Premium
A single‐aperture duplex antenna with dual circular polarizations
Author(s) -
Lu YunLong,
Wang Yi,
Gao Steven,
Hua Changzhou,
Liu Taijun
Publication year - 2017
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.30873
Subject(s) - telecommunications link , bandwidth (computing) , physics , duplex (building) , resonator , electronic engineering , optics , engineering , electrical engineering , telecommunications , dna , genetics , biology
This article proposes a novel design of a compact single‐aperture dual circular polarization (CP) antenna with integrated duplexing functions using a phase controllable coupled resonator structure. To the best of the authors’ knowledge, this is the first report of a multifunctional CP antenna with integrated duplexing performance and dual polarizations. The two orthogonal CPs are realized for the two respective filtering channels. Each channel contains a phased filtering power divider forming the dual‐feed to a patch to achieve right‐hand or left‐hand CP (RHCP or LHCP). The required output phases of the dividers are realized by varied configurations of the coupled λ/2‐resonator pairs. A duplex‐CP‐antenna with RHCP/LHCP at the downlink/uplink (2.45/2.7 GHz) is designed, fabricated, and measured. It achieved a 3‐dB AR bandwidth of 3.2/7.7% at the downlink/uplink and an isolation better than 20 dB. Meanwhile, the antenna showed expected second‐order filtering characteristics at both channels.