Analysis and Reduction on in-Band RCS of Fabry-Perot Antennas

Gan, Lei; Jiang, Wen; Chen, Qiang; Li, Xiaoqiu; Zhou, Zhipeng

doi:10.1109/access.2020.3015050

Cited by 11 publications

(5 citation statements)

References 32 publications

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“…Therefore, it is necessary to take some measures to reduce the RCS of FP resonator antenna. This can help the antenna achieve radar stealth [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Wideband RCS Reduction of Fabry-Perot Resonator Antenna Based on Diffuse Scattering Method

Feng,

Xie

2024

PIER M

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Three methods to reduce the RCS of Fabry-Perot (FP) resonator antenna using diffuse scattering are verified and compared in this paper. They are 1 bit random coding, 2 bit random coding, and 2 bit random phase gradient coding method. In order to realize reflection phase coding, a receiver-transmitter type unit with adjustable reflection phase from top side is proposed. Metasurface (MS) composed of this unit is the best choice to achieve the RCS reduction of FP resonator antenna, because it has the ability to independently control the reflection phase on both sides. By changing the size of radiation patch, two units with 90 • reflection phase difference and four units with 90 • reflection phase difference from top side can be obtained. They are used to compose MSs with different reflection phase distributions. These MSs can form FP resonator antennas with RCS reduction characteristics. Subsequently, three antennas are fabricated and tested, and the test results are compared. The results show that the FP resonator antenna using 2-bit random phase gradient coding has the best performance. It achieves the wideband RCS reduction of antenna and has the least influence on radiation performance. The proposed antenna A3 achieves an average RCS reduction of 12 dB over the bandwidth range of 7.7-13.7 GHz while maintaining a peak gain of 18 dB and good radiation patterns.

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“…Therefore, it is necessary to take some measures to reduce the RCS of FP resonator antenna. This can help the antenna achieve radar stealth [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Wideband RCS Reduction of Fabry-Perot Resonator Antenna Based on Diffuse Scattering Method

Feng,

Xie

2024

PIER M

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“…Following this approach, many polarization conversion surfaces (PCS), which yield 180 ± 30 • reflection phase variations between two neighboring cells, have been used in FPAs to reduce RCS within a wide frequency range [11], [12], [13], [14], [15], [16], [17], [18], [19]. 3) Several other techniques were also applied in FPAs for RCS reduction, which include coding metasurface [20], [21], phase gradient metasurface [22], [23], receivertransmitter metasurface [24], phase delay line [25], asymmetric electromagnetic absorption [26]. These techniques are effective only in a typically narrow bandwidth.…”

Section: Introductionmentioning

confidence: 99%

A High-Gain Filtering Fabry-Perot Antenna With RCS Reduction

Le-Huu,

Dang Le,

et al. 2023

IEEE Access

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A high-gain filtering Fabry-Perot antenna (FPA) with radar cross section (RCS) reduction is proposed. The design utilizes a partially reflecting surface (PRS) which is integrated with a chessboard arranged metasurface (CAMS) in a single-layered substrate. The CAMS is composed of periodic strip arrays to reduce monostatic RCS based on the phase cancellation principle. The PRS structure is a cross-slot array which is designed to work with both orthogonal orientations of the CAMS elements while yielding a high reflection magnitude. Accordingly, the proposed FPA achieves a high-gain broadside radiation and wideband RCS reduction. The filtering functionality is achieved from a T-shaped feed patch, which is, interestingly, enhanced by the integration of CAMS in the PRS. For validation, a prototype operating at 6.0 GHz has been fabricated and measured. The antenna with an overall size of 3.2λ 0 × 3.2λ 0 × 0.57λ 0 at 6.0 GHz exhibits an impedance matching bandwidth (BW) of 5.73−6.23 GHz, a 3-dB gain BW of 5.76−6.17 GHz with the peak gain of 14.63 dBi, and an out-of-band suppression of ≥ 20 dB. Meanwhile, it achieves an RCS-reduction bandwidth of about 4.0 to 9.0 GHz (76.9%).INDEX TERMS Fabry-Perot antennas (FPA), partially reflecting surface, radar cross section, chessboard arrangement, polarization conversion, filtering antenna.

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“…Many methods are reported to design low RCS FP resonator antenna. [9][10][11][12][13][14][15] Among them, arranging the unit cells of PRS in a checkerboard pattern is an effective way to achieve RCS reduction. [10][11][12][13] In Reference 11, a chessboard arranged metamaterial superstrate composed by two types selective surfaces (FSS) is used as the PRS of the FP resonator antenna.…”

Section: Introductionmentioning

confidence: 99%

“…So, it is necessary to reduce the RCS for the purpose of antenna stealth. Many methods are reported to design low RCS FP resonator antenna 9‐15 . Among them, arranging the unit cells of PRS in a checkerboard pattern is an effective way to achieve RCS reduction 10‐13 .…”

Section: Introductionmentioning

confidence: 99%

Circularly polarized Fabry–Perot antenna with well RCS reduction property

Xie

Wang

2022

Int J RF Mic Comp-Aid Eng

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A circularly polarized (CP) Fabry-Perot (FP) resonator antenna with well radar cross section (RCS) reduction property is presented in this article. Wideband and well in-band RCS reduction for both x-and y-polarized waves are obtained by the proposed antenna. A polarization conversion metasurface (PCM) is designed to make the antenna realize circularly polarized radiation and RCS reduction simultaneously. The PCM consists of two unit cells which show same polarization conversion capability but 180 reflection phases difference when the wave incident from the top side. The polarization conversion capability can make the antenna realize circularly polarized radiation, while the chessboard arrangement of two unit cells can reduce the RCS of the antenna. Besides, the high reflectivity of the PCM also make the antenna obtain high gain and well in-band RCS reduction property. The radiation and scattering performance of the antenna is verified by the measured results of the fabricated antenna. The antenna obtains maximum gain of 13.9 dBic at 10 GHz and average RCS reduction of 10 dB in the band of 6-16 GHz. Besides, the RCS reduction of the antenna at 10 GHz for both polarizations are all large than 14 dB.

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Analysis and Reduction on in-Band RCS of Fabry-Perot Antennas

Cited by 11 publications

References 32 publications

Wideband RCS Reduction of Fabry-Perot Resonator Antenna Based on Diffuse Scattering Method

Wideband RCS Reduction of Fabry-Perot Resonator Antenna Based on Diffuse Scattering Method

A High-Gain Filtering Fabry-Perot Antenna With RCS Reduction

Circularly polarized Fabry–Perot antenna with well RCS reduction property

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