Open AccessAll‐resonator‐based waveguide diplexer with cross‐couplings
Author(s) -
Xia Wenlin,
Shang Xiaobang,
Lancaster Michael J.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.3659
Subject(s) - diplexer , resonator , topology (electrical circuits) , network topology , electronic engineering , waveguide , computer science , physics , engineering , optoelectronics , electrical engineering , computer network
An investigation into new diplexer topologies, based on all‐resonator structures with cross‐couplings between common resonators (shared by both channels) and branch resonators is reported. This all‐resonator structure eliminates the need for separate frequency distribution networks and uses resonators to achieve this functionality. For diplexers based on such all‐resonator structures, cross‐couplings can be added between the common resonators and branch resonators to achieve some desired specification (e.g. improved isolation). Two diplexer topologies with such cross‐couplings are presented. The first topology is implemented at the X‐band using waveguide technology. Excellent measurement results verified the proposed topology as well as the design procedure.