Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Patent
1984-06-01
1985-12-31
Mullins, James B.
Amplifiers
With control of power supply or bias voltage
With control of input electrode or gain control electrode bias
330135, 330297, H03G 320
Patent
active
045624070
ABSTRACT:
The present invention relates to a method for automatically regulating the HF output power of a high frequency amplifier wherein a regulating voltage is utilized to produce a control voltage or a control current for controlling the gain of the amplifier, a first voltage which depends on the HF output power is derived from the supply voltage and/or from the supply current of the current supply device providing the power required to generate the HF power; the regulating voltage is formed of two components, with the first component being generated from the first voltage and a first reference voltage, and with the second component being generated from a second voltage which depends on the control voltage or on the control current generated by the control voltage and from a second reference voltage; and that for high HF power essentially only the first regulating component is active and for low and medium power, whose range approximately covers the linear operating range of the amplifier, essentially only the second regulating component is active.
REFERENCES:
patent: 2689887 (1954-09-01), Doehler
patent: 2752430 (1956-06-01), Watkins
patent: 4066965 (1978-01-01), Schultz et al.
patent: 4112384 (1978-09-01), Buchberger
J. F. Heney et al., "High Efficiency, KA-Band, Traveling Wave Tube Amplifiers for Intersatellite Links", International Conference on Communications, Conf. Record No. 4, Session 70, Jun. 1981.
V. J. Thottuvelil et al., "Analysis and Design of a Push-Pull Current-Fed Converter", Power Electronics Specialist Conference Record 1981 (IEEE), (1981) pp. 192-203.
R. Redl et al., "Push-Pull Current-Fed Multiple-Output . . . Operation at Duty Ratio Below 50%", Power Electronics Specialist Conference Record 1981 (IEEE), (1981) pp. 204-212.
P. Sopper, "A High Voltage, High Power Pulsed TWT Power Supply for Space Application", Power Electronics Specialist Conference Record 1981 (IEEE), (1981) pp. 302-311.
Liebisch Wolfgang
Wassermann Manfred
ANT Nachrichtentechnik GmbH
Mullins James B.
Wan G.
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