Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Patent
1985-03-04
1987-07-21
Scott, Samuel
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
363 46, 315105, H04B 104
Patent
active
046823697
ABSTRACT:
A radar transmitter includes a ripple and droop reduction circuit to reduce the ripple and droop of the beam (power) supply. A beam supply filter capacitor is connected to the source of power and an operational amplifier has its balanced input ac connected across the beam supply capacitor. A transistorized amplifier stage inverts the signal from the operational amplifier and amplifies its absolute value up to the same level appearing across the beam supply filter capacitor. A transistorized follower stage is connected to the transistorized amplifier stage for receiving the inverted signal and producing a low impedance output for insertion in series with the beam supply filter capacitor for ripple and droop cancellation. A traveling-wave-tube is connected to the supply power capacitor which receives the ripple and droop free capacitor output and produces substantially consistent pulses for transmission.
REFERENCES:
patent: 3283252 (1966-11-01), Mead, Jr. et al.
patent: 3550030 (1970-12-01), Blanyer
patent: 3551780 (1970-12-01), Gautherin
patent: 3796965 (1974-03-01), Quesinberry et al.
patent: 4000471 (1976-12-01), Pankow
patent: 4323853 (1982-04-01), Kurokawa
"Circuit Ideas: Reducing Power Supply Ripple", by A. Bartram, from Wireless World (May 1981).
Comfort James T.
Flanigan Allen J.
Robinson Richard K.
Scott Samuel
Sharp Melvin
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