The present invention concerns a radio circuit including a local oscillator, a first receive frequency converter, a frequency divider and a demodulator. A receive signal and an output of the local oscillator are input to the first receive frequency converter. The receive signal is converted into a first...http://www.google.de/patents/US6421530?utm_source=gb-gplus-sharePatent US6421530 - Radio circuit having a local oscillator frequency which differs from the transmit frequency or the receive frequency and mobile radio apparatus
