Broadband Linear-Cross Reflective type Polarization Converter for X and Ku-band Applications

Shukoor, Mohammad Abdul; Dey, Sukomal

doi:10.1109/apsym50265.2020.9350677

Cited by 17 publications

(6 citation statements)

References 14 publications

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“…Due to its essential role in various polarization sensitive implementations such as wireless communications, liquid crystal display, and antennas, a critical emphasis has long been placed on developing methodologies for supervising and managing the polarization of EM waves [3][4][5][6][7]. Polarization converters have the ability to change the EM wave direction [8]. Conventional polarization converters using the Faraday effect and the optical activity within crystals may be utilized for polarization control, but these techniques are unsuitable for many practical real-world applications due to constraints such as bulky size, narrow bandwidth, and incidence angle dependence that overall prevent their integration into micro-optical systems [9,10].…”

Section: Introductionmentioning

confidence: 99%

Cheaper, Wide-Band, Ultra-Thin, and Multi-Purpose Single-Layer Metasurface Polarization Converter Design for C-, X-, and Ku-Band Applications

Kaya

2023

Symmetry

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This article presents the design of wide-band, ultra-thin, and multi-purpose polarization converter utilizing metasurface for C-, X-, and Ku-band applications. Having a topology on a FR-4 substrate with metasurface metallic patterns on the front and an all-metallic surface finish on the back, the unit cell of converter design has symmetry in the x−y plane with unique features of having both linear polarization (LP) and circular polarization (CP) property. While the polarization conversion ratio (PCR) of converter in normal incidence case is more than 90% in three different frequency bands of 6.46–6.78 GHz, 10.52–11.85 GHz, and 16.49–17.37 GHz, it shows linear-to-linear polarization feature and a linear-to-circular polarization feature with left-handed circular polarization (LHCP) for the frequency range between 7.28 and 9.40 GHz and right-handed circular polarization (RHCP) for the frequency range between 13.38 and 15.19 GHz. It is also seen that the converter has a PCR value of around 90% for oblique incidence case with incidence angles up to 45°. Extensive simulations have been conducted to prove the performance of suggested converter with the aid of a commercially-available simulation platform, called CST Microwave Studio. The advantages of suggested polarization converter are low-cost, wide-band, ultra-thin, and having both LP and CP conversion in C-, X-, and Ku-bands.

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Section: Introductionmentioning

confidence: 99%

Cheaper, Wide-Band, Ultra-Thin, and Multi-Purpose Single-Layer Metasurface Polarization Converter Design for C-, X-, and Ku-Band Applications

Kaya

2023

Symmetry

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“…In recent years, two-dimensional metamaterials, specifically metasurfaces, have emerged as promising solutions for manipulating electromagnetic waves [3][4][5][6]. Polarization conversion can be achieved through birefringence in naturally occurring crystals [7]. Furthermore, combining natural materials with the Faraday effect, chiral liquid crystals, helical secondary proteins, and chiral gases and solutions provides additional avenues for polarization control [8].…”

Section: Introductionmentioning

confidence: 99%

Wideband and wide-angle reflective metasurface for efficient linear and circular polarization conversion in X, Ku, and K bands

Ahmad,

Qureshi,

Liu

et al. 2024

Phys. Scr.

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A single-layer wideband and wide-angle reflective metasurface exhibiting linear to cross-polarization conversion (CPC) and linear-to-circular polarization (LP-to-CP) conversion in the X, Ku, and K bands is presented in this research. The devised metasurface serves as a multifunctional platform, achieving CPC over a substantial fractional bandwidth of 64.34% (9.75-19 GHz) with remarkable efficiency exceeding 90% within the 9.75-16 GHz range, reaching a remarkable 100% at resonant frequencies of 11 GHz and 14.6 GHz. Additionally, linear-to-circular polarization conversion is achieved over a significant bandwidth of 9.54 GHz. Notably, the carefully optimized unit cell structure ensures robust polarization transformation, maintaining stability against variations in the incidence angle of up to 45° for both transverse-electric (TE) and transverse-magnetic (TM) polarizations. The proposed metasurface, characterized by its simplicity, compactness, angular stability, and multifunctionality, demonstrates the considerable potential for various microwave communications, antenna design, radar invisibility, and remote sensing device applications.

