Infineon Technologies Ag

Hans-Eberhard Kroebel

Martin Simon

The invention specifies a transmission arrangement, particularly for mobile radio, which has a homodyne design and in which a feedback path is routed from the input or from the output of the vector modulator () via a switch () and an A/D converter () back to the digital signal processing () in baseband (). As a result, it is a particularly simple matter to detect offsets and amplitude mismatches and to correct them without difficulty in a digital signal processor (). This allows both significantly improved carrier frequency suppression and significantly improved sideband suppression to be achieved with little complexity. The mobile radio transmitter described is particularly suitable for use in modern mobile radio systems such as GSM EDGE and UMTS.

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Munich, Germany

Hans-Eberhard Kroebel