A multi-mode resonator-based UWB bandpass filter with wide stopband
Published online by Cambridge University Press: 01 June 2015
Abstract
In this paper, a novel multi-mode resonator is presented, which is formed by cascading several open-circuited transmission line sections with a coupled-line section. Owing to its symmetry, even- and odd-mode analysis methods are applied to analyze its resonance characteristic. Based on this resonator, a microstrip ultra-wide bandwidth (UWB) bandpass filter is designed, fabricated, and measured. The simulated and measured results show that its bandwidth can cover the desired UWB. Return loss in passband is better than −14 dB. This filter is featured by good selectivity and wide stopband. Stopband suppression as low as −40 dB can be achieved within frequency range from 12 to 16 GHz.
- Type
- Research Papers
- Information
- International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 7 , November 2016 , pp. 1031 - 1035
- Copyright
- Copyright © Cambridge University Press and the European Microwave Association 2015
References
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