AM SUPPRESSION FOR CONSTANT ENVELOPE TRANSMITTERS
Original Publication Date: 1996-May-01
Included in the Prior Art Database: 2002-Apr-11
Transmitters of phase and frequency modulation type are designed to generate a constant amplitude RF output. Only the phase of the RF signal carries information. Unfortunately, mobile radios face fast variations of the DC supply voltage, in form of rip- ple, caused by the alternator charge current.