CN112768912B - 1X 4 wave beam fixed traveling wave antenna - Google Patents

Abstract

The invention provides a 1 x 4 wave beam fixed traveling wave antenna, which comprises an upper layer metal plate, a lower layer metal plate, a dielectric plate, a main feeder line, 4 branches and 4 radiation patches, wherein: the upper metal plate, the lower metal plate and the dielectric plate are all in a strip shape, the upper metal plate is attached to the upper surface of the dielectric plate, and the lower metal plate is attached to the lower surface of the dielectric plate; the dielectric slab is provided with a central layer, the central layer is internally provided with the main feeder, 4 branches and 4 radiation patches, the main feeder is arranged along the length direction of the dielectric slab, the 4 branches are connected with the main feeder, the 4 branches are arranged along the width direction of the dielectric slab, the 4 branches have length difference, and the 4 radiation patches are respectively connected with one branch. The invention realizes the fixed radiation characteristic of the wave beam through the length difference of the 4 branches, and meanwhile, the antenna of the invention has the advantages of easy integration and easy processing and can realize large bandwidth.

Description

A 1×4 beam fixed traveling wave antenna

technical field

The present invention relates to the field of communication antennas, and more particularly, to a 1×4 beam fixed traveling wave antenna.

Background technique

The beam fixed antenna is a kind of antenna commonly used in wireless communication. It can radiate in a fixed direction and can be used in satellite communication and point-to-point communication. The traditional antennas that can realize beam fixation are series-fed array antennas. Some leaky-wave antennas can also be regarded as series-fed array antennas, but there will be beam dispersion. The beam dispersion is reduced, and the beam fixation methods include coupled substrate integrated waveguide antennas, metamaterial antennas, and metasurface antennas. But the design of these antennas is more complicated.

The publication date is November 24, 2017, and the Chinese patent with publication number CN107394381A discloses a low-profile broadband circularly polarized array antenna based on stacked traveling wave antenna units, including: three sections of printed on two sides of a dielectric plate connected end to end. A circularly polarized antenna unit consisting of a metal layer on the side and a metallized through hole connecting two layers, a 2×2 antenna sub-array consisting of a metallized through-hole cavity and 4 antenna elements, and a 16-layer antenna consisting of metallized through holes All parallel feeding network, slot for coupling feeding between feeding layer and metal cavity and antenna, Grounded Coplanar Waveguide (GCPW) for testing and Substrate Integrated Waveguide (Substrate Integrated Waveguide, SIW), but the design of the antenna is more complicated.

SUMMARY OF THE INVENTION

The present invention provides a 1×4 beam fixed traveling wave antenna, which realizes beam fixation and has the advantages of easy integration and easy processing.

For solving the above-mentioned technical problems, the technical scheme of the present invention is as follows:

A 1×4 beam fixed traveling wave antenna, comprising an upper metal plate, a lower metal plate, a dielectric plate, a main feeder, 4 branches and 4 radiation patches, wherein:

The upper metal plate, the lower metal plate and the dielectric plate are all strip-shaped, the upper metal plate is attached to the upper surface of the dielectric plate, and the lower metal plate is attached to the lower surface of the dielectric plate;

The dielectric plate has a center layer, the main feeder, 4 branches and 4 radiation patches are arranged in the center layer, the main feeder is arranged along the length direction of the dielectric plate, and the 4 branches and The main feeders are connected, the four branches are arranged along the width direction of the dielectric plate, and the four radiation patches are respectively connected to one branch.

Preferably, the dielectric plate is a solid dielectric.

Preferably, the lengths of the upper layer metal plate, the lower layer metal plate and the dielectric plate are all equal and aligned, and the widths of the upper layer metal plate and the lower layer metal plate are smaller than the width of the dielectric plate.

Preferably, the positions of the main feeder and the four branches on the central layer are in the bonding area of the upper metal plate, the lower metal plate and the dielectric plate, and the positions of the four radiating patches on the central layer are the Outside the bonding area of the upper metal plate, the lower metal plate and the dielectric plate.

Preferably, the lengths of the upper metal plate, the lower metal plate and the dielectric plate are all 60 mm.

Preferably, the width of the dielectric plate is 23mm and the thickness is 1.6mm.

