Control voltage generator in a transmitter arrangement for digit

Details Control voltage generator in a transmitter arrangement for digit Control voltage generator in a transmitter arrangement for digit

1989-02-08

1992-06-16

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

332160, 330149, H04L 2549

Patent

active

051230313

ABSTRACT:
A control voltage generator in a transmitter arrangement for, e.g., QAM signals comprising a class C output amplifier (AMP). The control voltage generator (CVG) comprises a memory with a look up table (ROM), whereby the I,Q-signals (I,Q) of the modulating signal (DM) address a cell in the look-up table (ROM), the information of which is used as a control signal (CS) to control the amplifier output level (RF). The information is modified to compensate for temperature variations and other non-linearities.

REFERENCES:
patent: 2705775 (1955-04-01), Crosby
patent: 3900823 (1975-08-01), Sokal et al.
patent: 4291277 (1981-09-01), Davis et al.
patent: 4462001 (1984-07-01), Girard
patent: 4700151 (1987-10-01), Nagata

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