IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control · 1988 · 24 citations · 9 references
EngineeringElectrical EngineeringPhysicsAnalog ElectronicsDigital CommunicationMicrowave EngineeringAnalog FiltersDigital Signal ProcessingMicrowave FiltersMillimeter-wave CommunicationsModulationSpectrum ManagementAcoustic Wave FiltersFilter DesignFiltersSecond-order DistortionSecond-order EffectsSpectral ShapingSurface Acoustic Wave Filters
The structure of a QAM radio system is explained. Some novel designs that demonstrate the current status of spectral shaping SAW (surface acoustic wave) filters are presented. Compensation of second-order effects is discussed. Experimental results for a filter for a 140-Mb/s 16 QAM cochannel system with a roll-off factor of 0.19 are shown. Two other examples of filters for a 140-Mb/s, 64 QAM system with a 35% relative bandwidth are also presented.
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R.H. Tancrell, M. G. Holland · Proceedings of the IEEE · 1971 · 330 citations
Optimum Design of SAW-Filters by Linear Programming
C.C.W. Ruppel, E. Ehrmann-Falkenau, Hartmut Stöcker et al. · 1983 · 29 citations
Engineering, Electrical Engineering, Design Optimization +16