Electronic arrangement for generating an amplitude and...

Details Electronic arrangement for generating an amplitude and... Electronic arrangement for generating an amplitude and...

H - Electricity

03

C

332/39

H03C 5/00 (2006.01) H04B 1/68 (2006.01) H04L 27/36 (2006.01)

Patent

CA 1188758

32 ABSTRACT: When an amplitude and phase-modulated carrier signal is generated by an electronic arrangement, two phase-modulated auxiliary signals are first generated from two modulation signals with substantially the same amplitude in order to avoid non-linear distortion. There- after the amplitude and phase-modulated carrier signal is generated by summing the phase-modulated signals by addi- tion or subtraction. The phase of the auxiliary signals are chosen so that the amplitude modulation of the ampli- tude and phase-modulated signal depends on the difference between these phases and depends on the modules of the modulation signals represented in a system of polar co- ordinates, the phase modulation of the amplitude and phase- modulated signal depending on the sum of the phases and on that argument of the phase-modulated signals represented in the system of polar coordinates.

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