Multifunction channelizer/DDC architecture for a digital receiver/exciter

A multi-mode dynamic channelizer included in a digital receiver, the multi-mode dynamic channelizer comprising:

• an adaptive filter configured to actively adjust a bandwidth of a respective complex RF channel to generate at least one filtered complex RF signal;
• at least one Fourier transfer module configured to generate a complex output signal at baseband based on the at least one filtered complex RF signal;
• and
• a mode selector module in signal communication with the adaptive filter, the mode selector module configured to command the adaptive filter to generate a plurality of individual channels in response to receiving a first mode select signal indicative of a first operating mode, and to command the adaptive filter to generate a parallelization of a selected channel in response to receiving a second mode select signal indicative of a second operating mode that is different from the first operating mode.

A method of processing an input signal received at a digital receiver, the method comprising:

• generating a local oscillating (LO) signal at a selected frequency;
• mixing the input signal with the LO signal to generate a mixed output signal having a phase that is shifted with respect to an input phase of the input signal;
• operating a multi-mode dynamic channelizer in a first mode that processes the mixed output signal to generate a plurality of individual channels having a channel size defined by a bandwidth and a gain;
• and
• operating the multi-mode dynamic channelizer in a second mode that processes the mixed output signal to generate a parallelization of a selected channel.