Feed-forward digital phase and amplitude correction system

Details Feed-forward digital phase and amplitude correction system Feed-forward digital phase and amplitude correction system

1993-05-03

1994-11-15

Sikes, William L.

Amplifiers

Hum or noise or distortion bucking introduced into signal...

330207P, 330298, 330145, 330129, H03L 700

Patent

active

053651901

ABSTRACT:
Phase and amplitude modifications in repeatable RF pulses at the output of a high power pulsed microwave amplifier are made utilizing a digital feed-forward correction system. A controlled amount of the output power is coupled to a correction system for processing of phase and amplitude information. The correction system comprises circuitry to compare the detected phase and amplitude with the desired phase and amplitude, respectively, and a digitally programmable phase shifter and attenuator and digital logic circuitry to control the phase shifter and attenuator. The Phase and amplitude of subsequent are modified by output signals from the correction system.

REFERENCES:
patent: 4600892 (1986-07-01), Wagner et al.
patent: 4803440 (1989-02-01), Hotta et al.
patent: 5182524 (1993-01-01), Hopkins
Adaptive Feed Forward in the Lanl RF Control System, C. D. Ziomek, 1992 Linear Accelerator Proceedings, Aug. 24-28, 1992, pp. 683-685.
Feed Forward RF Control System of the Accelerator Test Facility, I. Ben-Zui, et al., IEEE Particle Accelerator Conference, May 6-9, 1991, San Francisco, Calif., pp. 1323-1325.
Phase and Amplitude Stabilization of Short-Pulsed, High Power Microwave Amplifiers, D. Hopkins et al., IEEE Particle Accelerator Conference, May 6-9, 1991, San Francisco, Calif., pp. 1335-1337.

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