CN211045721U - Antenna and antenna array - Google Patents
Antenna and antenna array Download PDFInfo
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- CN211045721U CN211045721U CN201922313037.0U CN201922313037U CN211045721U CN 211045721 U CN211045721 U CN 211045721U CN 201922313037 U CN201922313037 U CN 201922313037U CN 211045721 U CN211045721 U CN 211045721U
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Abstract
The utility model provides an antenna, including an antenna, a serial communication port, including first radiation layer, second radiation layer and the electric bridge layer of stacking gradually placing, first radiation layer includes first medium substrate and sets up first radiation piece on the first medium substrate, the second radiation layer includes second medium substrate and sets up second radiation piece on the second medium substrate, the electric bridge layer is including being used for giving the first electric bridge of first radiation piece feed with be used for giving the second electric bridge of second radiation piece feed, wherein, first radiation layer with the working frequency channel on second radiation layer is different completely. The embodiment of the utility model provides an in, adopt range upon range of radiation piece of placing two wave bands to realize two circular polarized antennas to reduce antenna installation size, optimized and synthesized antenna frequency.
Description
Technical Field
The utility model belongs to the technical field of the antenna, concretely relates to antenna and antenna array.
Background
With the development of wireless communication technology, antennas have gained wide application and important technological progress as indispensable components in wireless communication equipment. The function of the antenna is to perform energy conversion between the transmitter and the receiver and the electromagnetic waves in space. It has index characteristics of radiation directivity and polarization. Polarization refers to the orientation of its electric field vector in space when an electromagnetic wave is radiated. Common polarization directions are circular polarization, linear polarization, elliptical polarization, and the like. Depending on the polarization, the antenna can be classified into linear polarization and circular polarization (including elliptical polarization).
Among them, a circular polarized antenna is a common antenna form. Among the circularly polarized antennas, the microstrip antenna is one of the most common antenna types, and is widely used in various systems such as a radar system, a navigation system, a satellite system, and a telemetry system. The microstrip antenna with single frequency point can utilize Wilkinson power divider to directly or coupling feed. However, when the scheme is applied to the multi-frequency point microstrip antenna, the number of the antennas and the installation stations can be increased, the space is wasted, and the weight of the aircraft is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an antenna adopts range upon range of mode that sets up the radiation layer to realize the working frequency channel of two differences to practice thrift antenna installation space and saved weight.
According to the utility model discloses an aspect provides an antenna, including first radiation layer, second radiation layer and the bridge layer of stacking gradually placing, first radiation layer includes first medium substrate and sets up first radiation piece on the first medium substrate, the second radiation layer includes the second medium substrate and sets up second radiation piece on the second medium substrate, the bridge layer is including being used for giving the first bridge of first radiation piece feed and being used for giving the second bridge of second radiation piece feed, wherein, first radiation layer with the operating frequency range of second radiation layer is totally different.
Optionally, the first bridge feeds the first radiating patch with a first feed probe, and the second bridge feeds the second radiating patch with a second feed probe.
Optionally, the method further comprises: and the grounding column is used for grounding the second radiating sheet.
Optionally, a projection of a physical center of the first radiation piece on a plane where the second radiation piece is located is the same as a physical center of the second radiation piece.
Optionally, a first feeding port is disposed on the first radiating patch, the first bridge feeds power to the first radiating patch via the first feeding port, a second feeding port is disposed on the second radiating patch, and the second bridge feeds power to the second radiating patch via the second feeding port.
Optionally, the first radiation layer and the second radiation layer are both square, and projections of two diagonal lines of the first radiation layer on a plane where the second radiation layer is located are respectively collinear with the two diagonal lines of the second radiation layer.
Optionally, the first bridge and the second bridge are both disposed on the same horizontal plane below the second radiation layer, and the two bridges are located oppositely and disposed in the same direction as the extending direction of a diagonal on the second radiation layer, and projections of the two diagonal on the second radiation layer on the horizontal plane are respectively partially overlapped with the first bridge and the second bridge.
In a second aspect, there is provided an antenna array comprising as antenna elements an antenna according to any of the above.
Optionally, the antenna array further comprises: the antenna comprises a first feed network layer and a second feed network layer, wherein the first feed network layer is used for feeding a first electric bridge in each antenna unit, and the second feed network layer is used for feeding a second electric bridge in each antenna unit.
