CN113948859A

CN113948859A - Microstrip antenna

Info

Publication number: CN113948859A
Application number: CN202111283533.1A
Authority: CN
Inventors: 陈智达; 张洪滔; 蔡仕存
Original assignee: Harxon Corp
Current assignee: Harxon Corp
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-01-18

Abstract

The application relates to a microstrip antenna, relates to satellite mobile communication technology field, and the microstrip antenna includes: a base plate; the plurality of substrates are sequentially arranged on one side surface of the bottom plate, and comprise first substrates connected with the bottom plate; and the fence is fixed on the first substrate along one end of the fence in the height direction and surrounds the rest of the substrates. The setting of this application rail is under the unchangeable condition of radiant efficiency, turns into the electric current of vertical direction with the electric current of this application horizontal direction, effectively improves microstrip antenna's working width not wide enough, and half-power beam width is not wide enough current situation to improve the low angle of elevation gain index of product, increased the signal radiation scope.

Description

Microstrip antenna

Technical Field

The application relates to the technical field of satellite mobile communication, in particular to a microstrip antenna.

Background

The antenna types commonly used in satellite mobile communication mainly include quadrifilar helix antennas, microstrip patch antennas and the like. The microstrip antenna has the advantages of small volume, low processing cost, easy conformal property, simple manufacture, easy integration and the like, is attracted more and more attention, and is widely applied to the fields of radar, mobile communication, satellite communication, global satellite positioning system and the like, wherein the circularly polarized microstrip antenna is most widely applied in the current application.

Antennas for satellite communication systems also need to have bandwidth in the operating band and high gain at low elevation angles. However, the frequency band of the currently common circularly polarized microstrip antenna is not wide enough, and the half-power lobe width is not wide enough, so that the signal coverage is narrow.

Disclosure of Invention

The present application is directed to a microstrip antenna, which can improve the phenomena that the frequency band of the microstrip antenna is not wide enough and the half-power lobe width is not wide enough, and improve the signal coverage.

To this end, in a first aspect, an embodiment of the present application provides a microstrip antenna, including: a base plate; the plurality of substrates are sequentially arranged on one side surface of the bottom plate, and comprise first substrates connected with the bottom plate; and the fence is fixed on the first substrate along one end of the fence in the height direction and surrounds the rest of the substrates.

Through above-mentioned technical scheme, the rail is fixed in first base plate, and the rail encircles remaining polylith base plate, and the setting of rail is under the unchangeable condition of radiant efficiency, turns into the electric current of vertical direction with the electric current of this application horizontal direction, effectively improves microstrip antenna's working width not wide enough, and half power beam width is not wide enough current situation to improve the low angle of elevation gain index of product, increased signal radiation scope.

In a possible implementation manner, the fence comprises a blocking portion, the blocking portion is fixed on the first substrate, the blocking portion is formed by bending a plate and connecting the head of the plate, or a plurality of side plates are formed in a blocking manner.

Through above-mentioned technical scheme, enclose fender portion and can constitute by a whole board, also can enclose by the polylith curb plate and establish and form, when the rail only had a whole board to constitute, the rail improves microstrip antenna's working width not wide enough this moment, and half power beam width is not wide enough current situation effect best, and the signal radiation scope is widest.

In a possible implementation manner, a grid part is formed at one end, away from the first substrate, of the enclosing part.

Through above-mentioned technical scheme, enclose fender portion shaping and have grid portion, the setting of grid portion can be arbitrary with the electric current of horizontal direction transform into the electric current of vertical direction, and the setting of grid portion has reduced the material of enclosing fender portion.

In a possible implementation manner, one end of the enclosing part, which is far away from the first substrate, is bent to form a folded part, and one end of the folded part, which is far away from the enclosing part, is deviated from the fence inner cavity.

Through above-mentioned technical scheme, the accessible turns over the book to the height of rail is adjusted, selects suitable rail height.

In a possible implementation manner, the plurality of substrates further include a second substrate, a third substrate and a fourth substrate, which are sequentially fixed on the same side of the first substrate, and the plurality of substrates are provided with radiation patches.

Through above-mentioned technical scheme, mutual interference between the polylith base plate can be avoided in the setting of radiation paster.

