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717 results on '"Levush, B."'

703. Higher-order predistortion linearisation using cascaded lower-order nonlinearities.

Author

Qiu, J. X., Abe, D. K., Antonsen Jr., T. M., Danly, B. G., Levush, B., and Myers, R.

Subjects
*NONLINEAR theories, *ELECTRIC distortion, *ELECTRIC interference, *MATHEMATICAL analysis, *ELECTRIC currents, *OSCILLATIONS
Abstract

A technique for realising nonlinear functions of order a 5 using cascaded third-order nonlinear functions is described. The technique can be used to efficiently generate higher-order nonlinearities for predistortion linearisation applications. The use of two cascaded third-order functions is experimentally demonstrated to be comparable to a fifth-order implementation in performance. [ABSTRACT FROM AUTHOR]

Published
2004
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704. Experimental realization of millimeter-wave amplification by a sheet beam free electron laser.

Author

Ze-Xiang Zhang, Destler, W.W., Granatstein, V.L., Antonsen Jr., T.M., Levush, B., Rodgers, J., and Cheng, S.

Subjects
*FREE electron lasers, *MILLIMETER waves
Abstract

Examines the millimeter-wave amplification in a sheet beam free electron laser. Gain observed in a 54 centimeter wiggler; Wave energy absorption at off-resonance beam energy; Potential of the device configuration for producing equally high output power at low voltage.

Published
1994
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705. