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Journal Article A Narrow Bandwidth Microstrip Band-Pass Filter with Symmetrical Frequency Characteristics
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Authors
Dong Suk Jun, Hong Yeol Lee, Dong Young Kim, Sang Seok Lee, Eun Soo Nam
Issue Date
2005-10
Citation
ETRI Journal, v.27, no.5, pp.643-646
ISSN
1225-6463
Publisher
한국전자통신연구원 (ETRI)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.4218/etrij.05.0204.0069
Project Code
04MB1200, SoP(System on Package) for 60 GHz Pico cell Communication, Cho Kyoung Ik
Abstract
This letter proposes a band-pass filter (BPF) with two transmission zeros based on a combination of parallel coupling and end coupling of half-wave transmission lines. The fabricated BPF exhibited a narrow bandwidth and two transmission zeros near the pass-band due to the end-coupled and shielding waveguide. At the center operation frequency of 60 GHz, the 20 dB bandwidth of the BPF is 1.0 GHz, which is almost 2% of the center operation frequency, and the insertion loss is 3.12 dB. Two transmission zeros reach approximately 40 dB at 58.5 and 62.5 GHz. The simulation results almost agree with the measured results.
KSP Keywords
5 GHz, 60 GHz, Band pass Filter(BPF), Frequency characteristics, Half-wave, Narrow bandwidth, Pass-band, Transmission line, Wave transmission, insertion loss, parallel coupling