Optionally, the first feed network layer and the second feed network layer are located in the middle of two dielectric plates with the same dielectric constant.
The embodiment of the utility model provides an in, adopt range upon range of radiation piece of placing two different wave bands of form to realize two circular polarized antennas, and reduced antenna mounting dimension, optimized antenna frequency.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing embodiments of the present invention with reference to the following drawings, in which:
fig. 1a and 1b are a perspective view and a top view of an antenna provided by an embodiment of the present invention;
FIGS. 2a and 2b are perspective and top views of a first bridge and a second bridge in the bridge layer of FIG. 1;
FIGS. 3a and 3b are a perspective view and a top view of the superposition of the S-band radiating layer, the L-band radiating layer, and the bridge layer of FIG. 1;
fig. 4 is a schematic diagram of an antenna array provided in an embodiment of the present invention.
FIG. 5 shows the connection relationship of the S-band feed network layer, the L-band feed network layer, and the bridge layer in the embodiment shown in FIG. 4;
fig. 6 is a voltage standing wave ratio of L wave band according to the embodiment of the present invention;
fig. 7 is an S-band voltage standing wave ratio of an embodiment of the present invention;
fig. 8 is a result of L waveband gain simulation according to an embodiment of the present invention;
fig. 9 is a simulation result of the L wave band AX according to the embodiment of the present invention;
fig. 10 is a simulation result of the S-band gain according to the embodiment of the present invention;
fig. 11 is a simulation result of the S-band AX according to the embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, and procedures have not been described in detail so as not to obscure the present invention. The figures are not necessarily drawn to scale.
Referring to fig. 1a-1b, an antenna 10 includes, stacked in sequence from top to bottom, an S-band radiation layer 11, an L-band radiation layer 12, a bridge layer 13, an S-band feed network layer 14, a L-band feed network layer 15, and a ground layer (not shown in the figure), the S-band radiation layer 11 includes a first dielectric substrate and an S-band radiation plate (not shown in the figure) disposed on a first surface of the first dielectric substrate, the L-band radiation layer 12 includes a second dielectric substrate and a L-band radiation plate (not shown in the figure) disposed on a first surface of the second dielectric substrate, the S-band radiation layer 11 operates in the S-band, the L-band radiation layer 12 operates in the L-band, and the S-band and the L-band are two completely different operating bands.
The first surface of the first dielectric substrate and the first surface of the second dielectric substrate face in the same direction, the thickness of the first dielectric substrate may be less than the thickness of the second dielectric substrate, but the present application is not limited thereto, the S-band radiating patch is provided with a feed port 16, L-band radiating patch is also provided with a feed port (not shown in the figures). in an alternative embodiment, a conductor is coated and etched on the first surface of the first dielectric substrate to form an S-band radiating patch, and a conductor is coated and etched on the first surface of the second dielectric substrate to form a L-band radiating patch, the bridge layer 13 includes a first bridge (not shown in the figures) for feeding the S-band radiating patch of the S-band radiating layer 11 and a second bridge (not shown in the figures) for feeding the L-band radiating patch of the L-band radiating layer 12. the bridge layer 13 further includes a dielectric layer (not shown in the figures). the S-band feed network layer 14 is used to provide electrical energy L to the first bridge, and the second bridge layer 15 is used to provide electrical energy to the second bridge.
It should be noted that if the antenna described above exists as only one antenna element of an array antenna, the antenna in fig. 1 may not need to include a feeding network, and the bridges and the corresponding feeding circuits are directly electrically connected to perform feeding. As regards the feeding network, this will be described in more detail below.
Fig. 2a and 2b are perspective and top views of a first bridge and a second bridge in the bridge layer of fig. 1. as previously mentioned, the bridge layer 13 includes a first bridge 20 for feeding the S-band radiating patch of the S-band radiating layer 11 and a second bridge 30 for feeding the L-band radiating patch of the L-band radiating layer 12, continuing with fig. 2a-2b, in the bridge 20 the S-band radiating patch of the S-band radiating layer 11 is fed by a feed probe 21 and the S-band feed network layer 14 is coaxially fed by a feed line 22, in the bridge 30 the L-band radiating patch of the L-band radiating layer 12 is fed by a feed probe 31 and the L-band feed network layer 15 is coaxially fed by a feed probe 21 via a feed port 16, the feed probe 21 feeds the S-band radiating patch via a feed port 31, a feed ground post 355636 is used to connect the feed ground post L to the radiating patch of the S-band radiating patch of the radiating patch via a second feed dielectric layer L, and a ground plane conductor corresponding to the radiating patch (e.g. a radiating patch) disposed on the radiating layer 12 and a ground plane of the substrate (e.g. 3640).
