Open AccessDesign of balanced dual‐band bandpass filter based on substrate integrated waveguide
Author(s) -
Xu Xin,
Wang Jianpeng,
Zhang Gang,
Chen Jianxin
Publication year - 2013
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.2013.2371
Subject(s) - band pass filter , substrate (aquarium) , waveguide , dual (grammatical number) , multi band device , electronic engineering , materials science , waveguide filter , filter (signal processing) , optoelectronics , computer science , prototype filter , engineering , electrical engineering , telecommunications , filter design , oceanography , antenna (radio) , geology , art , literature
For the first time, a balanced dual‐band bandpass filter using a substrate integrated waveguide structure is reported. The co‐shared TE 102 ‐mode cavities arranged on the symmetrical plane can greatly reduce the common‐mode signal while selectively transmitting the differential‐mode (DM) signal. In addition, the desired DM response can be easily analysed and obtained by the equivalent 2‐port circuit model. To validate the design concept, one X‐band prototype has been fabricated and tested. The measured results match well with the theoretical counterparts.