Low Profile Low RCS Fabry-Perot Resonator Antenna
A Perot resonant cavity, low profile technology, used in antennas, antenna grounding devices, electrical components, etc., can solve the problem of antenna radiation gain deterioration, and achieve the effect of broadband low RCS improvement, thickness reduction, and radiation gain enhancement
Active Publication Date: 2022-02-01
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
These materials have a good suppression effect on the structural mode items of antenna scattering, but they will also bring some deterioration to the radiation gain of the antenna.
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[0041] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0042] Such as Figure 1-7 As shown, a low-profile low-RCS Fabry-Perot resonant cavity antenna, based on a multilayer AMC structure, includes a source antenna part and an incomplete partial reflective surface part, which includes a top-down The first dielectric substrate 1 and the second dielectric substrate 2 arranged in sequence, the first dielectric substrate 1 and the second dielectric substrate 2 have the same surface area, and the upper surface of the first dielectric substrate 1 is uniformly provided with a plurality of upper layer AMC patches 4 A plurality of intermediate layer PRS patches 5 are evenly arranged between the first dielectric substrate 1 and the second dielectric substrate 2, and the lower surface of the second dielect...
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Abstract
The present invention relates to the technical field of microwave antennas, in particular to a low-profile and low-RCS Fabry-Perot resonator antenna, comprising a source antenna part and an incomplete reflective surface part, the incomplete reflective surface part comprising a first medium Substrate, the second dielectric substrate, the upper layer AMC patch, the middle layer PRS patch and the lower floor AMC patch; the source antenna part includes the third dielectric substrate, radiation patch, source antenna layer AMC patch, antenna floor, excitation probe needle and SAM probe connectors. The invention reduces the thickness of the resonant cavity from the half-wavelength to the sub-wavelength level, realizes antenna performance advantages such as low profile and high gain, and can combine the anti-phase cancellation of the multi-layer AMC structure to achieve low RCS characteristics in the broadband range (RCS suppression bandwidth is 3GHz to 18GHz), not only suitable for shipborne, airborne and vehicle-mounted military communication systems, but also suitable for realizing target ranging and positioning functions in intelligent driving systems.
Description
technical field [0001] The invention relates to the technical field of microwave antennas, in particular to a low-profile and low-RCS Fabry-Perot cavity antenna. Background technique [0002] With the development of stealth and anti-stealth technology, microstrip patch antennas with low RCS properties are becoming more and more important. In the past few decades, researchers have proposed many methods to reduce the RCS of antennas, such as using radar absorbing materials, loading lumped and distributed components, and introducing metamaterial absorbers. These materials have a good suppression effect on the structural mode items of the antenna scattering, but they will also bring some deterioration to the radiation gain of the antenna. Therefore, it has very important application requirements and research significance to realize RCS suppression in the broadband range without affecting or even improving the radiation performance (especially the radiation gain) of the antenna....
Claims
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IPC IPC(8): H01Q1/38H01Q1/48H01Q19/10
CPCH01Q1/38H01Q1/48H01Q19/10
Inventor 程友峰杨林廖成
Owner SOUTHWEST JIAOTONG UNIV