Preferably, the main feeder is used for power feeding, and the length of the main feeder is 60mm and the width is 4mm.

Preferably, the four branches are all L-shaped branches, one side of the L-shaped branch is connected to the main feeder, and the interval is Lmm. The longest length of one side of the branch is equal to the width of the upper metal plate and the lower metal plate, the other side of the L-shaped branch is connected to the radiation patch, and the other sides of the four L-shaped branches are successively reduced by ΔL mm. The longest length of the other side of the 4 L-shaped branches is 3ΔL.

Preferably, the four radiation patches are all located in the center layer at a distance g mm from the bonding area of the upper metal plate, the lower metal plate and the dielectric plate.

Preferably, the antenna is made by using printed circuit board technology, and has the characteristics of easy integration and easy processing.

Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

The present invention realizes the radiation characteristic of fixed beam through the length difference of the four branches, and meanwhile, the antenna of the present invention has the characteristics of easy integration and processing, and can realize large bandwidth.

Description of drawings

1 is a perspective view of an embodiment;

Figure 2 is a top view of the embodiment;

Figure 3 is a side view of the embodiment;

FIG. 4 is a reflection coefficient and gain diagram of an embodiment;

FIG. 5 is a radiation pattern of an embodiment.

Description of reference numbers:

label name label name 1 upper metal plate 2 lower metal plate 3 Media board 4 main feeder 5 branch 6 Radiation Patch W_g Media board width L_g Media Plate Length W_m1(mm) Feeder width ε_r Dielectric Plate Dielectric Constant L_p Patch length W_p Patch width Δy(mm) branch height difference L(mm) distance between branches ΔL(mm) difference in branch length W_m(mm) branch width g(mm) The distance between the patch and the metal plate h(mm) single layer thickness L₁(mm) Patch and feeder distance

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent;

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

It will be understood by those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

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

Example 1

As shown in FIGS. 1 to 3 , this embodiment provides a 1×4 beam fixed traveling wave antenna, including an upper metal plate 1 , a lower metal plate 2 , a dielectric plate 3 , a main feeder 4 , four branches 5 and 4 Radiant Patch 6, where:

The upper metal plate 1, the lower metal plate 2 and the dielectric plate 3 are all strip-shaped, the upper metal plate 1 is attached to the upper surface of the dielectric plate 3, and the lower metal plate 2 is attached to the medium the lower surface of the plate 3;

The dielectric plate 3 has a center layer, and the main feeder 4, four branches 5 and four radiation patches 6 are arranged in the center layer. The main feeder 4 is arranged along the length direction of the dielectric plate 3, The four branches 5 are connected to the main feeder 4 , the four branches 5 are arranged along the width direction of the dielectric plate 3 , the four branches 5 have length differences, and the four radiation patches 6 are respectively Connect with a branch 5.

The dielectric plate 3 is a solid dielectric.

The upper layer metal plate 1 , the lower layer metal plate 2 and the dielectric plate 3 have the same length and are aligned and attached.

The position of the main feeder 4 and the four branches 5 on the center layer is in the bonding area of the upper metal plate 1, the lower metal plate 2 and the dielectric plate 3, and the four radiation patches 6 are located on the center layer. It is outside the bonding area of the upper metal plate 1 , the lower metal plate 2 and the dielectric plate 3 .

The lengths of the upper metal plate 1 , the lower metal plate 2 and the dielectric plate 3 are all 60 mm.

The width of the dielectric plate 3 is 23 mm and the thickness is 1.6 mm.

The main feeder 4 is used for power feeding, and the length of the main feeder 4 is 60 mm and the width is 4 mm.

The four branches 5 are all L-shaped branches 5, and one side of the L-shaped branch 5 is connected to the main feeder 4 at an interval of L mm. The longest length of one side of each L-shaped branch 5 is equal to the width of the upper metal plate 1 and the lower metal plate 2, the other side of the L-shaped branch 5 is connected to the radiation patch 6, and the four L-shaped branches 5 The other side is successively reduced by ΔL mm, and the longest length of the other side of the four L-shaped branches 5 is 3ΔL.

The four radiation patches 6 are all located in the center layer at a distance g mm from the bonding area of the upper metal plate 1 , the lower metal plate 2 and the dielectric plate 3 .

