An adaptive broadband BiCMOS active spur canceler

Summary form only given, as follows. An active interference cancellation system is presented that is capable of eliminating undesired signals resulting from an on-chip clock whose fundamental (from 6 – 10 GHz) and/or harmonics (up to 30 GHz) couple into a receiver path. The system performance is independent of the aggressing clock rate and amplitude fluctuations. A series-to-parallel interface provides a healing aspect to the system. Over 25 dB of cancellation for an aggressing clock and its harmonics have been achieved.