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Reconfigurable dual-mode band-pass filter with switchable bandwidth using PIN diodes

Published online by Cambridge University Press:  17 July 2014

Photos Vryonides ,
Symeon Nikolaou ,
Sangkil Kim  and
Manos M. Tentzeris
Photos Vryonides*
Affiliation:
Frederick University, 7 Y. Frederickou St., Nicosia 1036, Cyprus
Symeon Nikolaou
Affiliation:
Frederick University, 7 Y. Frederickou St., Nicosia 1036, Cyprus
Sangkil Kim
Affiliation:
School of ECE, Georgia Institute of Technology, Atlanta, GA 30309, USA
Manos M. Tentzeris
Affiliation:
School of ECE, Georgia Institute of Technology, Atlanta, GA 30309, USA
*
Corresponding author: P. Vryonides Email: Eng.vp@fit.ac.cy
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Abstract

A reconfigurable band-pass filter with switchable bandwidth, for wireless applications is demonstrated using a dual-mode microstrip square-loop resonator. The proposed filter has been designed on Rogers RO4003C and achieves switchable bandwidth by changing the length of two tuning stubs with the implementation of two strategically placed p-i-n diodes as switching elements. The filter was designed with a center frequency of 2.4 GHz and the two distinct operation states have bandwidths, 113 MHz (4.8%) with an insertion loss of 1.2 dB and 35 MHz (1.5%) with an insertion loss of 1.5 dB. The physical size of the fabricated reconfigurable filter including the implementation of the DC bias lines is comparable to the size of a conventional filter.

Keywords

Switchable bandwidthDual-mode filterDual-mode resonator
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 7 , Issue 6 , December 2015 , pp. 655 - 660
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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References

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