Telecommunications – Transmitter – With feedback of modulated output signal
Patent
1990-01-02
1991-12-03
Kuntz, Curtis
Telecommunications
Transmitter
With feedback of modulated output signal
323265, 323270, 330297, H04B 104, G05F 140, H03F 304
Patent
active
050705385
ABSTRACT:
The high voltage regulator employs a field effect transistor (FET) amplifier and a wide band frequency compensated RC voltage divider. The device comprises a FET amplifier used as a current source in a 20 KV power supply. The negative output of the supply is sensed by a voltage divider consisting of two resistors in parallel with two capacitors. The voltage divider output is applied to the non-inverting input of an operational amplifier whose reference is set to affect the linear operation of an inverting operational amplifier. A no load to full load and line regulation of 0.1% is provided to a microwave tube. For a 16-KV regulated output the inverting amplifier must have a dc operation point of 4 KV to accommodate a 20% storage capacitor voltage droop and a .+-.5% line change. At this level the inverting amplifier provides a swing of .+-.4 KV. This range allows for a large line voltage variation and storage capacitor voltage droop. The dynamic range and bandwidth of the regulator not only provides regulation for long term line voltage regulation but also negates the effects of line voltage transitions over a wide frequency and amplitude range.
REFERENCES:
patent: 3289057 (1966-11-01), Melanson
patent: 3361945 (1968-01-01), Mittler et al.
patent: 3500172 (1970-03-01), Eckstein, Jr.
patent: 3551788 (1970-12-01), Summer
patent: 4400660 (1983-08-01), Schaefer
patent: 4667144 (1987-05-01), Jones et al.
patent: 4757251 (1988-07-01), Fuchs
patent: 4893070 (1990-01-01), Milberger et al.
patent: 4897617 (1990-01-01), Milberger et al.
Jones Franklin B.
Kerfoot Charles S.
Milberger Walter E.
Faile Andrew
Franz Bernard E.
Kuntz Curtis
Singer Donald J.
The United States of America as represented by the Secretary of
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