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Design of differential-mode bandpass filter with common-mode suppression using ring dielectric resonator

Published online by Cambridge University Press:  29 November 2016

Jugul Kishor ,
Binod K. Kanaujia ,
Santanu Dwari  and
Ashwani Kumar
Jugul Kishor
Affiliation:
Department of Electronics and Communication Engineering, I. T. S Engineering College, Greater Noida, UP, India
Binod K. Kanaujia*
Affiliation:
Department of ECE, Ambedkar Institute of Advanced Communication Technologies and Research, Geeta Colony, New Delhi-110031, India School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi-110067, India
Santanu Dwari
Affiliation:
Department of Electronics Engineering, Indian School of Mines, Dhanbad, Jharkhand, India
Ashwani Kumar
Affiliation:
Department of Electronics, Sri Aurobindo College, University of Delhi, Malviya Nagar, New Delhi-110017, India
*
Corresponding author: B.K. Kanaujia Email: bkkanaujia@ieee.org
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Abstract

Synthesis of differential-mode bandpass filter (BPF) with good common-mode suppression has been described and demonstrated on the basis of ring dielectric resonator (RDR) for high-performance communication system. A RDR with two pairs of feeding lines has been used to excite TE01δ-mode. This unique combination of feeding lines and the ring resonator creates a differential passband. Meanwhile, TM01δ-mode of the DR can also be excited to achieve common-mode rejection in the stopband. Transmission zeros are created in the lower and upper stopband to further improve the selectivity of the proposed BPF. A second-order differential BPF is designed, fabricated and its performance is measured to validate the concept. There is good agreement between simulated and measured results.

Keywords

Balanced modeBandpass filter (BPF)Common modeDifferential modeMicrostrip and ring dielectric resonator (RDR)
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 5 , June 2017 , pp. 1029 - 1035
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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