CN210182583U - Wave beam switchable antenna for mobile satellite - Google Patents
Wave beam switchable antenna for mobile satellite Download PDFInfo
- Publication number
- CN210182583U CN210182583U CN201920924215.0U CN201920924215U CN210182583U CN 210182583 U CN210182583 U CN 210182583U CN 201920924215 U CN201920924215 U CN 201920924215U CN 210182583 U CN210182583 U CN 210182583U
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- radiating
- antenna
- mobile satellite
- patch
- switchable antenna
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Abstract
The utility model discloses a wave beam switchable antenna facing to a mobile satellite, which comprises a medium substrate, four radiating micro-strip patches arranged in a rectangle on the upper surface of the medium substrate, and a metal grounding patch arranged on the lower surface of the medium substrate and corresponding to the radiating micro-strip patches, wherein a feed part comprises four coaxial probes corresponding to the radiating micro-strip patches one by one, and a phase shifter circuit coupled with each coaxial probe; the phase shifter circuit controls the feeding phases of the 4 element antennas. The utility model discloses an antenna adopts quaternary microstrip antenna array and moves the looks ware circuit to constitute based on microstrip antenna principle, through moving looks ware control feed phase place, realizes the beam switching to complete cover first space, trail the signal of satellite transmission, have simple structure, with low costs, miniaturized characteristics, greatly reduced system terminal equipment's space and cost, strengthened flexibility, mobility and the disguise of equipment.
Description
Technical Field
The utility model belongs to the technical field of the antenna, relate to a load on carriers such as cross country vehicle, truck, in the effective coverage area of mobile satellite, be used for the antenna device of transmission and receipt.
Background
The vehicle-mounted satellite antenna is a satellite antenna installed on an automobile, and the vehicle-mounted satellite antenna receives communication signals transmitted by a satellite, so long as the communication signals are in an effective coverage area of the satellite signals, the communication signals can be effectively received, and seamless connection is achieved. However, the current vehicle-mounted satellite antenna has the defects of complex structure, large volume, high cost and the like, and the commercial application of the vehicle-mounted satellite antenna is severely restricted.
The microstrip antenna (microstrip antenna) is an antenna formed by attaching a metal thin layer as a grounding plate on one surface of a thin medium substrate, manufacturing a metal patch with a certain shape on the other surface by using a photoetching method, and feeding the patch by using a microstrip line or a coaxial probe. Microstrip antennas have the advantages of small size, light weight, simple manufacturing process, easy realization of conformal property, etc., and are widely used. A microstrip antenna may be equivalent to a resonant cavity, having a high value near its resonant frequency, i.e., within the operating band.
The microstrip antenna can well solve the existing problems of the vehicle-mounted satellite antenna, but the microstrip antenna cannot move again after being installed, cannot switch beams, can only effectively receive signals in a certain fixed direction after being installed on a vehicle, and obviously cannot meet the requirement of seamless link of the vehicle-mounted satellite antenna.
Disclosure of Invention
The purpose of the invention is as follows: the utility model aims to provide a not enough to prior art, provide a simple structure, low cost, and the changeable antenna of wave beam towards the transmission of being convenient for and the receipt of mobile satellite of being convenient for installation.
The technical scheme is as follows: the utility model discloses a wave beam switchable antenna facing to a mobile satellite, which comprises a medium substrate, four radiating micro-strip patches which are arranged in a rectangular shape and are positioned on the upper surface of the medium substrate, and a metal grounding patch which is positioned on the lower surface of the medium substrate and corresponds to the radiating micro-strip patches in position; each radiating microstrip patch is fed through a feeding part;
the feed part comprises four coaxial probes in one-to-one correspondence with the radiating microstrip patches and a phase shifter circuit coupled with each coaxial probe; the coaxial probe penetrates through the metal grounding patch and the dielectric substrate to be coupled with the radiating microstrip patch to feed the radiating microstrip patch, and the phase shifter circuit controls the feeding phases of the 4 radiating microstrip patches.