In a possible implementation manner, one end of the fence departing from the first substrate extends out of a side surface of the second substrate far away from the first substrate, a distance between a position 5mm away from the first substrate and the first substrate is a limit distance, and a distance between one end of the fence departing from the first substrate and the first substrate is smaller than the limit distance.

Through the technical scheme, when one end of the fence, which is far away from the first substrate, does not extend out of the side face, which is far away from the first substrate, of the second substrate, and one end of the fence, which is far away from the first substrate, exceeds the limit distance, the fence has poor effect on improving the current situation that the working width of the microstrip antenna is not wide enough and the half-power beam width is not wide enough, and when one end of the fence, which is far away from the first substrate, extends out of the side face, which is far away from the first substrate, of the second substrate and one end of the fence, which is far away from the first substrate, does not exceed the limit distance, the fence has good effect on improving the current situation that the working width of the microstrip antenna is not wide enough and the half-power beam width is not wide enough.

In one possible implementation, the rail is a metal rail.

Through above-mentioned technical scheme, the material of rail can be any one in copper, iron, the aluminium material, but not only is not limited to above-mentioned material, can be arbitrary conductive metal.

In one possible implementation, the barrier portion and the first substrate are spot-welded by a welding sheet.

Through above-mentioned technical scheme, enclose the welding mode of fender portion and first base plate and pass through the welding piece welding, the welding piece can provide the holding power to enclosing fender portion, reduces to enclose the crooked condition emergence of fender portion, makes the welding of enclosing fender portion and first base plate more stable through the welding piece welding.

In a possible implementation, the polylith welding piece evenly distributed in all sides of rail, the department of buckling that encloses the fender portion all is equipped with the welding piece, just the middle part of enclosing the side of fender portion is equipped with the welding piece.

In a possible implementation manner, a welding groove is formed in a side surface of the first substrate, which is away from the bottom plate, and one end of the surrounding and blocking part extends into the welding groove and is welded with the first substrate.

Through above-mentioned technical scheme, the setting of welding groove is convenient for the installation of rail, and the welding groove can tentatively fix a position the rail to reduce and enclose the probability that fender portion takes place crooked when the welding, improve the welding stability of rail.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the microstrip antenna provided by the embodiment of the application comprises a bottom plate; the plurality of substrates are sequentially arranged on one side surface of the bottom plate, and comprise first substrates connected with the bottom plate; and the fence is fixed on the first substrate along one end of the fence in the height direction and surrounds the rest of the substrates. The setting of this application rail under the unchangeable condition of radiant efficiency, turns into the electric current of vertical direction with the electric current of this application horizontal direction, effectively improves microstrip antenna's working width not wide enough, and half-power beam width is not wide enough current situation to improve the low angle of elevation gain index of product, increased the signal radiation scope.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts. In addition, in the drawings, like parts are denoted by like reference numerals, and the drawings are not drawn to actual scale.

FIG. 1 shows a first general structural diagram of an embodiment of the present application;

FIG. 2 shows a cross-sectional view of FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of the embodiment of the present application;

FIG. 4 shows a cross-sectional view of FIG. 3;

FIG. 5 shows a third schematic diagram of the overall structure of the embodiment of the present application;

FIG. 6 shows a cross-sectional view of FIG. 5;

FIG. 7 shows a first simulation test data plot for a conventional microstrip antenna;

FIG. 8 illustrates a second simulation test data plot for a conventional microstrip antenna;

fig. 9 shows a first simulation test data diagram of the microstrip antenna according to the embodiment of the present application;

fig. 10 shows a simulation test data diagram two of the microstrip antenna according to the embodiment of the present application.

Description of reference numerals: 1. a base plate; 2. a first substrate; 3. a surrounding baffle part; 4. a grid part; 5. a folding part; 6. a second substrate; 7. a third substrate; 8. a fourth substrate; 9. and (6) welding the sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 shows a schematic diagram of an overall structure of an embodiment of the present application, fig. 2 shows a cross-sectional view of fig. 1, fig. 3 shows a schematic diagram of an overall structure of an embodiment of the present application, fig. 4 shows a cross-sectional view of fig. 3, fig. 5 shows a schematic diagram of an overall structure of an embodiment of the present application, fig. 6 shows a cross-sectional view of fig. 5, fig. 7 shows a first simulation test data graph of a conventional microstrip antenna, fig. 8 shows a second simulation test data graph of a conventional microstrip antenna, fig. 9 shows a first simulation test data graph of a microstrip antenna of an embodiment of the present application, and fig. 10 shows a second simulation test data graph of a microstrip antenna of an embodiment of the present application.

