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- Title
Millimetre-wave balanced SIW bandpass filter with high common-mode suppression.
- Authors
Guo, Zi-Jun; Hao, Zhang-Cheng; Wu, Yi-Wen
- Abstract
A balanced substrate-integrated waveguide (SIW) filter based on a virtual electric wall (VEW) is presented and studied in this Letter. By introducing VEW on the symmetry plane for replacing the metallic-via-array, conductor losses from metal sidewalls can be avoided. As proof-of-concept example, a six-pole balanced filter using asymmetric inductive windows is designed and fabricated with a measured centre frequency of 29.45 GHz, as well as fractional bandwidth of 7.2% to cover satellite ground terminal application. The measured response shows a good concordance with the simulated one, indicating that the proposed balanced filter has the advantages of high common-mode suppression and low insertion loss.
- Subjects
BANDPASS filters; INSERTION loss (Telecommunication); TRANSMISSION zeros; SUBSTRATE integrated waveguides; WAVEGUIDE filters; TELECOMMUNICATION satellites
- Publication
Electronics Letters (Wiley-Blackwell), 2020, Vol 56, Issue 22, p1189
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2020.1928