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Dual Polarization Slant Beam Waveguide Slot Array Antenna

A slot array antenna and beam waveguide technology, which is applied to slot antennas, antennas, antenna arrays that are energized separately, etc., can solve the problems of large loss of microstrip array antennas, unfavorable structure of microstrip arrays, and high efficiency of full waveguide structures, and achieves high efficiency. gain, good circular polarization performance, the effect of reducing difficulty

Active Publication Date: 2017-05-03
ANHUI SUN CREATE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two types of low-profile planar antennas: full-waveguide structure and microstrip array. In the Ku-band, the efficiency of the full-waveguide structure is high, and the loss of the microstrip array antenna is large, especially when the input impedance of the array and patch is large (200Ω ), when the microstrip line is very narrow, the loss is greater and the manufacturing cost is high, so the microstrip array structure is not conducive to the adoption; the signal on the geosynchronous satellite is mostly transmitted by linear polarization, which has both horizontal polarization and Vertical polarization, since the latitude and longitude of the satellite over the equator is generally different from the latitude and longitude of the receiving ground, the polarization direction will change after the horizontal or vertical polarized waves sent by the satellite reach the receiving ground, and the dual-polarized oblique beam antenna must realize polarization Tracking, the beam points of the two polarizations must be basically the same, so as to ensure that the received amplitudes of the two polarizations are basically the same, and polarization tracking can be realized through the back-end circuit

Method used

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  • Dual Polarization Slant Beam Waveguide Slot Array Antenna
  • Dual Polarization Slant Beam Waveguide Slot Array Antenna
  • Dual Polarization Slant Beam Waveguide Slot Array Antenna

Examples

Experimental program
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Effect test

Embodiment 1

[0035] See figure 1 , figure 2 with image 3 The dual-polarized diagonal beam waveguide slot array antenna includes a unit array antenna, and each unit array antenna is composed of a horizontally polarized linear array and a vertically polarized linear array.

[0036] See Figure 4 , The horizontally polarized linear array includes two parallel horizontally polarized single-ridge waveguides 1. The horizontally polarized single ridge waveguide 1 has a wide-sided V-shaped radiation slot 3, and the adjacent V-shaped radiation slots 3 are arranged at equal intervals; one end of each horizontally polarized single ridge waveguide 1 is terminated with a horizontally polarized ridge waveguide to coaxial conversion The device 5 is matched with a 50 ohm SMA load; the other end is connected through a curved ridge waveguide 7 and a horizontally polarized feeder network 11, and fed through a horizontally polarized feeder waveguide 10 to form a horizontally polarized linear array, see respect...

Embodiment 2

[0044] See Picture 10 , Picture 11 with Picture 12 , Dual-polarized oblique beam waveguide slot panel antenna is composed of six unit array antennas in parallel. The feeding end of the horizontally polarized single-ridge waveguide 1 of the six horizontally polarized linear arrays passes Picture 11 The feeder network shown is synthesized, Picture 11 The feeder network shown directly terminates a curved ridge waveguide 7 connected to each single ridge waveguide. Picture 11 The feeder network shown is composed of several horizontally polarized feeder networks 11 and unequal power dividers 14. The horizontally polarized feeder network 11 functions as an equal power divider. The entire network divides the power into 12 equal parts. The main transmission waveguide of the network is a single ridge waveguide with the same size as the horizontal polarization single ridge waveguide 1, and the single ridge waveguide is converted into a half-height waveguide by the ridge waveguide to r...

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PUM

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Abstract

The invention relates to a dual-polarized oblique beam waveguide slot array antenna. The dual-polarized oblique beam waveguide slot array antenna comprises more than one unit array antenna; the unit array antenna is formed by a horizontally polarized linear array and a vertically polarized linear array; the horizontally polarized linear array and the vertically polarized linear array are arranged in a horizontal staggered mode; the horizontally polarized linear array is arranged on the upper layer; the vertically polarized linear array is arranged on the lower layer; a horizontally polarized single ridge waveguide is provided with a broadside V-shaped radiation slot; a vertically polarized single ridge waveguide is provided with a broadside U-shaped radiation slot; a feed portion is in a ridge waveguide form and accordingly the integral bandwidth of the antenna is effectively guaranteed, the antenna achieves beam inclination, meanwhile the matching bandwidth of the antenna and the radiation efficiency are guaranteed. The integral antenna can achieve a good circular polarization axial ratio characteristic and meanwhile achieve a 45-degree fixed beam inclination angle due to appropriate phase compensation of a feed network. Compared with the waveguide slot antenna at the same frequency band, the dual-polarized oblique beam waveguide slot array antenna is small in size, low in profile and effectively reduces costs due to a bolt fastening installation mode.

Description

Technical field [0001] The invention belongs to the technical field of panel antennas, and particularly relates to a dual-polarized oblique beam waveguide slot array antenna. Background technique [0002] Panel antennas are widely used in mobile communication fields such as airborne, shipborne, and vehicle-mounted. In order to meet the requirements of mobile carriers for wind resistance and the aesthetic requirements of vehicle-mounted appearance, flat antennas are required to have a low profile and miniaturization. Low-profile panel antennas can be realized in two forms: full-waveguide structure and microstrip array. In the Ku band, the full-waveguide structure has high efficiency, and the loss of microstrip array antennas is large, especially when the array and patch input impedance is large (200Ω ), when the microstrip line is very narrow, the loss is greater and the manufacturing cost is high, so the microstrip array structure is not conducive to adoption; the signals on geos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/10H01Q21/06H01Q23/00
Inventor 胡卫东金秀梅夏义全张妮
Owner ANHUI SUN CREATE ELECTRONICS
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