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A highly selective UWB bandpass filter using stepped impedance stubs

Published online by Cambridge University Press:  03 April 2018

Minjae Jung  and
Byung-Wook Min
Minjae Jung
Affiliation:
Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
Byung-Wook Min*
Affiliation:
Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
*
Author for correspondence: Byung-Wook Min, E-mail: bmin@yonsei.ac.kr
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Abstract

We present a new ultra-wideband (UWB) band-pass filter (BPF) configuration with a stepped impedance short-circuited stub (SISS)-loaded triple-mode resonator (TMR) and stepped impedance radial stub (SIRS). The novel SISS-loaded TMR and SIRS improve the roll-off ratio at both ends. Even though this UWB BPF is based on a single resonator, the measured results show excellent in-band performance with a small insertion loss less than 0.6 dB and return loss greater than −16 dB. The proposed UWB BPF has sharp roll-off ratio of 96 and 43 dB/GHz, respectively, at the lower and upper edges of the pass-band, and a wide stop-band from 10.8 to 15.6 GHz with the rejection greater than 20 dB.

Keywords

Filterspassive components and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 3 , April 2018 , pp. 301 - 307
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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