TY - GEN
T1 - Decoupling of a Tri-Band Shared-Aperture Patch Array Using an Unified Tri-Band Decoupling Network (UTDN)
AU - Wang, Xichen
AU - Ding, Can
AU - Li, Shiyong
AU - Zhao, Guoqiang
AU - Sun, Houjun
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - A unified tri-band decoupling network (UTDN) is developed to enable aperture sharing among three pairs of closely spaced, differentially fed patch antennas operating in distinct frequency bands: 25.5-28.94 GHz (12.5%) for the high band (HB), 18.07-19.2 GHz (6.1%) for the mid band (MB), and 9.83- 10.18 GHz (3.5%) for the low band (LB). The UTDN simultaneously mitigates all coupling effects, including in-band and cross-band couplings across the three bands. It achieves a maximum in-band isolation enhancement of 44 dB at HB and 20 dB at MB, while suppressing all cross-band couplings below -22 dB. Despite its exceptional decoupling performance, the UTDN remains highly compact and is implemented on the same layer as the patch antennas. This simplicity and effectiveness stem from a novel decoupling principle - the current cancellation strategy - which is specifically designed for and applicable only to differentially-fed antennas (DFAs).
AB - A unified tri-band decoupling network (UTDN) is developed to enable aperture sharing among three pairs of closely spaced, differentially fed patch antennas operating in distinct frequency bands: 25.5-28.94 GHz (12.5%) for the high band (HB), 18.07-19.2 GHz (6.1%) for the mid band (MB), and 9.83- 10.18 GHz (3.5%) for the low band (LB). The UTDN simultaneously mitigates all coupling effects, including in-band and cross-band couplings across the three bands. It achieves a maximum in-band isolation enhancement of 44 dB at HB and 20 dB at MB, while suppressing all cross-band couplings below -22 dB. Despite its exceptional decoupling performance, the UTDN remains highly compact and is implemented on the same layer as the patch antennas. This simplicity and effectiveness stem from a novel decoupling principle - the current cancellation strategy - which is specifically designed for and applicable only to differentially-fed antennas (DFAs).
KW - antenna decoupling
KW - differentially-fed antenna (DFA)
KW - multi-band decoupling network
KW - shared-aperture antenna
UR - https://www.scopus.com/pages/publications/105019503591
U2 - 10.1109/IWS65943.2025.11177991
DO - 10.1109/IWS65943.2025.11177991
M3 - Conference contribution
AN - SCOPUS:105019503591
T3 - 2025 IEEE MTT-S International Wireless Symposium, IWS 2025 - Proceedings
BT - 2025 IEEE MTT-S International Wireless Symposium, IWS 2025 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th IEEE MTT-S International Wireless Symposium, IWS 2025
Y2 - 19 May 2025 through 22 May 2025
ER -