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

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)655-660
Number of pages6
JournalInternational Journal of Microwave and Wireless Technologies
Issue number6
Publication statusPublished - 1 Dec 2015
Publication typeA1 Journal article-refereed


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.

ASJC Scopus subject areas


  • Dual-mode filter, Dual-mode resonator, Switchable bandwidth