The utility model discloses further preferred technical scheme does, and coaxial probe's inner core radius is 0.6mm, and outer core radius is 2.275mm, and relative dielectric constant is 2.55.
Preferably, the dielectric substrate has a length of 211.14mm, a width of 211.14mm, a thickness of 1.6mm and a relative dielectric constant of 4.4.
Preferably, the radiating microstrip patch is square, and the side length of the radiating microstrip patch is 35.19 mm.
Preferably, the spacing between two adjacent coaxial probes is 78 mm.
Preferably, one pair of diagonal corners of each radiating microstrip patch has a chamfer with a side length of 4.4 mm.
Has the advantages that: the utility model discloses an antenna adopts quaternary microstrip antenna array and moves the looks ware circuit to constitute based on the microstrip antenna principle, through moving looks ware control feed phase place, realizes the beam switching to complete cover first space, trail the signal of satellite transmission, simple structure has, with low costs, miniaturized characteristics, greatly reduced system terminal equipment's space and cost, strengthened the flexibility of equipment, mobility and disguise, have potential using value in on-vehicle mobile satellite communication application antenna field.
Drawings
Fig. 1 is a schematic structural diagram of the antenna of the present invention.
In the figure, 1-dielectric substrate, 2-radiating microstrip patch, 3-coaxial probe.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example (b): a wave beam switchable antenna facing a mobile satellite comprises a dielectric substrate 1, four radiating micro-strip patches 2 which are arranged in a rectangular mode and located on the upper surface of the dielectric substrate 1, and a metal grounding patch which is located on the lower surface of the dielectric substrate 1 and corresponds to the radiating micro-strip patches 2 in position. The dielectric substrate 1 has a length of 211.14mm, a width of 211.14mm, a thickness of 1.6mm, and a relative dielectric constant of 4.4. The radiating microstrip patch 2 is square with a side length of 35.19 mm. The size of the microstrip patch and the distance between the patches are adjusted, so that the resonant frequency of the antenna can be changed, the microstrip antenna can work at a required frequency point, and the bandwidth requirement is met.
The antenna adopts a coaxial feedback mode, and each radiating microstrip patch 2 feeds power through a feeding part.
The feed portion comprises four coaxial probes 3 in one-to-one correspondence with the radiating microstrip patches 2, and a phase shifter circuit coupled to each coaxial probe 3. The coaxial probe 3 passes through the metal grounding patch and the dielectric substrate 1 to be coupled with the radiation microstrip patch 2, the radiation microstrip patch 2 is fed, and the phase shifter circuit controls the feeding phase of the coaxial probe 3. Energy is input from the coaxial probe 3, the coaxial probe 3 for feeding is excited by a lumped port in simulation, the radius of an inner core and an outer core of the coaxial probe 3 for feeding needs to be adjusted, so that the coaxial probe 3 has the input impedance characteristic of 50 ohms at the working frequency, the radius of the inner core of the adjusted coaxial probe 3 is 0.6mm, the radius of the outer core is 2.275mm, the relative dielectric constant is 2.55, and the coaxial probe reaches the microstrip patch to generate effective radiation.
According to the working central frequency of the antenna, aiming at parameters such as the size of the unit antennas, the position of a feed point, the distance between the unit antennas and the like in the quaternary antenna array, the initial values of relevant parameters are obtained through theoretical calculation, and then the final values of the parameters are further determined through software simulation and optimization, and when the distance between the unit antennas is 78mm and is slightly larger than half of the wavelength, the matching and circular polarization performance of the antenna is good.
