2010 IEEE MTT-S International Microwave Symposium · 2010 · 14 citations · 12 references
EngineeringElectrical EngineeringMicroelectromechanical SystemsMicroelectronicsMicrowave EngineeringMems SwitchesMicrowave FiltersMicrowave Integrated CircuitsRadio-frequency Integrated CircuitsResonant CircuitsRf MemsBandstop FiltersCapacitive Mems SwitchesCapacitive Rf Mems SwitchesReconfigurable FiltersResonance FrequenciesRf Mems FiltersRf SwitchesSplit-ring Resonators
A reconfigurable four-pole bandstop filter based on the combination of the split ring resonators (SRRs) and RFMEMS switches, operative at the X frequency band, is presented for the first time. The fabricated device consists on a microstrip line loaded with four pairs of SRRs, exhibiting four different resonance frequencies, and two capacitive ON/OFF switches placed between the inner and outer rings of each SRR. Through their electrostatic actuation, the resonance frequency of each SRR can be shifted and as a result filter bandwidth can be digitally controlled, or even suppressed. Good agreement between theory and experiment is achieved.
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