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Four‐port balanced antenna feeding network for switchable polarizations and stable Tx/Rx isolation characteristics
Author(s) -
Lee HanLim,
Park DongHoon,
Tae HyunSung,
Lee MoonQue,
Yu JongWon
Publication year - 2014
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.27991
Subject(s) - power dividers and directional couplers , polarization (electrochemistry) , microwave , circular polarization , port (circuit theory) , physics , electrical engineering , optics , engineering , antenna (radio) , electrical impedance , optoelectronics , telecommunications , microstrip , chemistry
ABSTRACT A new four‐port balanced antenna feeding network for switchable polarizations and high transmit/receive (Tx/Rx) isolation characteristics is presented. The proposed structure is configured by two switching mode hybrid matrices which consist of two 3‐dB couplers and two SP4T switches, two directional couplers, and Wilkinson dividers. By controlling impedances of the switching mode hybrid matrices, different types of polarizations such as right‐handed circular polarization, left‐handed circular polarization, vertical polarization, and horizontal polarization can be generated with stable Tx/Rx isolation characteristics regardless of antenna impedance variations. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:17–23, 2014