In the above embodiment, as an alternative, the projection of the physical center of the S-band radiation layer 11 on the plane where the L-band radiation layer 12 is located is the same as the physical center of the L-band radiation layer 12.
In the above embodiment, as an optional implementation, the S-band radiation layer 11 and the L-band radiation layer 12 are both square, and the projection of the two diagonal lines of the S-band radiation layer 11 on the plane where the L-band radiation layer 12 is located is collinear with the two diagonal lines of the L-band radiation layer 12.
In the above embodiment, as an alternative, the first bridge and the second bridge are disposed on the same horizontal plane below the L waveband radiation layer 12, and are oppositely located and arranged in the same direction as the extension direction of one diagonal line of the L waveband radiation layer 12, and the projections of two opposite corners of the L waveband radiation layer 12 on the horizontal plane are partially overlapped with the first bridge and the second bridge, respectively, fig. 3a and 3b are a perspective view and a top view of the superposition of the S waveband radiation layer, the L waveband radiation layer and the bridge layer in fig. 1.
In the embodiment, a stacked arrangement mode is adopted, and the radiation pieces with two wave bands are adopted to realize the dual circularly polarized antenna, so that the installation size of the antenna is reduced, and the frequency of the antenna is optimized and synthesized.
In this embodiment, as an optional means, the bridges in the bridge layer may use a 3dB bridge to feed the radiation patch, so as to achieve a wider impedance and circular polarization bandwidth, and increase the thickness of the dielectric substrate, so as to improve the gain bandwidth.
Fig. 4 is a schematic diagram of an antenna array according to an embodiment of the present invention, which employs an antenna unit array of 4 × 4, as shown in the figure, each antenna unit 41 includes an S-band radiation layer, a L-band radiation layer, and a bridge layer in fig. 1, although not shown, the antenna array further includes an S-band feeding network layer and a L-band feeding network layer, and the connection relationship between the S-band feeding network layer, the L-band feeding network layer, and the bridge layer is shown in fig. 5.
FIG. 5 illustrates the connection of the S-band feed network layer, the L-band feed network layer, and the bridge layer in the embodiment shown in FIG. 4, wherein the bridges feeding the L-band radiating patches are cascaded together via the L-band feed network layer and fed via the L-band feed network layer, and likewise the bridges feeding the S-band radiating patches are cascaded together via the S-band feed network layer and fed via the S-band feed network layer, with reference to FIG. 5, four feed lines 51 connected to the L-band feed network layer are labeled on the figure for ease of understanding, and the L-band feed network layer receives power, for example, at terminal 52.
In the present embodiment, each antenna element has an L band of radiationThe physical centers of the shooting plate and the S-band radiation plate are the same, the intermediate frequency point between the L-band radiation plate and the S-band radiation plate can be determined to be 2.0GHz by combining the wavelength intervals of the two frequency bands, and the intermediate frequency point is taken
The antenna array is a planar array having an antenna element pitch of 100mm (i.e., the distance between the physical centers of the radiation plates of the two element antennas) and a size of 400mm to 600 mm.
Optionally, the L wave band feed network layer and the S wave band feed network layer may be located between two RO4350 dielectric plates with dielectric constant of 3.66, in order to reduce the influence of the network on the antenna radiation array.
Fig. 6 is L wave band voltage standing wave ratio of the embodiment of the utility model fig. 7 is the S wave band voltage standing wave ratio of the embodiment of the utility model fig. 8 is the L wave band gain simulation result of the embodiment of the utility model fig. 9 is the L wave band AX simulation result of the embodiment of the utility model fig. 10 is the S wave band gain simulation result of the embodiment of the utility model fig. 11 is the S wave band AX simulation result of the embodiment of the utility model.