The specific structure of the microstrip antenna provided in the embodiments of the present application is further described in detail below with reference to fig. 1 to 10.

As shown in fig. 1 to 6, an embodiment of the present application provides a microstrip antenna, which includes a bottom plate 1 and a plurality of substrates sequentially disposed on a side surface of the bottom plate 1, where the plurality of substrates include a first substrate 2 connected to the bottom plate 1. This application still includes the rail, is fixed in first base plate 2 along the one end of self direction of height, and the rail encircles remaining polylith base plate.

It should be understood that the bottom plate 1 is a cylinder, the bottom plate 1 is provided with a plurality of through holes for connecting with other components, the number of the through holes in the embodiment is 4, and the through holes are uniformly distributed on the bottom plate 1. The multi-substrate is fixed in the same side of bottom plate 1 in proper order, and wherein, the base plate of being connected with bottom plate 1 is first base plate 2, and first base plate 2 is for being the cylinder with 1 coaxial settings of bottom plate, and first base plate 2's radius is the same with bottom plate 1's radius, and first base plate 2 is fixed through the butt fusion mode with bottom plate 1, also adopts the butt fusion to carry out reciprocal anchorage between the multi-substrate. The fence is perpendicular to the first substrate 2, and due to machining precision or errors, an included angle between the fence and the first substrate can float at about 90 degrees; the rail deviates from a side face welded fastening of bottom plate 1 along self direction of height's one end and first base plate 2, and the rail centers on remaining polylith base plate, and this application is through the method that increases antenna space current perturbation, under the unchangeable circumstances of radiant efficiency, turns into the electric current of this application horizontal direction into vertical direction.

Fig. 7 shows a first simulation test data graph of a conventional microstrip antenna, fig. 8 shows a second simulation test data graph of the conventional microstrip antenna, fig. 9 shows a first simulation test data graph of the microstrip antenna according to the embodiment of the present application, and fig. 10 shows a second simulation test data graph of the microstrip antenna according to the embodiment of the present application. Table 1 is a data table of simulation tests of conventional microstrip antennas and the microstrip antenna of the present application.

Table 1 simulation data test table

	Fence with	Without adding a fence
			Vertex gain (dB)	4.58	5.61 5
Gain at 5 degree elevation (dB)	-4.34	-9.79
			0 degree elevation gain (dB)	-6.58	-12.62
10dB beam width	178	156

Referring to fig. 7-10 and table 1, it can be seen that the arrangement of the fence according to the present invention can effectively improve the current situations that the working width of the microstrip antenna is not wide enough and the half-power beam width is not wide enough, thereby improving the low elevation gain index of the product and increasing the signal radiation range.

Referring to fig. 1 and 2, further, the fence includes a surrounding portion 3, the surrounding portion 3 is fixed to the first substrate 2, and the surrounding portion 3 is formed by bending a whole plate and connecting the whole plate to the head, or by surrounding a plurality of side plates. Wherein remaining polylith base plate can be cuboid structure or cylinder structure, encloses the conformal design of fender portion 3 and remaining polylith base plate: when the rest of the plurality of substrates are in a cuboid structure, the enclosure part 3 can be bent around the rest of the plurality of substrates through a whole plate, and the whole plate is connected end to form a square tube which is covered on the rest of the plurality of substrates; enclose fender portion 3 also can encircle remaining polylith base plate for the polylith flat board and form, adopts four blocks of flat boards in this embodiment, and four blocks of flat board height flush are fixed in the week side of remaining polylith base plate respectively. When surplus polylith base plate is the cylinder structure, enclose 3 accessible whole board bending of fender portion and end to end formation pipes, the inner chamber adaptation of pipe is located surplus polylith base plate cover in surplus polylith base plate, also can encircle the week side formation of surplus polylith base plate through the highly flush arc board of polylith.

