RECEIVER ARCHITECTURE FOR RECEIVING ANGLE-MODULATED/SCANNED CARRIER SIGNALS OF DIFFERENT FREQUENCY

摘要

In order to combine the advantage of high integratability in the case of a homodyne receiver with the advantages of a heterodyne receiver in receiver architecture for receiving angle-modulated/scanned carrier signals of different frequency, the receiver architecture has a two-stage synthesizer (SYN) with a first local oscillator (LO1) of fixed frequency in a first synthesizer stage (SYNS1) and a second local oscillator (LO2) of adjustable frequency in a second synthesizer stage (SYNS2). The mixers in the second synthesizer stage (SYNS2) are designed so as to form a mixer arrangement (MA) for rejecting image frequencies formed in the first synthesizer stage (SYNS1).