardly with a first connecting arm, and a free end of the first connecting arm is provided with a circular first microstrip radiator a V-shaped groove is arranged on both sides of the first microstrip radiator; two second connecting arms are further extended on both sides of the feeding cross arm, and the second connecting arm respectively extends upwardly with a second microstrip radiation having a right-angled trapezoid Body, the second microstrip radiator extends upwardly with a third connecting arm, and further comprises a 弓-shaped arch-back radiating arm, wherein the two legs of the arch-back radiating arm are respectively connected to the two third connecting arms; The top side of the rib is extended with a plurality of annular radiating arms, and the two sides of the rib radiating arm are provided with a first rectangular recess, and the bottom of the first rectangular recess is provided with a second rectangular recess inward; Parasitic oscillator arm, parasitic oscillator arm is placed on the arch back a concave area of the shooting arm; each of the second microstrip radiators is provided with a rectangular first hollow hole near the top edge, and an L-shaped second hollow hole near the bottom side, and the second hollow hole The longitudinal side is provided with three rectangular third hollow holes inward, and the lateral side of the second hollow hole extends upward to have a rectangular fourth hollow hole.

An antenna according to claim 1, wherein: said V-shaped groove has an angle of 30 degrees.

The antenna according to claim 1, wherein the number of the feeding holes is 10-12.

An antenna according to claim 1, wherein: the number of annular radiating arms is ι\