Polarization conversion of metasurface for the application of wide band low-profile circular polarization slot antenna

Huang, Yongjun; Yang, Li; Li, Jian; Wang, Yao; Wen, Guangjun

doi:10.1063/1.4960198

Cited by 118 publications

(55 citation statements)

References 20 publications

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“…In general, the operation principle of most loop‐like CP antennas is to simultaneously excite the 2 orthogonal linearly polarized (LP) modes with equal amplitude and in quadrature‐phase with by various perturbations. When such antennas are cavity‐backed and designed as uni‐directional antennas, it is found that the front‐to‐back ratio is <20 dB . Meanwhile, most of these antennas still exhibit relatively complicated structures with many design parameters .…”

Section: Introductionmentioning

confidence: 99%

“…When such antennas are cavity-backed and designed as uni-directional antennas, it is found that the front-to-back ratio is <20 dB. 22,[30][31][32][33] Meanwhile, most of these antennas still exhibit relatively complicated structures with many design parameters. [30][31][32]34 Therefore, it is a challenging task to design a loop-like CP antenna with a high front-to-back ratio while maintaining a relatively simple loop-like structure.…”

Section: Introductionmentioning

confidence: 99%

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Balanced circularly polarized square loop antenna under even-mode resonance

Yuan

Gao

et al. 2018

Int J RF Microw Comput Aided Eng

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Design approach to a novel balanced, circularly polarized (CP) square loop antenna under even‐mode resonance is proposed in this paper. The loop antenna is diagonally fed by a fork‐like dipole launcher. By matching the respective natural boundary condition of the loop radiator and the dipole launcher, the resonant even‐mode with inherent CP radiation characteristic can be sufficiently excited. Both the bi‐ and uni‐directional cases are designed and investigated. A bi‐directional CP loop antenna with a 3‐dB ratio axial ratio (AR) bandwidth of 6.6% is designed at first. A uni‐directional antenna having a planar metallic reflector is further designed. The uni‐directional loop antenna exhibits excellent uni‐directional CP performance with a high front‐to‐back ratio of 40dB and a 3‐dB AR bandwidth of 7.6% in both theory and experiment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Balanced circularly polarized square loop antenna under even-mode resonance

Yuan

Gao

et al. 2018

Int J RF Microw Comput Aided Eng

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“…Recently, polarization conversion characteristic of MS has been employed to design CP antenna with linearly polarised (LP) source . For instance, a Fabry‐Perot resonant cavity using PRS based on polarization conversion MS with LP patch antenna for CP radiation and high gain is introduced in, but the distance requirement between PRS and source increases overall volume of antenna.…”

Section: Introductionmentioning

confidence: 99%

Wideband and low RCS planar circularly polarized array based on polarization conversion of metasurface

Zheng

Guo

Ding

2018

Micro & Optical Tech Letters

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In this article, a planar wideband circularly polarized (CP) slot antenna array based on metasurface (MS) with low radar cross section (RCS) is proposed. The array is comprised of 2×2CP MS‐based antennas fed with a sequentially rotated feeding network. For each CP antenna, the CP radiation is achieved due to polarization conversion of the MS. Simultaneously, the total MS patches of the array can be viewed as checkerboard composed of MS array and mirror array. A 180° phase difference between the MS units and the mirror units ensures RCS reduction. Simulated results demonstrate that about 34.6% operating bandwidth in the frequency of 4.3–6.1 GHz (both S11 ≤–10 dB and AR < 3 dB). In addition, over 5 dB RCS reduction is obtained in the entire operation band under normal incidence with respect to the array without MS for both x‐ and y‐polarizations. The simulated monostatic RCS less than −30.9 dBsm is observed at 5.0 GHz. A prototype of the array is fabricated and measured, which are in good agreement with simulated results.

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“…The electrically thick substrates in the THz frequency cause serious problems, such as substrate reso-nance, which can be eliminated by decreasing the substrate thickness up to λ o /20, where λ o is a free space wavelength [11]. In recent years, researchers have demonstrated many extraordinary properties of metasurface antennas [12][13][14][15][16][17] because of their potential to provide the novel characteristics of an ultra-low profile and enhanced performance in gain, radiation pattern, and bandwidth [18]. Metasurface antennas have their own intrinsic advantages of easy fabrication, low cost, light weight, and extreme flatness.…”

Section: Introductionmentioning

confidence: 99%

Performance of a Planar Leaky-Wave Slit Antenna for Different Values of Substrate Thickness

Hussain

Kedze

2017

J Electromagn Eng Sci

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This paper presents the performance of a planar, low-profile, and wide-gain-bandwidth leaky-wave slit antenna in different thickness values of high-permittivity gallium arsenide substrates at terahertz frequencies. The proposed antenna designs consisted of a periodic array of 5 × 5 metallic square patches and a planar feeding structure. The patch array was printed on the top side of the substrate, and the feeding structure, which is an open-ended leaky-wave slot line, was etched on the bottom side of the substrate. The antenna performed as a Fabry-Perot cavity antenna at high thickness levels (H = 160 μm and H = 80 μm), thus exhibiting high gain but a narrow gain bandwidth. At low thickness levels (H = 40 μm and H = 20 μm), it performed as a metasurface antenna and showed wide-gain-bandwidth characteristics with a low gain value. Aside from the advantage of achieving useful characteristics for different antennas by just changing the substrate thickness, the proposed antenna design exhibited a low profile, easy integration into circuit boards, and excellent low-cost mass production suitability. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ⓒ

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Polarization conversion of metasurface for the application of wide band low-profile circular polarization slot antenna

Cited by 118 publications

References 20 publications

Balanced circularly polarized square loop antenna under even-mode resonance

Balanced circularly polarized square loop antenna under even-mode resonance

Wideband and low RCS planar circularly polarized array based on polarization conversion of metasurface

Performance of a Planar Leaky-Wave Slit Antenna for Different Values of Substrate Thickness

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