A novel channel select filter for multi standard wireless receiver

This paper describes a novel channel select filter that can operate on different available wireless service standards. The filter is based on current conveyor (CCH) and realized as second order low pass filter. The cut off frequency tuning is achieved via capacitor array. The filter has several advantageous features: no external resistor usage, minimum number of plus type CCHs and grounded capacitors, enjoys low active and passive sensitivities, filter parameters are electronically tunable and low output impedance.