A cascaded coupled resonator decoupling network for mitigating interference between two radios in adjacent frequency bands
Publication in refereed journal

Times Cited
Altmetrics Information

Other information
AbstractA new microwave device called the cascaded type of coupled resonator decoupling network (C-CRDN) is proposed in this paper. The four-port device can be used to reduce the interference between two radio systems that work in adjacent or even contiguous frequency bands. A C-CRDN is cascaded between the two antennas to be decoupled and the I/O ports of their radio systems, respectively. The coupling matrix of a C-CRDN can be designed to meet the required isolation and return-loss specifications. To prove the concept, a fourth- and sixth-order C-CRDN using coaxial combline cavities are designed, fabricated, and measured according to the characteristics of a testing array that consists of two high-gain sleeve dipoles working in the adjacent time-division long-term evolution and wireless fidelity bands. The measured results have demonstrated that the proposed C-CRDN can effectively mitigate the coexistence interference between the two collocated systems by providing at least 20-dB isolation improvement and enhanced matching performance. The proposed technique is general and can find many applications in heterogeneous wireless systems.
All Author(s) ListZhao L., Qian K.-W., Wu K.-L.
Journal nameIEEE Transactions on Microwave Theory and Techniques
Volume Number62
Issue Number11
PublisherInstitute of Electrical and Electronics Engineers
Place of PublicationUnited States
Pages2680 - 2688
LanguagesEnglish-United Kingdom
KeywordsCo-located transceivers, in-device coexistence (IDC), interference suppression, long-term evolution (LTE), microwave passive network, mutual coupling, wireless fidelity (Wi-Fi)

Last updated on 2021-20-09 at 00:11