As can be seen from FIGS. 6 and 7, the voltage standing wave ratio of the antenna in the whole two frequency band ranges is less than 1.5, which meets the engineering use requirements, FIGS. 8 and 9 show that the minimum gain of the L band antenna at the high, medium and low frequency points is 17dBi, the circular polarization axial ratio is less than 3dB, which meets the engineering use requirements, FIGS. 10 and 11 show that the minimum gain of the S band antenna at the high, medium and low frequency points is 20dBi, and the circular polarization axial ratio is less than 3dB, which meets the engineering use requirements.
The utility model discloses the design of embodiment can be used to ground to track aircraft. The transmitted wave is left-hand circularly polarized, and the echo of the wave on the aircraft is changed into right-hand circularly polarized wave which is just received by the right-hand circularly polarized antenna. The antenna covers dual frequency bands, so that the installation space is saved, and the miniaturization is realized.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. For example, in practical applications, the above module functions may be divided into different functional structures different from the embodiments of the present invention according to different needs, or several functional modules in the embodiments of the present invention may be combined and decomposed into different functional structures. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. An antenna, comprising a first radiation layer, a second radiation layer and a bridge layer, which are sequentially stacked, wherein the first radiation layer comprises a first dielectric substrate and a first radiation patch arranged on the first dielectric substrate, the second radiation layer comprises a second dielectric substrate and a second radiation patch arranged on the second dielectric substrate, and the bridge layer comprises a first bridge for feeding the first radiation patch and a second bridge for feeding the second radiation patch, wherein the operating frequency bands of the first radiation layer and the second radiation layer are completely different.
2. The antenna of claim 1, wherein the first bridge feeds the first radiating patch with a first feed probe and the second bridge feeds the second radiating patch with a second feed probe.
3. The antenna of claim 1, further comprising: and the grounding column is used for grounding the second radiating sheet.
4. The antenna of claim 1, wherein a projection of a physical center of the first radiating patch onto a plane on which the second radiating patch is located is the same as a physical center of the second radiating patch.
5. The antenna of claim 1, wherein a first feeding port is provided on the first radiating patch, the first bridge feeds the first radiating patch via the first feeding port, a second feeding port is provided on the second radiating patch, and the second bridge feeds the second radiating patch via the second feeding port.
6. The antenna of claim 1, wherein the first radiation layer and the second radiation layer are both square, and projections of two diagonal lines of the first radiation layer on a plane where the second radiation layer is located are respectively collinear with the two diagonal lines of the second radiation layer.
7. The antenna according to claim 1, wherein the first bridge and the second bridge are disposed on a same horizontal plane below the second radiation layer, and are located opposite to each other and oriented in a direction same as an extension direction of a diagonal line on the second radiation layer, and projections of the two diagonal lines on the second radiation layer on the horizontal plane are partially overlapped with the first bridge and the second bridge, respectively.
8. An antenna array comprising a plurality of antennas according to any one of claims 1 to 7 as antenna elements.
9. An antenna array according to claim 8, further comprising: the antenna comprises a first feed network layer and a second feed network layer, wherein the first feed network layer is used for feeding a first electric bridge in each antenna unit, and the second feed network layer is used for feeding a second electric bridge in each antenna unit.
10. An antenna array according to claim 9, wherein the first feed network layer and the second feed network layer are located in the middle of two dielectric plates having the same dielectric constant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922313037.0U CN211045721U (en) | 2019-12-20 | 2019-12-20 | Antenna and antenna array |
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| CN201922313037.0U CN211045721U (en) | 2019-12-20 | 2019-12-20 | Antenna and antenna array |
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| CN211045721U true CN211045721U (en) | 2020-07-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490656A (en) * | 2020-12-08 | 2021-03-12 | 西安电子科技大学 | Small circularly polarized GPS-BD microstrip antenna with positioning capability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490656A (en) * | 2020-12-08 | 2021-03-12 | 西安电子科技大学 | Small circularly polarized GPS-BD microstrip antenna with positioning capability |
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Effective date of registration: 20230410 Address after: 518000 Room 201, no.1301-38, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Guangqi High-end Equipment Technology Research and Development Co.,Ltd. Address before: 710000 second floor, building B3, yunhuigu, 156 Tiangu 8th Road, software new town, Xi'an high tech Zone, Xi'an City, Shaanxi Province Patentee before: Xi'an Guangqi Advanced Technology Research Institute |