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, radiating element structure form, etc., can solve the problems of no broadband RCS suppression, unsuitable broadband antenna system, and narrow antenna operating bandwidth, etc. The effect of broadband reflection performance, enhanced radiation gain, and improved scattering performance

Active Publication Date: 2021-03-16
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 relates to the field of microwave antenna technology, in particular to a broadband low RCS patch antenna based on FSS transmission and passive reflection cancellation technology, including a parasitic patch, an excitation patch, an antenna floor, a first dielectric substrate, and a second dielectric The substrate, SMA probe connector and its conductor constitute the patch antenna part, the upper FSS patch, the lower FSS patch and the second dielectric substrate constitute the double-layer FSS structure part, the first AMC patch group, the first AMC patch group , and the first dielectric substrate constitutes a hybrid AMC surface portion. The broadband low RCS patch antenna of the present invention can excite the two resonances of the double-layer radiation patch to widen the impedance bandwidth of the patch antenna, and can combine the transmission performance of the metamaterial absorber with the absorption performance of the metamaterial absorber to achieve low Features, not only can be applied to ship-borne, airborne and vehicle-mounted military communication systems, but also can be applied to the intelligent skin system to achieve 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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Patent Type & Authority Patents(China)
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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