Title :
K-band RF-MEMS uniplanar reconfigurable-bandwidth bandpass filter using multimodal immittance inverters
Author :
Contreras, Adrian ; RiboÌ, M. ; Pradell, Lluis ; Casals-TerreÌ, J. ; Giacomozzi, Flavio ; Iannacci, J.
Author_Institution :
Tech. Univ. of Catalonia (UPC), Barcelona, Spain
Abstract :
A K-band RF-MEMS uniplanar second-order bandpass filter with reconfigurable bandwidth is presented. The filter is based on inductively-coupled half-wavelength slotline resonators and CPW-slotline multimodal immittance inverters (MIIs). The coupling inductance and the MII length are reconfigured using RF-MEMS ohmic-contact switches. Experimental results show a 3 dB relative-bandwidth change from 4.5 to 8.5% (maintaining a Butterworth response), and insertion losses of 5.2 and 3.7 dB for either state.
Keywords :
Butterworth filters; band-pass filters; inductance; invertors; micromechanical resonators; microswitches; microwave filters; ohmic contacts; slot lines; Butterworth response; CPW-slotline multimodal immittance inverters; K-band RF-MEMS uniplanar reconfigurable-bandwidth bandpass filter; K-band RF-MEMS uniplanar second-order bandpass filter; MII length; RF-MEMS ohmic-contact switches; coupling inductance; inductively-coupled half-wavelength slotline resonators; insertion losses; reconfigurable bandwidth; relative-bandwidth change;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.0681