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“…Frequency selective surfaces (FSSs) are twodimensional spatial filters that can modulate the EM wave properties like amplitude, phase, and polarization. 9 After the advent of FSS technology, metasurface-based polarization converters have drawn researchers' attention in controlling wave polarization due to their strong anisotropy, broader bandwidth (multiple plasmonic resonances), and low-profile planar structure from microwave 10 to THz regimes. 11 Li et al proposed a rectangular split ring-based, highly efficient reflective polarizer printed on a low-loss substrate with a minimum 90% Polarization Conversion Ratio (PCR) from 8.2 to 23 GHz.…”

Section: Introductionmentioning

confidence: 99%

Novel broadband angular stable linear‐circular and linear‐cross polarizer based on inductive grid loaded H‐dipole in both reflection and transmission modes

Shukoor

Dey

2022

Int J RF Mic Comp-Aid Eng

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A novel broadband linear‐circular and linear‐cross polarization converter for K to Ka‐band applications is demonstrated in this work. The proposed structure primarily consists of an inductive grid in orthogonal with an H‐shaped dipole as top Frequency Selective Surface (FSS) and a modified horizontal dipole as bottom FSS; a 1 mm thin FR‐4 substrate is separating both. During transmission, it can convert the linearly polarized EM wave to a circular one, with Axial Ratio (AR) ≤ 3 dB from 13.08 to 25.13 GHz with 63.07% Fractional Bandwidth (FBW). In addition, this polarizer can work in reflection mode also when the bottom FSS is replaced by a Perfect Electrical Conductor (PEC), demonstrating the linear‐circular polarization with AR (≤3 dB) from 16.94 to 18.64 GHz (RHCP/LHCP) and 24.5–40.32 GHz (LHCP/RHCP) with FBW 9.56% (Ku‐band), and 48.81% (K‐ and Ka‐band), respectively. Besides, linear‐circular conversion, it performs linear‐cross conversion in reflection mode with polarization conversion ratio (PCR) above 90% from 19.71–22.22 GHz, 43.57–48.81 GHz, 53.50–55.32 GHz with 13.89%, 11.34%, 3.32%, FBW, respectively. The equivalent circuit model of the proposed converter is extracted. Surface current distribution profiles at multiple plasmonic resonances are investigated to understand the reason behind the multi‐polarization conversion. The performance is angular stable up to 45° for both transverse electric (TE) and transverse magnetic (TM) incidences for reflection as well as transmission modes. The unitcell is compact with periodicity 0.114λL × 0.114λL and a thickness of 0.044λL, where λL is the free‐space wavelength of the lowest frequency. This design's novelty lies in dual‐mode stable angular performance in both reflection and transmission cases. Also, highly miniaturized architecture and circular rotation switching in the consecutive bands make this design suitable for real‐time scenarios.

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Broadband Linear-Cross Reflective type Polarization Converter for X and Ku-band Applications

Cited by 17 publications

References 14 publications

Cheaper, Wide-Band, Ultra-Thin, and Multi-Purpose Single-Layer Metasurface Polarization Converter Design for C-, X-, and Ku-Band Applications

Cheaper, Wide-Band, Ultra-Thin, and Multi-Purpose Single-Layer Metasurface Polarization Converter Design for C-, X-, and Ku-Band Applications

Wideband and wide-angle reflective metasurface for efficient linear and circular polarization conversion in X, Ku, and K bands

Novel broadband angular stable linear‐circular and linear‐cross polarizer based on inductive grid loaded H‐dipole in both reflection and transmission modes

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