The antenna is fabricated by using printed circuit board technology.

In the specific implementation process, the antenna is assembled on a dielectric plate 3 with a dielectric constant of 2.2, a loss tangent of 0.0009, a length of 60 mm, a width of 23 mm, and a total thickness of 1.6 mm; The length is 60mm, the four branches 5, the main feeder 4 and the radiation patch 6 are in the middle layer of the dielectric plate 3, the distance L between the branches 5 is 6.7mm, the height difference Δy between the branches 5 is 0.8mm, and the distance between the branches 5 The length difference ΔL is 3.3 mm, the width W _m of the branch 5 is 0.3 mm, the length of the feeder 4 is 60 mm, and the width W _g is 4 mm.

FIG. 4 shows the reflection coefficient and gain coefficient of the antenna provided by the specific embodiment. It can be seen from FIG. 4 that the antenna impedance bandwidth (|S11|<-10dB) is about 10.4%, and the maximum gain is 4.9dBi.

FIG. 5 is a radiation pattern of the antenna provided by the specific embodiment operating at 13.0, 13.5, and 14.0 GHz. It can be seen that the pattern of the antenna is stable and the beam is fixed.

The same or similar reference numbers correspond to the same or similar parts;

The terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on this patent;

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (9)

1. A 1×4 beam fixed traveling wave antenna, characterized in that it comprises an upper layer metal plate, a lower layer metal plate, a dielectric plate, a main feeder, 4 branches and 4 radiation patches, wherein: The upper metal plate, the lower metal plate and the dielectric plate are all strip-shaped, the upper metal plate is attached to the upper surface of the dielectric plate, and the lower metal plate is attached to the lower surface of the dielectric plate; The dielectric plate has a center layer, the main feeder, 4 branches and 4 radiation patches are arranged in the center layer, the main feeder is arranged along the length direction of the dielectric plate, and the 4 branches and the main feeders are connected, the four branches are arranged along the width direction of the dielectric plate, the four branches have length differences, and the four radiation patches are respectively connected to one branch; The position of the main feeder and the four branches on the center layer is in the bonding area of the upper metal plate, the lower metal plate and the dielectric plate, and the position of the four radiation patches on the center layer is the upper metal plate. , outside the bonding area of the lower metal plate and the dielectric plate. 2 . The 1×4 beam fixed traveling wave antenna according to claim 1 , wherein the dielectric plate is a solid dielectric. 3 . 3 . The 1×4 beam fixed traveling wave antenna according to claim 2 , wherein the lengths of the upper metal plate, the lower metal plate and the dielectric plate are all equal and aligned and attached, and the upper metal plate, the lower metal plate and the The width of the metal plate is smaller than the width of the dielectric plate. 4 . The 1×4 beam fixed traveling wave antenna according to claim 3 , wherein the lengths of the upper metal plate, the lower metal plate and the dielectric plate are all 60 mm. 5 . 5 . The 1×4 beam fixed traveling wave antenna according to claim 4 , wherein the dielectric plate has a width of 23 mm and a thickness of 1.6 mm. 6 . 6 . The 1×4 beam fixed traveling wave antenna according to claim 5 , wherein the main feeder is used for power feeding, and the main feeder has a length of 60 mm and a width of 4 mm. 7 . 7. The 1×4 beam fixed traveling wave antenna according to any one of claims 1 to 6, wherein, The 4 branches include 3

type branch and 1

type branch, one end of the 4 branches is connected to the main feeder, the interval is Lmm, 3

The length of one side of the branch connected to the main feeder increases by Δymm in turn, the other ends of the four branches are connected to the radiation patch, and the three

The middle edge of the type branch decreases by ΔLmm in turn, the 3

The longest length of the middle side of the type branch is 3ΔL. 8 . The 1×4 beam fixed traveling wave antenna according to claim 7 , wherein the 4 radiating patches are located at a distance of gmm from the bonding area of the upper metal plate, the lower metal plate and the dielectric plate. 9 . in the center layer. 9 . The 1×4 beam fixed traveling wave antenna according to claim 7 , wherein the antenna is fabricated by using a printed circuit board technology. 10 .

Images