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Low Profile Wide Angle Scanning Waveguide Slot Array Antenna

A waveguide slot, wide-angle scanning technology, applied in antennas, antenna arrays, waveguide openings, etc., can solve the problems of inability to realize the coplanar design of the carrier, the high profile of the servo system, and the limitation of wide application, and achieve high power capacity and low cost. , Overcome the effect of high cost

Active Publication Date: 2018-07-24
BEIJING RES INST OF TELEMETRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former adopts a high profile servo system, which not only cannot achieve a coplanar design with the carrier, but is often difficult to arrange in the limited space environment of the missile, vehicle and airborne
The latter requires the use of a large number of T / R components, but at this stage, T / R components still have disadvantages such as high cost, low efficiency, and prominent heat dissipation problems, which limit their application in small-load SAR, vehicle-mounted and airborne vehicles. Wide application in communications systems

Method used

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  • Low Profile Wide Angle Scanning Waveguide Slot Array Antenna
  • Low Profile Wide Angle Scanning Waveguide Slot Array Antenna
  • Low Profile Wide Angle Scanning Waveguide Slot Array Antenna

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Experimental program
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Effect test

Embodiment

[0032] In this embodiment, the size of the low-profile wide-angle scanning waveguide slot array antenna is 297mm×172mm×35mm. After testing, the performance indicators that the antenna can obtain are as follows:

[0033] Working frequency band: Ku frequency band;

[0034] Standing wave ratio: <1.6;

[0035] Polarization method: linear polarization;

[0036] Scanning angle range: ±60°;

[0037] Side lobe level: ≤-18dB;

[0038] Table 1 shows the results of antenna standing wave ratio, gain value and beam width under different scanning angles. It can be seen from the antenna performance index obtained in this embodiment that the low-profile wide-angle scanning waveguide slot array antenna of the present invention has the advantages of low cost, low loss, low sidelobe, high gain, and high power capacity.

[0039] Table 1 The simulated standing wave ratio, gain value and beam width of the antenna at different scan angles

[0040] Antenna Specifications

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Abstract

Disclosed in the invention is a low-profile wide-angle scanning waveguide slot array antenna. The antenna is characterized in that a waveguide slot array is used as an antenna radiation array plane; and the waveguide slot radiation array, a waveguide conversion segment, a waveguide array, a dual-parallel-plate waveguide transition segment, ad a dual-parallel-plate waveguide are welded into one to form a radiation system of the low-profile wide-angle scanning waveguide slot array antenna. A waveguide slot line array is used as a main antenna feed source body; and the waveguide slot line array, a coupling slot, and feed waveguide connecting segment are welded into one to form a feed source system of the antenna. The feed source system is embedded and inserted into the dual-parallel-plate waveguide to carry out feeding on the radiation system. The feed source system can rotate in a wide-angle domain rapidly in the dual-parallel-plate waveguide around a designed rotating shaft under the drive of a servo motor.

Description

technical field [0001] The invention belongs to the technical field of beam scanning antennas, in particular to a low-profile wide-angle scanning waveguide slot array antenna. Background technique [0002] The waveguide slot array antenna has the advantages of low cost, high efficiency, and high power capacity, and can generate high-gain narrow beams in an extremely low profile. Under the existing level of precision processing, by changing the parameters such as the size, position and inclination angle of the antenna radiation slot, it is easy to control the amplitude and phase distribution of the radiation aperture, so as to achieve the low sidelobe characteristics of the radiation beam. Therefore, this type of antenna is widely used in various radar and communication systems. [0003] However, since the direction of the radiation beam of the traditional waveguide slot array antenna is fixed, in order to meet the requirements of small-load SAR, vehicle-mounted and airborne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/06H01Q1/36H01Q21/00
CPCH01Q1/36H01Q13/06H01Q21/00
Inventor 谷胜明梁丽萍鲁先龙杨雨田
Owner BEIJING RES INST OF TELEMETRY
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