A receiving and filtering circuit includes an antenna, a demodulator circuit coupled to the antenna, and a digital median filter that removes high frequency content of a demodulated digital information signal to produce a filtered digital information signal corresponding to an analog data signal transmitted...http://www.google.es/patents/US6223083?utm_source=gb-gplus-sharePatente US6223083 - Receiver employing digital filtering for use with an implantable medical device
Receiver employing digital filtering for use with an implantable medical device
