A Novel Current Mode Channel Select Filter for Multi Standard Wireless Receiver
Sajal K. Paul and Neeta Pandey
This paper describes a channel select filter that can operate on different available wireless service standards. The filter is based on current controlled conveyor (CCCII) and realized as second order low pass filter. The cut off frequency tuning is achieved via bias current of CCCII. The filter has several advantageous features: uses minimum number of plus type CCCIIs and grounded capacitors, enjoys low active and passive sensitivities, filter parameters are electronically tunable with bias currents of CCCIIs and low output impedance.
Keywords: channel select filter, current controlled conveyor, tunable filter.