Amplifiers – With traveling wave-type tube
Patent
1985-12-30
1987-11-24
Mullins, James B.
Amplifiers
With traveling wave-type tube
330 86, 330112, H03F 358
Patent
active
047092157
ABSTRACT:
A method and apparatus are disclosed for regulating the operation of a TWT. The TWT regulation is achieved by detecting the operating condition of the TWT, e.g., by measuring dynamic gain, and regulating feedback of the TWT output in response to the TWT operating condition. The invention is preferably implemented so as to augment the TWT input drive from an exciter source to induce the TWT to drive itself into saturation. The inventive technique comprises determining whether the TWT is operating in a desired operating condition, e.g., saturation, feeding back to the TWT input a portion of the TWT output power to the TWT input, and regulating the feedback signal to keep the TWT operating in the desired condition. Determination of whether the TWT is operating in a saturation condition may be affected through measurement of the TWT dynamic gain. The invention permits dynamic management of the feedback to accommodate variations in gain of the TWT, e.g., such as those during TWT input pulse rise and pulse fall times. The invention maintains the TWT in the desired condition despite changes in the condition of the TWT or in the signals applied to the TWT.
REFERENCES:
patent: 3173108 (1965-03-01), Kawahashi et al.
patent: 3668533 (1972-06-01), Fish
patent: 4066965 (1978-01-01), Schultz et al.
IRE Transactions on Communications Systems, vol. CS-10, No. 1, Mar. 1962 (Professional Group on Communications Systems, New York, USA), V. C. Chewey, "Beam-Controlled Linear Klystron Amplifiers for Improved SSB Efficiency", pp. 142-145, see FIGS. 1, 2; p. 143, 1 paragraph: Principles of Klystron Beam Control.
Patent Abstracts of Japan, vol. 2, No. 19, Feb. 8, 1978, p. 11115 E77 & JP, A, 52136546 (Nippon Denki K.K.) Nov. 15, 1977.
Hwang William
McClanahan Robert F.
Washburn Robert
Hughes Aircraft Company
Karambelas A. W.
Mullins James B.
Thompson Robert
LandOfFree
Traveling wave tube drive controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Traveling wave tube drive controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Traveling wave tube drive controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2424743