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Design and Optimization of New Compact Tunable 2.4‐GHz Band Pass Filter Using Coupled λ /2 Microstrip Open‐Loop Resonators and Mems‐Switch Technique
Author(s) -
Boutejdar Ahmed,
Omar Abbas,
Burte Edmund
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27843
Subject(s) - microstrip , resonator , microelectromechanical systems , microwave , filter (signal processing) , band pass filter , insertion loss , fabrication , electronic engineering , materials science , coupling (piping) , prototype filter , optoelectronics , low pass filter , engineering , electrical engineering , telecommunications , medicine , alternative medicine , pathology , metallurgy
A new compact WLAN‐band pass filters are proposed using a half wavelength microstrip open‐loop and λ/2 microstrip resonators based on direct‐cross coupling method and micro electronic mechanical system (MEMS) technology. The filter is not only compact in size due to the slow‐wave effect, but also has multitransmission zeros at both low and high rejection bands, as well as low insertion loss in the pass band. A demonstration filter has been designed and tested. Simulation results almost agree with the measured results. Some discrepancy between them can still be observed, which can be attributed to the unexpected tolerance of fabrication. Due to the simplicity of the design and its fabrication, it shows that this type of band pass filter has great potential for actual applications in communication and other systems. By applying the MEMS technology, a switchable band pass filter based on the quadruplet filter is able to be designed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2444–2450, 2013