Transmitter arrangement for digitally modulated signals

Details Transmitter arrangement for digitally modulated signals Transmitter arrangement for digitally modulated signals

1989-02-08

1992-02-25

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

455126, 330149, 332160, H04L 2503

Patent

active

050919199

ABSTRACT:
A radio transmitter arrangement for e.g. QAM signals comprising a class C output transistor amplifier (AMP). The control voltage generator (CVG) comprises a memory, whereby the I,Q-signals (I,Q) of the modulating signal (DM) address the control voltage generator (GEN), the information of which is used as a control signal (CS) acting as the collector voltage to control the amplifier output level (RF). The information can be modified to compensate for temperature variations and other non-linearities.

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patent: 4710815 (1987-12-01), Douglas et al.
patent: 4819268 (1989-04-01), Kahn

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