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A dual‐band linear‐to‐circular polarization converter with robustness under oblique incidences
Author(s) -
Zhao Jin,
Cheng YuJian,
Huang TieJun,
Liu PuKun
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.32598
Subject(s) - polarizer , circular polarization , robustness (evolution) , oblique case , polarization (electrochemistry) , linear polarization , optics , physics , materials science , microstrip , laser , biochemistry , chemistry , linguistics , birefringence , philosophy , gene
A dual‐band linear‐to‐circular polarization converter is proposed and experimentally demonstrated in this work. The structure consists of four identical meander‐line layers separated by air. The converter transforms y ‐polarized waves into left hand circular‐polarized waves in 19.7 to 20.2 GHz, and x ‐polarized waves into right hand circular‐polarized waves in 29.5 to 30 GHz, corresponding to the dual‐band characteristic. With the incident angle ranging from 0° to 30°, the conversion remains realizable in the two working bands, fully verifying the polarizer's robustness within 30° oblique incidence. Besides, the proposed structure is fabricated using a normal PCB process. The experimental results match well with the simulation ones, which demonstrates the feasibility of our scenario. This work is beneficial for satellite communication in the K/Ka bands.