Large programmable delay at high frequency through aliasing

A programmable alias delay device comprising:

• an input bandpass filter adapted to receive an input RF signal, the input bandpass filter adapted to filter the input RF signal, thereby generating an input band RF signal in a desired input frequency band;
• an input sampling stage adapted to receive an input sampling clock at a frequency FS and the input band RF signal, the input sampling stage including M sampling switched capacitor storage elements, the M sampling switched capacitor storage elements adapted to sequentially sample and hold a corresponding portion of the input band RF signal, the thus sampled and held portions of the input band RF signal being input sampled signals;
• a programmable delay stage including M programmable switched capacitor banks, each programmable switched capacitor bank including N delay switched capacitor storage elements, each delay switched capacitor storage element adapted to sample and hold a corresponding time interleaved portion of a corresponding input sampled signal, the thus sampled and held signals being delay sampled switched signals;
• an enable timing circuit adapted to receive a desired delay value, the enable timing circuit including a digital counter, the digital counter adapted to count to the desired delay value, upon reaching the desired delay value the enable timing circuit is adapted to output a corresponding output reconstruction clock, an incremental delay value corresponding to M/FS;
• an output reconstruction stage including M output reconstruction switches, each output reconstruction switch coupled to a corresponding delay output switch, each output reconstruction switch adapted to output a corresponding time interleaved delay sampled switched signal based upon the output reconstruction clock, the thus output time interleaved delay sampled switched signals being output reconstruction signals, the output reconstruction stage adapted to output the output reconstruction signals in a sequential manner thereby generating a reconstructed delayed output RF signal;
• and
• an output alias filter adapted to receive the reconstructed delayed output RF signal and to filter the reconstructed delayed output RF signal, thereby generating an alias band output RF signal in a desired output frequency band.