H - Electricity – 03 – K
Patent
H - Electricity
03
K
332/32
H03K 7/00 (2006.01) H04L 27/20 (2006.01)
Patent
CA 1182875
ABSTRACT This invention is a digital phase modulator for microwave transmitter systems. A digital signal is bandwidth limited at baseband, then is shaped to compensate for the nonlinear reflection coefficient versus bias voltage characteristics in a phase modulator. The shaped signal is applied to the phase modulator to modulate a carrier. The carrier signal is derived from a high power amplifier operating at its maximum power handling capability. Linear multiplication is then obtained, and use of linear intermediate frequency stages, up-converters as well as operation of the high powered amplifier at less than maximum power to obtain linear operation is thus avoided.
404854
Cuhaci Misel M.
Hitchcock Normand S.
Lo Gerald J.p.
As Represented By The Ministe R. Of Communications Her Majesty The Queen In Right Of Canada
Shapiro Cohen
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