Compact ultra-wideband planar filter with RF-MEMS-based tunable notched band
作者： Luca Pelliccia , Fabrizio Cacciamani , Fabrizio Gentili , Paola Farinelli , Roberto Sorrentino
DOI: 10.1109/APMC.2012.6421653
关键词: Waveguide filter 、 Stub (electronics) 、 Bandwidth (signal processing) 、 Band-pass filter 、 Microelectromechanical systems 、 Ohmic contact 、 Band-stop filter 、 Optoelectronics 、 Materials science 、 Ultra-wideband 、 Electrical engineering
摘要: This paper presents the design of a compact ultra-wideband (UWB) bandpass planar filter with tunable notched band within bandwidth. The can be used for wireless communications unlicensed UWB range (3.1–10.6 GHz). is based on external interdigitated quarter-wavelength microstrip resonators and central half-wave resonator embedding reconfigurable open-circuited stub. stub introduces narrow rejection inside frequency tuning obtained by sequentially activating three RF MEMS ohmic switches placed in series along embedded HFSS® simulations 5th order show very low return (>13dB) insertion losses (<0.3dB) all states good selectivity performance bands (up to −18dB rejection). device has been fabricating at FBK quartz substrate; experimental results will available soon.
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