Through the test, when the rail only included fender portion 3, fender portion 3 was enclosed by a whole board bending when forming, the horizontal current of this application turned into the current effect of vertical direction best, and signal radiation scope is widest.

In some embodiments, the enclosure portion 3 is formed by a plurality of side plates for the convenience of processing and installation of the enclosure.

Referring to fig. 3 and 4, in some embodiments, a grid portion 4 is formed at one end of the enclosure portion 3 away from the first substrate 2, the grid portion 4 and the enclosure portion 3 are integrally formed, the arrangement of the grid portion 4 can still convert the horizontal current of the present application into a vertical current, and the arrangement of the grid portion 4 can reduce the usage amount of the fence and reduce the material cost of the fence.

Referring to fig. 5 and 6, in some embodiments, the end of the barrier portion 3 away from the first substrate 2 is bent to form a folded portion 5, and the end of the folded portion 5 away from the barrier portion 3 faces away from the inner cavity of the fence. The arrangement of the folding part 5 can adjust the height direction of the fence, thereby adjusting the effect of converting horizontal current into vertical current; one end of the turning part 5, which is far away from the blocking part 3, deviates from the inner cavity of the fence, so that the signal radiation of the residual substrate in the fence is not influenced. During installation, one end of the enclosing part 3 is bent to form the folded part 5, and then one end of the enclosing part 3, which is far away from the folded part 5, is installed on the first substrate 2.

Referring to fig. 1 to 6, further, the plurality of substrates further include a second substrate 6, a third substrate 7, and a fourth substrate 8, and are sequentially fixed on the same side of the first substrate 2, and the plurality of substrates are provided with radiation patches. The first substrate 2 and the second substrate 6 are made of F4BM-2 high-frequency plates, and the third substrate 7 and the fourth substrate 8 are made of TAP-2 high-frequency plates; the second substrate 6, the third substrate 7, the fourth substrate 8 and the first substrate 2 are coaxially arranged and are parallel to each other, the second substrate 6 is welded to the surface of the first substrate 2 departing from the bottom plate 1, the third substrate 7 is welded to the surface of the second substrate 6 departing from the first substrate 2, and the fourth substrate 8 is welded to the surface of the third substrate 7 departing from the second substrate 6. The cross-sectional areas of the first substrate 2, the second substrate 6, the third substrate 7, and the fourth substrate 8 decrease in this order. In order to facilitate the installation of the fence, the corners of the second substrate 6 are chamfered. The surfaces of the first substrate 2, the second substrate 6, the third substrate 7 and the fourth substrate 8 are all provided with radiation patches, the radiation patches are made of copper, and the radiation patches are arranged so that the substrates do not interfere with each other.

Further, one end of the fence, which is far away from the first substrate 2, extends out of the side face, which is far away from the first substrate 2, of the second substrate 6, the distance between the position, which is far away from the first substrate 2, of the fourth substrate 8 and the first substrate 2 is a limit distance, and the distance between one end of the fence, which is far away from the first substrate 2, and the first substrate 2 is smaller than the limit distance. When the end of the fence far from the first substrate 2 does not extend out of the side surface of the second substrate 6 far from the first substrate 2, and the end of the fence far from the first substrate 2 exceeds the limit distance, the fence has poor effect on improving the current situation that the working width of the microstrip antenna is not wide enough and the half-power beam width is not wide enough. When the end of the fence far from the first substrate 2 extends beyond the second substrate 6 and does not extend beyond the limit distance, the fence can be formed by the enclosure portion 3 alone, the fence formed by the enclosure portion 3 and the grid portion 4, or the fence formed by the enclosure portion 3 and the folded portion 5.

Further, the fence is a metal fence. The metal used for the enclosure includes, but is not limited to, one of the following: and materials capable of conducting electricity, such as iron, aluminum, and copper.

Referring to fig. 1 to 6, the dam 3 and the first substrate 2 are optionally spot-welded by a weld tab 9. Enclose that the one end of fender portion 3 orientation first base plate 2 is provided with a plurality of welding pieces 9, and welding piece 9 is the metal material, and welding piece 9 welds with first base plate 2 towards the one end of first base plate 2, and welding piece 9 orientation encloses the side of fender portion 3 and encloses the attached and welding of fender portion 3. The one side that welding piece 9 deviates from to enclose fender portion 3 is the cambered surface, reduces the probability that operating personnel was cut, and welding piece 9's setting not only improves the welding stability who encloses fender portion 3 and first base plate 2, still carries out auxiliary stay to the rail simultaneously, reduces the crooked condition of rail and takes place.

