Method and apparatus for stabilizing pulsed microwave amplifiers

Patent · Tue Jan 26 00:00:00 EST 1993

OSTI ID:6229647

Hopkins, D B

Phase and amplitude variations at the output of a high power pulsed microwave amplifier arising from instabilities of the driving electron beam are suppressed with a feed-forward system that can stabilize pulses which are too brief for regulation by conventional feedback techniques. Such variations tend to be similar during successive pulses. The variations are detected during each pulse by comparing the amplifier output with the low power input signal to obtain phase and amplitude error signals. This enables storage of phase and amplitude correction signals which are used to make compensating changes in the low power input signal during the following amplifier output pulse which suppress the variations. In the preferred form of the invention, successive increments of the correction signals for each pulse are stored in separate channels of a multi-channel storage. Sequential readout of the increments during the next pulse provides variable control voltages to a voltage controlled phase shifter and voltage controlled amplitude modulator in the amplifier input signal path.

• DOE Contract Number: AC03-76SF00098
• Assignee: Univ. of Calif., Oakland, CA (United States)
• Patent Number(s): US 5182524; A
• Application Number: PPN: US 7-850456
• OSTI ID: 6229647
• Resource Relation: Patent File Date: 10 Mar 1992
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
MICROWAVE AMPLIFIERS
STABILIZATION
AMPLITUDES
CONTROL
ELECTRON BEAMS
FEEDBACK
MODULATION
PHASE SHIFT
PULSES
VARIATIONS
AMPLIFIERS
BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
LEPTON BEAMS
MICROWAVE EQUIPMENT
PARTICLE BEAMS
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)