The utility model discloses a theory of operation is: four unit antennas in the antenna array are grouped into two groups along the x direction and the y direction, and the four unit antennas are equivalent to array antennas in the array. The phases of the four unit antennas are controlled through the phase shifter, corresponding to grouping along the x direction, the phase shifter feeding phase difference is +/-140 degrees, the maximum radiation direction of the wave beam is deviated to a far field two-dimensional directional diagram along the + x direction and the-x direction, and the maximum gain of 6.1dB is obtained; corresponding to grouping along the y direction, the phase difference of phase shifter feeding is +/-140 degrees, the maximum radiation direction of the wave beam is deviated to a far field two-dimensional directional diagram in the + y-y direction, and the maximum gain of 5.8dB is obtained; when the phase shifter feeds 4 unit antennas in a constant-amplitude and in-phase mode, the antenna has a far-field three-dimensional directional diagram with the maximum radiation direction facing upwards, and the maximum gain of 8.1dB is obtained. In the design of the antenna real object, the side length of a cutting angle of each radiation microstrip patch is 4.4mm, the axial ratio of the maximum radiation direction of the antenna in the + z direction is less than 3dB, the antenna real object is circular polarized, the axial ratio of the maximum radiation directions of the other 4 wave beams is also less than 3dB, the antenna real object is circular polarized, and the antenna real object has consistency.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A wave beam switchable antenna facing a mobile satellite is characterized by comprising a dielectric substrate, four radiating micro-strip patches which are arranged in a rectangular mode and are positioned on the upper surface of the dielectric substrate, and a metal grounding patch which is positioned on the lower surface of the dielectric substrate and corresponds to the radiating micro-strip patches in position; each radiating microstrip patch is fed through a feeding part;
the feed part comprises four coaxial probes in one-to-one correspondence with the radiating microstrip patches and a phase shifter circuit coupled with each coaxial probe; the coaxial probe penetrates through the metal grounding patch and the dielectric substrate to be coupled with the radiating microstrip patch to feed the radiating microstrip patch, and the phase shifter circuit controls the feeding phases of the 4 radiating microstrip patches.
2. The mobile satellite-facing beam switchable antenna of claim 1, wherein the coaxial probe has an inner core radius of 0.6mm, an outer core radius of 2.275mm, and a relative dielectric constant of 2.55.
3. The mobile satellite-facing beam switchable antenna of claim 1, wherein the dielectric substrate has a length of 211.14mm, a width of 211.14mm, a thickness of 1.6mm, and a relative dielectric constant of 4.4.
4. The mobile satellite-oriented beam switchable antenna of claim 3, wherein the radiating microstrip patch is square and has a radiating microstrip patch side length of 35.19 mm.
5. The mobile satellite-facing beam switchable antenna of claim 3, wherein a spacing between two adjacent coaxial probes is 78 mm.
6. The mobile satellite-facing beam switchable antenna of claim 4, wherein a pair of diagonal corners of each radiating microstrip patch have a chamfer with a side length of 4.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920924215.0U CN210182583U (en) | 2019-06-19 | 2019-06-19 | Wave beam switchable antenna for mobile satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920924215.0U CN210182583U (en) | 2019-06-19 | 2019-06-19 | Wave beam switchable antenna for mobile satellite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210182583U true CN210182583U (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920924215.0U Expired - Fee Related CN210182583U (en) | 2019-06-19 | 2019-06-19 | Wave beam switchable antenna for mobile satellite |
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| Country | Link |
|---|---|
| CN (1) | CN210182583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659322A (en) * | 2021-07-26 | 2021-11-16 | 西安理工大学 | Quarter-mode-based wave beam reconfigurable substrate integrated waveguide antenna |
-
2019
- 2019-06-19 CN CN201920924215.0U patent/CN210182583U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659322A (en) * | 2021-07-26 | 2021-11-16 | 西安理工大学 | Quarter-mode-based wave beam reconfigurable substrate integrated waveguide antenna |
| CN113659322B (en) * | 2021-07-26 | 2024-04-19 | 西安理工大学 | Wave beam reconfigurable substrate integrated waveguide antenna based on quarter mode |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 Termination date: 20200619 |