In some embodiments, the welding sheets 9 are uniformly distributed on the periphery of the fence, the welding sheets 9 are disposed at the bent portions of the surrounding barrier 3, and the welding sheets 9 are disposed in the middle of the side surfaces of the surrounding barrier 3. When the rail is formed by the bending of the whole plate, the welding sheets 9 are uniformly distributed on the circumference of the enclosure part 3, and the welding sheets 9 are uniform in size, so that the welding sheets 9 can uniformly support the rail everywhere. When the rail is enclosed by the polylith curb plate and is established the formation, polylith welding piece 9 divide into two sets ofly, a set of junction that is located to enclose fender portion 3, thereby connect and support two piece adjacent curb plate junctions, reduce and enclose the probability that fender portion 3 takes place deformation in the junction, a set of side middle part that is located to enclose fender portion 3, the welding piece 9 that is located to enclose fender portion 3 middle part is greater than the welding piece 9 that is located the junction, thereby improve the supporting effect of welding piece 9 to the curb plate, make the welding of rail and first base plate 2 more stable, improve the effect that the electric current of this application horizontal direction turned into the electric current of vertical direction, low elevation gain has further been improved.

In some embodiments, the side of the first substrate 2 facing away from the base plate 1 is provided with a welding groove, and one end of the enclosure 3 extends into the welding groove and is welded with the first substrate 2. When needing to understand, the welding groove is located the one side that first base plate 2 deviates from bottom plate 1, and the welding groove adaptation is in the rail, and the welding groove encircles the week side of polylith base plate. When installing the rail, the rail inserts in the welding groove towards the one end of first base plate 2 to fix a position the rail, the probability that the rail takes place to be crooked when reducing the later stage to rail and first base plate 2's welded fastening.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that "on … …", "above … …" and "above … …" in this disclosure should be interpreted in its broadest sense such that "on … …" means not only "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above … …" or "above … …" includes not only the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).

Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A microstrip antenna, comprising:

a base plate;

the plurality of substrates are sequentially arranged on one side surface of the bottom plate, and comprise first substrates connected with the bottom plate;

and the fence is fixed on the first substrate along one end of the fence in the height direction and surrounds the rest of the substrates.

2. The microstrip antenna of claim 1, wherein the enclosure comprises a surrounding portion fixed to the first substrate, and the surrounding portion is formed by bending a plate and connecting the plate at the head, or formed by surrounding a plurality of side plates.

3. The microstrip antenna of claim 2 wherein the fence portion is formed with a grid portion at an end of the fence portion away from the first substrate.

4. The microstrip antenna according to claim 2, wherein an end of the baffle portion away from the first substrate is bent to form a folded portion, and an end of the folded portion away from the baffle portion is away from the fence inner cavity.

5. The microstrip antenna of claim 1, wherein the plurality of substrates further comprises a second substrate, a third substrate and a fourth substrate, and are sequentially fixed on the same side of the first substrate, and the plurality of substrates are provided with the radiation patches.

6. The microstrip antenna of claim 5, wherein an end of the fence facing away from the first substrate extends beyond a side of the second substrate away from the first substrate, a distance from the fourth substrate to the first substrate is a limit distance at 5mm away from the first substrate, and a distance from the end of the fence facing away from the first substrate to the first substrate is less than the limit distance.

7. The microstrip antenna of claim 1 wherein the fence is a metal fence.

8. The microstrip antenna of claim 3 or claim 4, wherein the fence is spot welded to the first substrate by a solder tab.

9. The microstrip antenna according to claim 8, wherein a plurality of the soldering tabs are uniformly distributed around the fence, the soldering tabs are disposed at the connection points of the shielding portions, and the soldering tabs are disposed in the middle of the side surfaces of the shielding portions.

10. The microstrip antenna according to claim 2, wherein a side of the first substrate facing away from the bottom plate is provided with a welding slot, and one end of the baffle extends into the welding slot and is welded with the first substrate.