volume | PIER Journals

2012-10-16

Compact Realization of Combline Bandpass Filter Integrated with Defected Microstrip Structure Bandstop Filter

Mohammad Almalkawi,

Dr. Mohammad Almalkawi

Electrical Engineering and Computer Science (EECS) Department

The University of Toledo

USA

Homepage

Vijay K. Devabhaktuni

Dr. Vijay K. Devabhaktuni

Electrical Engineering and Computer Science (EECS) Department

The University of Toledo

USA

Homepage

Progress In Electromagnetics Research Letters, Vol. 35, 99-105, 2012

doi:10.2528/PIERL12091810

Abstract

In this paper, a microstrip combline bandpass filter (BPF) with a broad upper stopband performance is presented. The proposed filter is based on the design of a bandpass filter cascaded with a defected microstrip structure (DMS) bandstop filter. The bandstop characteristic is realized using T-shaped DMS at the external input and output coupling transformers. The measured and simulated electrical performances are in good agreement and demonstrate broad upper stopband bandwidth. The proposed filter is also compared with the characteristic of a conventionally designed filter to highlight the advantages of the proposed approach.

Citation

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Mohammad Almalkawi, and Vijay K. Devabhaktuni, "Compact Realization of Combline Bandpass Filter Integrated with Defected Microstrip Structure Bandstop Filter," Progress In Electromagnetics Research Letters, Vol. 35, 99-105, 2012.
doi:10.2528/PIERL12091810

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