RCS Reduction and Gain Enhancement for the Circularly Polarized Array by Polarization Conversion Metasurface Coating

Hong, Tao; Wang, Shuai; Liu, Zhengyan; Gong, Shuxi

doi:10.1109/lawp.2018.2884944

Cited by 69 publications

(30 citation statements)

References 13 publications

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“…The associate editor coordinating the review of this manuscript and approving it for publication was Yejun He . by the radiated wave and the reflected wave, of which the amplitude is same and the phase has a difference of 90 • [10]. The four-element CP microstrip antenna array with a feed network, which uses the technique of sequentially rotated series-parallel stub, has been studied in [11].…”

Section: Introductionmentioning

confidence: 99%

Wideband Circularly Polarized Magneto-Electric Dipole $1\times2$ Antenna Array for Millimeter-Wave Applications

Ying-fang

Zhang

et al. 2020

IEEE Access

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A novel wideband circularly polarized (CP) magneto-electric (ME) dipole 1 × 2 antenna array for millimeter-wave applications is presented in this paper. The magneto-electric dipole of a single radiator is designed by combining a pair of loaded short-circuited metallic patches acting as electric dipole with a bowtie-shape aperture and a pair of vertical metallic posts functioned as a magnetic dipole. The pair of metallic patches is fed by the bowtie-shape aperture etched on the top surface of shorted-end substrate integrated waveguide (SIW). By chamfering and adding perturbation on each rectangular patch, the proposed ME dipole antenna realizes circular polarization radiation. Measured results show that the proposed single radiator has an impedance bandwidth of 27.1% (24.29 to 31.9GHz) for S11<-10dB, an axial-ratio (AR) bandwidth of 9.7% (27.4 to 30.2GHz) for AR<3dB, and a stable gain of 7dBic. In order to extend AR bandwidth, the array antenna is implemented in a 1 × 2 arrangement and fed by a complementary SIW power distribution phase shifter. The proposed antenna has a simple structure and can be realized by PCB process, which is very convenient for mass production. Measured results demonstrate that the proposed 1 × 2 antenna array has a wide impedance bandwidth of 25% for S11<-10dB, a stable gain of 10dBic and an axial-ratio bandwidth of 24.7% for AR<3dB, which is 2.4 times higher than the 3-dB AR bandwidth of a single radiator. INDEX TERMS Circularly polarized, magneto-electric dipole, wideband, perturbation, chamfer.

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Section: Introductionmentioning

confidence: 99%

Wideband Circularly Polarized Magneto-Electric Dipole $1\times2$ Antenna Array for Millimeter-Wave Applications

Ying-fang

Zhang

et al. 2020

IEEE Access

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“…The structure obtained an AR BW bigger than 200 MHz, but the structure was large and very complex. The polarization conversion metasurface (PCM) is a kind of artificial surface that can effectively convert a linearly polarized wave into the cross-polarized one [13]- [18]. In recent decades, various antennas based on PCM have been widely researched.…”

Section: Introductionmentioning

confidence: 99%

Multi-State Circularly Polarized Antenna Based on the Polarization Conversion Metasurface With Gain Enhancement

Chen

Wang

2020

IEEE Access

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In this paper, a multi-state circularly polarized antenna with gain enhancement is proposed based on the polarization conversion metasurface(PCM). The antenna is composed of a simple monopole antenna and a modified PCM coating which is made up of a series of arrow-shaped elements distributed partly on the back of the substrate. The dimension of the antenna is 42 × 43mm. And Genetic Algorithm (GA) is adopted to obtain the best performance of the PCM. The coating is used as a reflector, compared with the radiating wave, the amplitude of the reflected wave is equal and the phase is 90 • difference. Therefore, circularly polarized antenna is obtained with a low profile. By rotating the orientation of the element, the antenna changes from LHCP to RHCP which means the antenna can work in multi-state. In addition, the gain of the antenna is improved. Both of the simulated and measured results have verified the design. The simulated and measured results show that the operating band of the proposed CP radiation is 10.2 to 10.9 GHz. And the gain is improved for 1 dB in average with the peak being 2 dB at 10.9 GHz.

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“…However, this kind of chessboard metasurfaces (CMs) suffers from the narrow band. The chessboard polarization conversion metasurfaces (PCMs) are used to expand the bandwidth of RCS reduction, in 9 – 11 . Aside from the CMs, phase gradient metasurfaces (PGMs) are also utilized to reduce the RCS of antennas 12 , 13 , based on the generalized Snell-Descartes’s law 14 .…”

Section: Introductionmentioning

confidence: 99%

A metasurface composed of 3-bit coding linear polarization conversion elements and its application to RCS reduction of patch antenna

Kong

Wang

Jiang

et al. 2020

Sci Rep

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In this paper, a metasurface composed of 3-bit coding linear polarization conversion elements and its application to RCS reduction of the patch antenna is intensively studied. At first, 3-bit coding metasurface are constructed by a sequence of eight coded unit cells, which have a similar cross-polarized reflected amplitude response and gradient reflected phase responses covering 0–2π, respectively. Equivalent circuit models of these unit cells are created to describe their electrical behavior for the two linear incident polarizations at the same time. Then, a patch antenna is integrated on the 3-bit metasurface, of which the elements are placed with a 2-dimensional linear coding sequence. The metal square ring is set around the patch antenna to protect it from the disturbance of metasurface. Both the simulation and experiment results demonstrate that the designed metasurface can primarily reduce the antenna RCS at a broadband, while the antenna performances are not degraded significantly.

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RCS Reduction and Gain Enhancement for the Circularly Polarized Array by Polarization Conversion Metasurface Coating

Cited by 69 publications

References 13 publications

Wideband Circularly Polarized Magneto-Electric Dipole $1\times2$ Antenna Array for Millimeter-Wave Applications

Wideband Circularly Polarized Magneto-Electric Dipole $1\times2$ Antenna Array for Millimeter-Wave Applications

Multi-State Circularly Polarized Antenna Based on the Polarization Conversion Metasurface With Gain Enhancement

A metasurface composed of 3-bit coding linear polarization conversion elements and its application to RCS reduction of patch antenna

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