2002 · 119 citations · 5 references
EngineeringElectrical EngineeringPhysicsAcousticsMicrowave EngineeringAcoustic Wave PropagationImpedance MatchingMicrowave FiltersMicrowave ResonatorsResonant CircuitsAcoustic FiltersAcoustic Impedance EngineeringAcoustic Wave FiltersCoupled-resonator FiltersCoupling CoefficientElectromechanical Coupling CoefficientFiltersResonator Coupling
Resonator coupling coefficient plays a key role in determining the bandwidth of acoustically or electrically coupled resonator filters. This paper presents a method using high mechanical impedance electrodes to increase the effective coupling coefficient for bulk acoustic wave (BAW) resonators in the solidly mounted resonator (SMR) or membrane (FBAR) configurations.
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HIGH Q MICROWAVE ACOUSTIC RESONATORS AND FILTERS
Elecirodes Piezoelectric · 1993 · 278 citations
PCS 1900 MHz duplexer using thin film bulk acousticresonators (FBARs)
R. Ruby, P. Bradley, John D. Larson et al. · Electronics Letters · 1999 · 196 citations