Open AccessRF MEMS BASED HALF MODE BOWTIE SHAPED SUBSTRATE INTEGRATED WAVEGUIDE TUNABLE BANDPASS FILTER
Author(s) -
Muhammad Zaka Ur Rehman,
Zuhairi Baharudin,
M. A. Zakariya,
Mohd Haris Md Khir,
Muhammad Taha Jilani,
Muhammed Talha Khan
Publication year - 2015
Publication title -
progress in electromagnetics research c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 34
ISSN - 1937-8718
DOI - 10.2528/pierc15091407
Subject(s) - band pass filter , resonator , materials science , miniaturization , rectangle , bandwidth (computing) , optoelectronics , planar , microelectromechanical systems , filter (signal processing) , center frequency , waveguide , waveguide filter , electronic engineering , optics , prototype filter , electrical engineering , physics , low pass filter , engineering , telecommunications , computer science , nanotechnology , geometry , mathematics , computer graphics (images)
A tunable planar bandpass filter based on a technique that utilizes a half mode substrate integrated waveguide (HMSIW) and novel inter-resonator coupling is presented. The tunable HMSIW based bandpass filter is implemented using two half triangle shaped cavities coupled together through inter-resonator coupling forming half mode bowtie shaped structure. The bowtie-shaped filter exhibits similar performance as found in rectangle- and circle-shaped SIW based bandpass filters. This concept reduces the circuit foot print, and miniaturization high quality factor is maintained by the structure. The tunable filter utilizes packaged RF MEMS switches; switching between different configurations of switches achieves four distinctive frequency states between 4.8-5.3 GHz. The filter maintains a constant absolute 1 dB bandwidth of 100 ± 10 MHz for all frequency states.
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