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Wideband band-pass filters with spurious band suppression

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2 Author(s)
Lin-Chuan Tsai ; Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan ; Wen-Cheng Lai

In this paper, we investigate the cause of the second harmonic of the parasitic pass-band of coupled-serial-shunted lines band-pass filters. Filters are employed substrate suspension, wavy-edge coupling, ring resonators, and a combination of the wavy-edge coupling and ring resonators to suppress the harmonic pass-band. Using a continuous perturbation of the wavy-edge and ring resonators of the harmonic pass-band of the parallel-coupled line filter is rejected. A synthesizing method is presented to design Chebyshev type II band-pass filters in the microwave frequency range. Chebyshev type II band-pass filters are implemented to validate this method correct by measuring.

Published in:

Wireless Communications and Signal Processing (WCSP), 2010 International Conference on

Date of Conference:

21-23 Oct. 2010