FREQUENCY CONVERTING CIRCUIT ARRANGEMENT AND MOBILE RADIO SET COMPRISING SAID CIRCUIT ARRANGEMENT

摘要

Disclosed is a frequency converting circuit arrangement (14) supplying a complex-valued output signal at the output (2) thereof. Said circuit comprises two frequency mixers (3, 4) which are respectively triggered by an input signal and a feedback signal which represents the frequency-divided output signal and is divided into an in-phase component and a quadrature component. The inventive frequency converting circuit (14) makes it possible to supply in a frequency-precise manner that is independent of production tolerance a signal with one output frequency, said signal being supplied as an IQ signal and being decoupled frequency-wise from the input signal, wherefore said frequency converting circuit (14) is particularly suitable for mobile radio transceivers.