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- Title
A W -Band Chebyshev Waveguide Bandpass Filter with Wide Stopband Performance.
- Authors
Zhu, Zhongbo; Hu, Weidong; Xu, Kaida; Bai, Yuming; Li, Sheng
- Abstract
In this paper, a W-band waveguide bandpass filter with a standard fourth-order Chebyshev response is proposed based on the computer numerical control (CNC)-milling technology. The harmonics-staggered technique and orthogonal coupling method are incorporated into this waveguide filter design without increasing the complexity of the filter structure in order to suppress the intrinsic spurious responses near the passband. Furthermore, the proposed filter design maintains a simple construction, which can be conveniently fabricated using CNC milling. The fabricated waveguide filter exhibits an average insertion loss of 0.9 dB and a return loss of above 20 dB in a 3 dB fractional bandwidth (FBW) of 5.5% centered at 85 GHz. The excellent spurious suppression property can reach better than −25 dB up to 165 GHz. The wide stopband performance of the proposed W-band filter is very competitive compared with the reported waveguide filters.
- Subjects
WAVEGUIDE filters; BANDPASS filters; SUBSTRATE integrated waveguides; INSERTION loss (Telecommunication); AUTOMATION; WAVEGUIDES
- Publication
Electronics (2079-9292), 2024, Vol 13, Issue 9, p1793
- ISSN
2079-9292
- Publication type
Article
- DOI
10.3390/electronics13091793