DUAL-BAND BANDSTOP FILTER (DBBSF) USING SPURLINE & STEPPED-IMPEDANCE RESONATOR WITH TUNABLE DEVICES
Bandstop filters are very important components in RF microwave systems by virtue of their effective suppression of spurious signals. They are used widely as key components in transmitter and receiver systems. They can be used to block the interfering signals which might affect the transmitted signal. Recently, Dual-Band Bandstop filters (DBBSFs) have become an attractive research field because of their suitability for treating the undesirable double-sideband spectrum in high-power amplifiers and mixers. This feature can be achieved using only a single filter which can reduce both the circuit ...
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