Ka-Band Linear to Circular Polarization Converter Based on Multilayer Slab With Broadband Performance

Akbari, Mohammad; Farahani, Mohammad Reza; Sebak, Abdel-Razik; Denidni, Tayeb A.

doi:10.1109/access.2017.2746800

Cited by 67 publications

(30 citation statements)

References 25 publications

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“…The basic principle for polarization conversion performance is decomposing incident wave into two components, orthogonal to each other but having the same magnitudes and phase difference as ±90˚. This concept has been used in different types of LP-to-CP converters which have been reported using non-resonant [12][13][14] and resonant periodic structures [15][16][17][18][19][20][21]. For example, Euler et al reported frequency selective surface based polarization converter using a single layer of the substrate [15].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Thin Metasheet for Dual-Wide-Band Linear to Circular Polarization Conversion With Wide-Angle Performance

et al. 2020

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Satellite communication systems require dual-band circularly polarized (CP) waves to integrate receiving and transmit antennas into one dual-band terminal. Polarization converters play an important role in such a scenario to convert the incoming linearly polarized (LP) signal into the transmitted CP signal. Wide-band and wide-angle performance for the transmission based dual-band polarization converters has been a challenge. In this paper, a transmission-based linear polarization to circular polarization (LP-to-CP) converter is presented using a very simple and thin metasurface based structure. The proposed metasheet is uni-layered, patterned with a circular diagonal split ring enclosed in the square ring. The idea for dual-band polarization conversion is verified with an example in which x(y) polarization is converted into LHCP(RHCP) in Ku-band (15.25~18.9 GHz), and RHCP(LHCP) in Ka-band (29.7~36.7GHz). The converter performs polarization conversion for both bands over 21% of bandwidth which is very wide. Moreover, it maintains performance over wide-angled oblique incidences. Dual-band performance is analyzed theoretically, numerically, and experimentally. The equivalent circuit model is also presented for the unit cell. This metasheet has simple and low-cost design, wide polarization conversion bandwidths, polarization diversity, and wide-angle performance which are very promising for future communication systems.

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Section: Introductionmentioning

confidence: 99%

Ultra-Thin Metasheet for Dual-Wide-Band Linear to Circular Polarization Conversion With Wide-Angle Performance

et al. 2020

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“…This property is used to convert LP to CP waves and it holds true for FSS as well. However, FSS-based polarisers [10][11][12][13][14][15] are bulky because they are either multi-layered or require height optimisation when installed along with an antenna [16]. On the contrary, HIS-based reflectors exhibit zero reflection phase at the operating frequency and therefore they are an attractive solution to realise low-profile compact antennas on LP to CP polarisers using anisotropic patches [17,18].…”

Section: Introductionmentioning

confidence: 99%

Quad‐band linear to circular reflective polarisation transformer and its application in dual‐sense circularly polarised antenna design

Karthikeyan

2019

IET Microwaves, Antennas & Propagation

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This study presents the design and application of a novel quad‐band reflective polarisation transformer (RPT) with linear to dual‐sense circular polarisation (LP to DS‐CP) conversion. The proposed reflector is a highly miniaturised (0.1λ0×0.025λ0) two‐layered structure built on a thin dielectric substrate (0.005λ0, where λ0 is the free‐space wavelength of the lowest frequency with zero reflection phase) and backed by a ground plane. The design consists of anisotropic capacitive patches due to which the reflection phase of the orthogonal components of the LP wave differs by +90° (yielding right‐hand circularly polarised (LHCP)) at 2 GHz and by −90° (yielding right‐hand circularly polarised (RHCP)) at 2.4, 3.5 and 5.8 GHz. Further, it is proposed that the CP sense can be controlled by introducing narrow rectangular slots on both sides of the two‐layered RPT. These perturbations delay (or advance) the reflections by 180°, thereby converting RHCP component to LHCP (or vice‐versa). This diversity principle is verified using full‐wave and circuit simulations. A prototype of the RPT is fabricated and measured to validate these results. For practical verification, the RPT is placed behind a quad‐band LP antenna operating exactly at the ±90° reflection phase frequencies. The polariser converts LP to RHCP at 2.4–2.55/3.38–3.6 GHz and LP to LHCP at 2, 5.8–5.92 GHz.

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“…MLPs usually employ a multilayer structure, and spacers with low permittivity are necessary to maintain the desired distances between layers. In recent years, various kinds of wideband transmissive multilayer [11][12][13][14][15][16][17] and 3D [18,19] LP-CP converters based on split-ring resonators [11,13], frequency selective surfaces (FSSs) [12,15,16], and metamaterials [14,17,18] have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Design of Wideband Planar Linear-Circular Polarization Converter With Centrosymmetric Dual-Loop Elements

Peng¹,

Hu²,

Guo³

et al. 2018

PIER M

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A wideband planar linear-circular polarization converter comprising periodic centrosymmetric dual-loop unit cells with wideband property is presented in this paper. Full-wave simulation and a parameter study are conducted to demonstrate the basic working principle of the converter. The performance of the device under oblique and deflected incidence situations is considered and discussed, and a prototype is manufactured and tested. Measured results show that the working band of the device covers 19.3 GHz to 31.8 GHz with less than 3 dB axial ratio, which agrees well with the simulated ones and thus validates the design concept.

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Ka-Band Linear to Circular Polarization Converter Based on Multilayer Slab With Broadband Performance

Cited by 67 publications

References 25 publications

Ultra-Thin Metasheet for Dual-Wide-Band Linear to Circular Polarization Conversion With Wide-Angle Performance

Ultra-Thin Metasheet for Dual-Wide-Band Linear to Circular Polarization Conversion With Wide-Angle Performance

Quad‐band linear to circular reflective polarisation transformer and its application in dual‐sense circularly polarised antenna design

Design of Wideband Planar Linear-Circular Polarization Converter With Centrosymmetric Dual-Loop Elements

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