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A linear to circular polarization reconfigurable converter based on frequency selective surface
Author(s) -
Sofi Mohammad Ayoub,
Saurav Kushmanda,
Koul Shiban Kishen
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32779
Subject(s) - pin diode , circular polarization , optics , axial ratio , linear polarization , polarization (electrochemistry) , diode , turnstile antenna , cascade , reconfigurable antenna , physics , materials science , optoelectronics , antenna (radio) , radiation pattern , electrical engineering , engineering , coaxial antenna , chemistry , microstrip , laser , chemical engineering
In this article, a linear to circular polarization reconfigurable converter (PRC) working in transmission mode is proposed. The PRC's fundamental unit consists of a cascade of half‐hexagon structure and its mirror replica printed on both sides of a single layer substrate. A PIN diode inserted in the central arm of the unit cell controls the PRC's behavior to a ϕ = 45° linearly polarized (LP) incident wave, transmitting an LP and circularly polarized (CP) in the ON and OFF state of the diode respectively. The proposed PRC is compact with an overall size of 0.046λ 0 3 (λ 0 is calculated with respect to 15.15 GHz) and exhibits a polarization conversion ratio greater than 0.9 in the frequency band 14.0–16.0 GHz. Polarization reconfigurable behavior of the converter is verified by placing 45°clockwise rotated 6 × 6 array of the proposed PRC's unit cell on top of an LP patch antenna. The transmitted radiation from the antenna with the PRC in ON and OFF state of the PIN diode is LP and CP (left or right). A prototype of the antenna with PRC is fabricated, and the results obtained from measurements are in agreement with simulated ones.