A 3.5-dB noise-figure, S-band, medium-power, forward-wave, injected-beam crossed-field amplifier

Wadhwa, R.P.; Duzer, T. Van

doi:10.1109/proc.1965.3799

Cited by 11 publications

(4 citation statements)

References 7 publications

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“…This work was performed at Litton Industries, San Carlos, : Formerly with Research Laboratory, Litton Industries, San Carlos, California. 124 R. P. Wadhwa on regarding space-charge smoothing have now been experimentally verified (Mantena and Van Duzer 1963, Wadhwa and Van Duzer 1965. Noise-figure calculations from.…”

Section: Introductionmentioning

confidence: 91%

“…Because of the interest of recent low-noise (Mantena and Van Duzer 1963, Van Duzer etal. 1965, Wadhwa and Van Duzer 1965 measurements it was considered desirable to look further into the problem of noise-figure calculations in an injectedbeam crossed-field device. The beam fluctuations at the gun exit were obtained by using transformation equations (Wadhwa 1964) similar to those of Van Duzer.…”

Section: Introductionmentioning

confidence: 99%

“…1. The length of the drift region is arbitrary; its necessity arises due to the fact that (1} there is always some finite length of the shoe (dummy anode) needed for proper matching at the input to the delay line, (2) in some cases it serves as a velocity-jumptype noise transformer (Wadhwa and Van Duzer 1965) and/or as a transition region designed to match 'the boundary conditions on the two Downloaded by [Universitaetsbibliothek Giessen] at 02:31 01 November 2014…”

Section: Introductionmentioning

confidence: 99%

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Noise Transport in an Injected-beam Crossed-field Device†

Wadhwa

1967

International Journal of Electronics

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The various beam fluctuations at the gun exit of a crossed-fleld device are used to determine the excitation of the various modes. (These fluctuations at the gun exit are computed by transforming the fluctuations at the cathode surface by a method mentioned in the paper but discussed in detail elsewhere.) The excitation of the various modes is associated with the equivalent voltage of the corresponding mode. Noise-figure calculations are made, both under five-mode and three-mode excitation. For the three-mode-excitation case the two cyclotron 'modes are neglected. The computed results are compared with the experimental results. It is found tha.t the noise-figure value goes down as the beam is brought close to the delay line. For operation of the gun under different optimum conditions (keeping V acclB2 = constant) the noise-figure value does not seem to change appreciably as found from experiments.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Noise Transport in an Injected-beam Crossed-field Device†

Wadhwa

1967

International Journal of Electronics

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“…Even though these MVEDs are not very common today, this is the type used in this dissertation, and a summary of them is given here. Many different Linear format injected beam CFAs have been tested [16,84,[89][90][91], and a few important observations are noted here.…”

Section: Linear Format Injected Beam Cfasmentioning

confidence: 92%

Simulation of a Crossed-Field Amplifier Using a Modulated Distributed Cathode

Pearlman¹

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I would like to thank the Boise State University department of Electrical and Computer Engineering for financial support of this research. I thank the U.S. Air Force Office of Scientific Research for their financial support under Grant FA9550-12-C-0066. I also express my gratitude to TechX Corporation for their support of our work with Vsim and in particular David Smithe for his help. And, of course, I am immensely grateful to the review committee, Wan Kuang, Kris Campbell, Jim Browning, and Yue Ying Lau for their time and effort in validating this dissertation. I also want to thank Janos Cserna for helping develop much of the experiment, specifically the X-Y stage used to measure the dispersion. I also wish to thank Kyle Straub and Tyler Rowe for their part in developing the experimental setup, and for their collaboration.

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U.S.A. National Committee Report, Fifteenth URSI Assembly, Munich, September 1966: Radio Electronics; Progress in Radio Electronics

Heffner¹,

Gould²,

Siegman³

et al. 1966

Radio Science

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The generation of new laser devices, techniques, ideas, and applications continued at an unslowing pace during 1963–1966. While no large‐scale or commercially important laser applications have yet emerged, lasers have found innumerable and often irreplaceable applications both in science and in technology. Increasing numbers of useful commercial applications are slowly beginning to emerge at the end of the period.

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A 3.5-dB noise-figure, S-band, medium-power, forward-wave, injected-beam crossed-field amplifier

Cited by 11 publications

References 7 publications

Noise Transport in an Injected-beam Crossed-field Device†

Noise Transport in an Injected-beam Crossed-field Device†

Simulation of a Crossed-Field Amplifier Using a Modulated Distributed Cathode

U.S.A. National Committee Report, Fifteenth URSI Assembly, Munich, September 1966: Radio Electronics; Progress in Radio Electronics

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