Pulsed depressed collector
Abstract
A high power RF device has an electron beam cavity, a modulator, and a circuit for feed-forward energy recovery from a multi-stage depressed collector to the modulator. The electron beam cavity include a cathode, an anode, and the multi-stage depressed collector, and the modulator is configured to provide pulses to the cathode. Voltages of the electrode stages of the multi-stage depressed collector are allowed to float as determined by fixed impedances seen by the electrode stages. The energy recovery circuit includes a storage capacitor that dynamically biases potentials of the electrode stages of the multi-stage depressed collector and provides recovered energy from the electrode stages of the multi-stage depressed collector to the modulator. The circuit may also include a step-down transformer, where the electrode stages of the multi-stage depressed collector are electrically connected to separate taps on the step-down transformer.
- Inventors:
- Issue Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1224820
- Patent Number(s):
- 9177748
- Application Number:
- 14/174,637
- Assignee:
- The Board of Trustees of the Leland Stanford Junior University
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- AC02-76SF00515
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 Feb 06
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS
Citation Formats
Kemp, Mark A. Pulsed depressed collector. United States: N. p., 2015.
Web.
Kemp, Mark A. Pulsed depressed collector. United States.
Kemp, Mark A. Tue .
"Pulsed depressed collector". United States. https://www.osti.gov/servlets/purl/1224820.
@article{osti_1224820,
title = {Pulsed depressed collector},
author = {Kemp, Mark A},
abstractNote = {A high power RF device has an electron beam cavity, a modulator, and a circuit for feed-forward energy recovery from a multi-stage depressed collector to the modulator. The electron beam cavity include a cathode, an anode, and the multi-stage depressed collector, and the modulator is configured to provide pulses to the cathode. Voltages of the electrode stages of the multi-stage depressed collector are allowed to float as determined by fixed impedances seen by the electrode stages. The energy recovery circuit includes a storage capacitor that dynamically biases potentials of the electrode stages of the multi-stage depressed collector and provides recovered energy from the electrode stages of the multi-stage depressed collector to the modulator. The circuit may also include a step-down transformer, where the electrode stages of the multi-stage depressed collector are electrically connected to separate taps on the step-down transformer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {11}
}
Works referenced in this record:
Traveling wave tube with depressed collector power supply
patent, July 1978
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Electron beam device having a direct current feed with switching stages therein
patent, August 1995
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Inductive output tube with multistage depressed collector electrodes providing a near-constant efficiency
patent, July 1997
- Symons, Robert S.
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System and method for recovering power from a traveling wave tube
patent, August 2000
- Cardwell, Jr., Gilbert I.; Collins, Jr., John A.; Phelps, Thomas K.
- US Patent Document 6,111,358
Multiple stage depressed collector (MSDC) klystron based amplifier for ground based satellite and terrestrial communications
patent, April 2003
- Cascone, Michael J.; Oiesen, Eric
- US Patent Document 6,552,490
Dynamic depressed collector
patent, February 2011
- Cascone, Michael J.; Lazar, John A.; Overstreet, John Brinson
- US Patent Document 7,888,873
Klystron modulator system incorporating a pulsed depressed collector
conference, June 2013
- Kemp, Mark A.; Jensen, Aaron; Neilson, Jeff
- 2013 IEEE 40th International Conference on Plasma Sciences (ICOPS), 2013 Abstracts IEEE International Conference on Plasma Science (ICOPS)
Pulsed depressed collector for high-efficiency RF systems
conference, May 2013
- Kemp, Mark A.; Jensen, Aaron; Neilson, Jeff
- 2013 14th International Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International Vacuum Electronics Conference (IVEC)