Patent ID: 7826542

Claim:
A channelization filter communication system comprising: an amplifier configured to amplify a communication channel signal; a communication channel frequency converter coupled to the amplifier, the communication channel frequency converter including: a first input configured to receive a first communication channel signal; a second input configured to receive a reference signal; and an output configured to provide a second communication channel signal, the second communication channel signal comprising a frequency-translated version of the first communication channel signal; a channelization filtering system coupled to the communication channel frequency converter, the channelization filtering system including: a selector input configured to receive a communication channel filter selector signal; and selectable communication channel filter elements, one or more of the selectable communication channel filter elements configured to be selected based on the communication channel filter selector signal to provide a target cutoff frequency, the selectable communication channel filter elements including: one or more first circuits formed of a first process type; and a calibration unit including: a calibration signal generator configured to provide a calibration signal, the calibration signal generator including: one or more second circuits formed of the same first process type; and a calibration parameter evaluation unit coupled to the calibration signal generator, the calibration parameter evaluation unit including: a first input configured to receive the calibration signal; and an output configured to provide information representing a parameter for characterizing the calibration signal.