Programmable Controls to Scattering Properties of a Radiation Array

Li, Si Jia; Li, Yun Bo; Zhang, Lei; Luo, Zhangjie; Han, Bo Wen; Li, Rui Qi; Cao, Xiangyu; Cheng, Qiang; Cui, Tie Jun

doi:10.1002/lpor.202000449

Cited by 114 publications

(57 citation statements)

References 58 publications

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“…Polarization is a significant concept in electromagnetic (EM) field which is represented the characteristic of directional change of EM vector in space. [1][2][3][4][5] It can be divided into the following types including linear polarization (LP), circular polarization (CP) and elliptical polarization. [6][7][8] Owing to the advantage of low susceptibility to the rain echo and atmospheric effects, circular polarization wave has been extensively used in satellite communication systems, navigation systems and radar tracking systems.…”

Section: Introductionmentioning

confidence: 99%

Quad‐Band Transmissive Metasurface with Linear to Dual‐Circular Polarization Conversion Simultaneously

Han

et al. 2021

Advcd Theory and Sims

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Metasurface is a momentous periodic or aperiodic microstructure which has capabilities in controlling polarization of electromagnetic waves. To realize polarization controlling, many microstructures have been designed to achieve the function. However, multi-band linear to dual-circular polarization converter is rarely proposed and designed in the last few years. Here, a quad-band dual-circular transmissive metasurface (QCT-MS) is proposed to manipulate polarization of transmissive wave. QCT-MS is designed as a three-layer microstructure, with substrate in the middle and two metal patches in the shape of bi-symmetrical arrow on both sides. The proposed microstructure manipulates linear polarization waves to dual-circular polarization waves in different frequency bands with x-polarized or y-polarized incident waves. The experimental and simulated results reveal that left-hand circularly polarized waves can be realized in 3.14-3.32, 4.41-4.46, and 14.82-16.05 GHz while the right-hand circularly polarized waves can be achieved from 9.45 to 10.12 GHz for QCT-MS with x-polarized incidences. Moreover, the simulated results also demonstrate its characteristics of wide-angle transmission and periodic changes. The proposed transmissive metasurface can be utilized in multiband communication and multifunctional dual-circularly polarized antenna systems.

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Section: Introductionmentioning

confidence: 99%

Quad‐Band Transmissive Metasurface with Linear to Dual‐Circular Polarization Conversion Simultaneously

Han

et al. 2021

Advcd Theory and Sims

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“…A chiral metasurface (CMS) consisting of three layers of dielectric substrate and four layers of metal patches 25 exhibits asymmetric transmission of double circularly and linearly polarized waves at the same frequency. A field‐programmable gate array 26 has been introduced to extend, realize, and verify the multiple functions of the meta‐microstructure (MMS) including polarization conversion, scattering beam manipulation, diffusion scattering, radar cross‐section reduction and EM waves radiation. A dual‐band dual‐circular transmissive metasurface (DCT‐MS) 27 is realized with a unit cell comprising a thin substrate and two metal patches in the shape of symmetrical arrows above and below the substrate for simultaneous conversion of LP EM waves into LHCP waves in a lower band and RHCP waves in a higher band.…”

Section: Introductionmentioning

confidence: 99%

Passive FSS based polarization converter integrated microstrip antenna

Das

Mandal

2021

Int J RF Mic Comp-Aid Eng

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A reflection mode linear to circular polarization converter (PC) with high angular stability up to 60° is proposed in which no metallic backing is required, like the conventional PCs. Two distinct frequency selective surfaces (FSS1 and FSS2) are designed to block TE and TM waves, respectively, across the same frequency band (6.8–13.6 GHz). While the top layer (FSS1) and bottom layer (FSS2) are kept at an air gap of λ/8 between them, a phase quadrature in orthogonal components of the reflected wave is realized. An axial ratio ≤ 3 dB is obtained by designing the FSS layers such that the magnitude of reflection coefficient (S11) under TM polarization for FSS2 is equal to that of FSS1 under TE polarization. As a proof of concept, this PC is integrated with a linearly polarized (LP) microstrip antenna (MSA) and tested. It converts the LP waves into circularly polarized (CP) waves at three different frequency bands and also enhances antenna gain by 4.5 dB. Further, by varying only the altitudinal position of the top FSS layer manually, reconfigurability in CP bands can be accomplished without using any active elements and electronic tuning systems. A prototype is fabricated and validated by proper measurements.

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“…Based on their structural forms, mobile communication antennas can be divided into reflector antennas [11,12], lens antennas [13][14][15], and array antennas [16][17][18]. Reflector antennas have the best performance.…”

Section: Introductionmentioning

confidence: 99%

A Low-Sidelobe-Level Variable Inclination Continuous Transverse Stub Antenna with a Nonlinear Slow-Wave Structure

Wang

Lei

Gao

et al. 2021

International Journal of Antennas and Propagation

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The sidelobe level (SLL) is an essential performance factor for satellite communication antennas. A low-SLL design can effectively suppress adjacent satellite interference. A low-SLL design method for a variable inclination continuous transverse stub (VICTS) antenna is proposed in this paper. The VICTS antenna is composed of three rotatable parts: a feeding plate, a radiation plate, and a polarization plate. The radiation plate comprises two groups of stubs with different radiation ratios. Combined with the nonlinear slow-wave structure attached to the feeding plate, the radiation ratio of the unit can be adjusted. The aperture field of the VICTS antenna using this method can be tapered in order to suppress the SLL. To verify the effectiveness of this method, the antenna prototype is fabricated and measured in a microwave anechoic chamber. The simulation and the measurement are in good agreement. The reflection coefficient of the antenna is kept below −15 dB and between 13.75 GHz and 14.5 GHz. When the radiation plate and the feeding plate rotate relative to each other, the pattern beam can be scanned from 5° to 70 ° . In the scanning range, the typical SLL can reach −18 dB.

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Programmable Controls to Scattering Properties of a Radiation Array

Cited by 114 publications

References 58 publications

Quad‐Band Transmissive Metasurface with Linear to Dual‐Circular Polarization Conversion Simultaneously

Quad‐Band Transmissive Metasurface with Linear to Dual‐Circular Polarization Conversion Simultaneously

Passive FSS based polarization converter integrated microstrip antenna

A Low-Sidelobe-Level Variable Inclination Continuous Transverse Stub Antenna with a Nonlinear Slow-Wave Structure

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