Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 31, Issue 12, Pages 1267-1270Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2021.3103638
Keywords
Bandpass filter (BPF); meander ring resonators (MRRs); waveguide filter; W-band
Categories
Funding
- JSPS Postdoctoral Fellowship for Research in Japan [FY2019]
- Natural Science Foundation of Shaanxi Province [P19350]
- Siyuan Scholar Fellowship of XJTU [2021JQ-060]
- Austrian Science Fund (FWF) [P19350] Funding Source: Austrian Science Fund (FWF)
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A W-band E-plane waveguide bandpass filter using an embedded substrate with metal strips and a meander ring resonator is proposed, allowing for easy adjustment of center frequency, bandwidth, and skirt selectivity. A simplified LC equivalent circuit is provided to understand the operational mechanism and investigate transmission zeros and poles. A prototype example was manufactured and measured to demonstrate a center frequency at 91.3 GHz, bandwidth from 88.9 to 93.7 GHz, and minimum insertion loss of 1.6 dB within the passband.
A W-band E-plane waveguide bandpass filter (BPF) is proposed using an embedded substrate with two metal strips and a meander ring resonator. The center frequency, bandwidth, and skirt selectivity of the proposed BPF can be easily adjusted. A simplified LC equivalent circuit is given to understand the operational mechanism of the BPF structure and investigate the distributions of the transmission zeros and poles. To validate the idea and show the performance of the designed W-band BPF, a prototype example is manufactured and measured. The measurement results show that the waveguide BPF has a center frequency at 91.3 GHz with a bandwidth from 88.9 to 93.7 GHz, and the minimum insertion loss within the passband is 1.6 dB.
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