Phase and amplitude stabilization of short-pulsed, high-power microwave amplifiers

Hopkins, D.B.; Yu, Dingling; Orzechowski, T. J.; Westenskow, G.A.; Yu, S.P.

doi:10.1109/pac.1991.164625

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…This real time correction is achieved by measuring system variations due to the actual signal instead of system variations due to a reference signal. It can be defined as a periodical feedback correction system since the actual frequency is not high enough to require the use of a feed-forward correction system [2,3].…”

Section: Introductionmentioning

confidence: 99%

High-Accuracy Gain and Phase Regulation System for Real Time Compensation

Lagutère

Tahmi

Russat

2006

2006 IEEE International Symposium on Industrial Electronics

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This paper describes a circuit designed to automatically adjust the gain and the phase of a signal processing system. This circuit uses the AD8302 component from Analog Devices for phase and gain measurement. Additional circuits are included to improve its overall stability (temperature and input power level). As a first step, the compensation system "learns" its actual gain and phase performances. Then, it drives a phase shifter and a VGA (Variable Gain Amplifier) to cancel the measured deviation between the reference and the corresponding actual value. The measurement accuracy of our compensation system for a standard commercial temperature range (0°C to +85°C) is +0.28 dB for gain and +1.150 for phase when signal frequency is 900 MHz.

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Section: Introductionmentioning

confidence: 99%

High-Accuracy Gain and Phase Regulation System for Real Time Compensation

Lagutère

Tahmi

Russat

2006

2006 IEEE International Symposium on Industrial Electronics

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W-band free electron lasers for high gradient structure research

Lidia

Whittum²,

Donohue³

Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)

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We analyze two designs for W-Band free electron lasers for application as laboratory instruments in the study of millimeter wave accelerators at high gradient. The first design is based on the linear induction accelerator LELIA (CEA/CESTA, France), employs a 1-kA, 80-ns electron pulse, and corresponds to a helical TE 11 200MW W-Band amplifier design. We analyze also a W-Band planar ubitron design making use of a SLACmodulator, operating with a 480 kV, 300 A, sheet beam gun and producing a 5 MW, 1µs pulse.

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Phase and amplitude stabilization of short-pulsed, high-power microwave amplifiers

Cited by 2 publications

References 4 publications

High-Accuracy Gain and Phase Regulation System for Real Time Compensation

High-Accuracy Gain and Phase Regulation System for Real Time Compensation

W-band free electron lasers for high gradient structure research

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