Polar loop transmitter

Details Polar loop transmitter Polar loop transmitter

H - Electricity

04

B

325/67

H04B 1/04 (2006.01) H03C 1/06 (2006.01)

Patent

CA 1194131

16 ABSTRACT: A polar loop transmitter in which a negative feedback bias adjusting system is provided to control the bias voltage applied to a differential amplifier which supplies the input envelope information to an amplitude modulator, so that the R.T. modulate output goes to zero for a zero in the input envelope information. The negative feedback bias adjusting system modifies a predetermined bias voltage supplied by a potentiometer by sampling the holding the peak value of negative spikes occurring in the output of the differential amplifier and using the held value as a negative feedback voltage to the differential amplifier.

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