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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2026-03-18
Design and Experimental Validation of Linear to Circular Polarization Converter for Point to Point THz Communication
By
Murtaza Waheed,

    Mr. Murtaza Waheed

    Indian Institute of Technology Jammu

    India

    Homepage

Javid Ahmad Ganie,

    Dr. Javid Ahmad Ganie

    King Fahd University of Petroleum & Minerals

    Saudi Arabia

    Homepage

Mingyan Zhong,

    Dr. Mingyan Zhong

    School of Engineering

    University of Glasgow

    United Kingdom

    Homepage

Qusay Raghib Al-Taai,

    Dr. Qusay Raghib Al-Taai

    School of Engineering

    University of Glasgow

    United Kingdom

    Homepage

Kushmanda Saurav,

    Dr. Kushmanda Saurav

    Indian Institute of Technology Jammu

    India

    Homepage

Chong Li

    Mr. Chong Li

    School of Engineering

    University of Glasgow

    UK

    Homepage

Progress In Electromagnetics Research Letters, Vol. 130, 1-8, 2026
doi:10.2528/PIERL26010302 | Google Scholar

Abstract
This letter presents a compact, low profile singe substrate transmissive linear-to-circular polarization (LCP) converter designed and experimentally validated for point-to-point THz communication bands. The proposed LCP converter consists of an H-shaped gold metallic pattern deposited on both sides of a 100 μm-thick fused silica substrate. The LCP converter operates within the 0.225-0.307 THz frequency band, achieving a simulated 3-dB axial ratio bandwidth of 30.8% in simulation. Owing to its wide axial ratio bandwidth, the proposed design is a promising candidate for point-to-point THz communication applications. The performance of the proposed converter is verified through surface current distribution, which explains the occurrence of Huygens response and equivalent circuit model. The proposed converter exhibits a measured 3-dB axial-ratio bandwidth of 27.8% in the frequency band 0.229-0.303 THz. The simple geometry and single-substrate implementation, with a thin profile and wide 3-dB axial ratio bandwidth, make the proposed design suitable for practical deployment scenarios.
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Citation
Murtaza Waheed, Javid Ahmad Ganie, Mingyan Zhong, Qusay Raghib Al-Taai, Kushmanda Saurav, and Chong Li, "Design and Experimental Validation of Linear to Circular Polarization Converter for Point to Point THz Communication," Progress In Electromagnetics Research Letters, Vol. 130, 1-8, 2026.
doi:10.2528/PIERL26010302
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