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1 results

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

  • Photos Vryonides, Symeon Nikolaou, Sangkil Kim, Manos M. Tentzeris
  • Journal:
    International Journal of Microwave and Wireless Technologies / Volume 7 / Issue 6 / December 2015
    Published online by Cambridge University Press:
    17 July 2014, pp. 655-660
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  • 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.