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High-selectivity microstrip bandpass filter using triple-mode resonators
Author(s): Yuanzhe Qiao; Shoutao Fan; Qi Zhong
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Paper Abstract

In this paper, a miniaturized highly-selective six-pole filter with wide stopband is reported. For this purpose, a triple-mode resonator loaded with stub and patch is proposed, which is characterized both by theoretical analysis and full-wave simulation. The designed six-pole filter is composed of two identical triple-mode resonators. The two resonators are coupled to each other to increase the selectivity. There are two transmission zeros at each side of the passband, which increase the stopband attenuation. The other two transmission zeros suppress the harmonic frequencies, which extend the 20dB stopband rejection levels up to 6GHz. The center frequency of the filter is 2.2GHz, the fractional passband is 13%, and the 30dB regular coefficient is better than 0.6.

Paper Details

Date Published: 18 December 2019
PDF: 6 pages
Proc. SPIE 11340, AOPC 2019: Optical Fiber Sensors and Communication, 113400R (18 December 2019); doi: 10.1117/12.2543577
Show Author Affiliations
Yuanzhe Qiao, Beijing Institute of Remote Sensing Equipment (China)
Shoutao Fan, Beijing Institute of Remote Sensing Equipment (China)
Qi Zhong, Beijing Institute of Remote Sensing Equipment (China)


Published in SPIE Proceedings Vol. 11340:
AOPC 2019: Optical Fiber Sensors and Communication
Jie Zhang; Songnian Fu; Jun Yang, Editor(s)

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