H - Electricity – 03 – C
Patent
H - Electricity
03
C
332/64
H03C 1/00 (2006.01) H03C 1/54 (2006.01)
Patent
CA 2040354
ABSTRACT Modulator circuit (MOD) with a modulator proper and a correction signal generator. The modulator proper comprises the cascade connection of an amplifier (T11, T21, CS11, T12, T22, CS12) and a first switching circuit (R11, T31, T51, R12, T32. T52). whilst the generator comprises the cascade connection of the same amplifier and a second switching circuit (R21, T61. T42, R22, T62. T41) having a correction output (P11, P12) coupled to a feedback input (P21, P22) of the amplifier via a feedback circuit (T71. R31, CS21, T72. R32. CS22). The amplifier and the switching circuits are controlled by a modulating signal and a carrier signal respectively and the first and second switching circuits provide a modulated output signal and a correction signal substantially equal to the envelope of the modulated output signal and used to decrease the modulator distortion.
Sevenhans Joannes Mathilda Josephus
Vanden Abeele Erik Maurice Rene
Alcatel N.v.
Smart & Biggar
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