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Broadband low-RCS patch antenna based on FSS transmission and reflection cancellation

A patch antenna and patch technology, applied in the direction of antenna, antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of no broadband RCS suppression, narrow antenna working bandwidth, and unsuitable broadband antenna system, etc., to achieve Broadband reflection performance, improved scattering performance, and enhanced radiation gain effects

Active Publication Date: 2020-06-09
SOUTHWEST JIAOTONG UNIV
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  • Description
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Problems solved by technology

The disadvantage of this design is that the three RCS reduction ideas work relatively independently and do not form broadband RCS suppression
However, the antenna of this design has a narrow operating bandwidth and is not suitable for wideband antenna systems

Method used

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  • Broadband low-RCS patch antenna based on FSS transmission and reflection cancellation
  • Broadband low-RCS patch antenna based on FSS transmission and reflection cancellation
  • Broadband low-RCS patch antenna based on FSS transmission and reflection cancellation

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Embodiment Construction

[0048] 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.

[0049] Such as Figure 1 ~ Figure 4 As shown, a broadband low RCS patch antenna based on FSS transmission and passive reflection cancellation technology includes a first dielectric substrate 1 and a second dielectric substrate 2 arranged below the first dielectric substrate 1, the first dielectric The upper surface of the substrate 1 is respectively provided with a parasitic patch 5, a plurality of first AMC patch groups 3 and a plurality of second AMC patch groups 4, and the parasitic patch 5 is printed in the middle of the first dielectric substrate 1, The first AMC patch group 3 and the second AMC patch group 4 are arranged in a staggered checkerboard pattern on the upper surface of the first dielectric substrate 1, and the first AMC pat...

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Abstract

The invention belongs to the technical field of microwave antennas and relates to a broadband low-RCS patch antenna based on an FSS transmission and passive reflection cancellation technology. The patch antenna comprises a parasitic patch, an excitation patch, an antenna ground plate, a first dielectric substrate, a second dielectric substrate, an SMA probe joint and a conductor of the SMA probe join which jointly form a patch antenna part; an upper FSS patch, a lower FSS patch and the second dielectric substrate form a double-layer FSS structure part; and a first AMC patch group, a first AMCpatch group and the first dielectric substrate form a mixed AMC surface part. According to the broadband low-RCS patch antenna, two resonances of the double-layer radiation patch can be excited, so that the impedance bandwidth of the patch antenna is broadened; and transmission performance and the wave absorbing performance of a metamaterial absorber can be combined to realize a low RCS characteristic in a broadband range, so that the antenna can be applied to shipborne, airborne and vehicle-mounted military communication systems, and can also be applied to an intelligent skin system to realize stealth and communication functions.

Description

technical field [0001] The invention relates to the technical field of microwave antennas, in particular to a broadband low-RCS patch antenna based on FSS transmission and passive reflection cancellation technology. 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. Generally speaking, the RCS of an antenna mainly includes two items, namely, the structural mode item and the antenna mode item. The latter can be reduced through good matching, while the former is often difficult to suppress. In the past few decades, researchers have proposed a large number of low RCS antenna designs, and the technical means involved can be summarized into four categories: scattering absorption, scattering diffusion, reflection cancellation, and direct transmission. These four types of RCS reduction technologies have their own advantages, but also have certain applicat...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50H01Q19/10
CPCH01Q1/36H01Q1/38H01Q1/50H01Q19/10
Inventor 程友峰丁霄廖成
Owner SOUTHWEST JIAOTONG UNIV
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