[1] Chen Zhenhua, Xu Jinping,. W-band sharp-rejection bandpass filter with notch cavities [J]. Journal of Southeast University (English Edition), 2013, 29 (1): 11-15. [doi:10.3969/j.issn.1003-7985.2013.01.003]

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W-band sharp-rejection bandpass filter with notch cavities()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

29

Issue:

2013 1

Page:

11-15

Research Field:

Electronic Science and Engineering

Publishing date:

2013-03-20

Info

Title:

W-band sharp-rejection bandpass filter with notch cavities

Author(s):

Chen Zhenhua;  Xu Jinping

State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Keywords:

W-band;  E-plane filter;  sharp rejection;  notch filter

PACS:

TN713.5

DOI:

10.3969/j.issn.1003-7985.2013.01.003

Abstract:

High-Q notch cavities combined with a low-order E-plane fin-line filter are used for designing a sharp-rejection band-pass filter(BPF)at W-band. Based on the conventional E-plane fin-line structure, an E-plane extended cavity is implemented to enhance the suppression at unwanted frequency points near the passband. The passband performance is not disturbed and the whole structure remains simple to be assembled. To extend the suppression bandwidth, two separated notch cavities are designed and arranged at the input and output ends of the fin-line filter, respectively. A prototype BPF is fabricated and measured. Experimental results show that the minimum insertion loss is 2.7 dB over a passband of 1 GHz. The suppression is about 85 dB near 91.7 GHz, which is 2.2 GHz lower than the center frequency. Experimental results agree well with simulation.

References:

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[8] Konishi Y, Uenakada K. The design of a bandpass filter with inductive strip-planar circuit mounted in waveguide [J]. IEEE Transactions on Microwave Theory and Techniques, 1974, 22(10): 869-873.
[9] Denisov G G, Kuzikov S V, Lukovnikov D A. Simple millimeter wave notch filters based on rectangular waveguide extensions [J]. International Journal of Infrared and Millimeter Waves, 1995, 16(7): 1231-1238.
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Memo

Memo:

Biographies: Chen Zhenhua(1984—), male, graduate; Xu Jinping(corresponding author), male, doctor, professor, jpxu@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.60921063).
Citation: Chen Zhenhua, Xu Jinping. W-band sharp-rejection bandpass filter with notch cavities[J].Journal of Southeast University(English Edition), 2013, 29(1):11-15.[doi:10.3969/j.issn.1003-7985.2013.01.003]

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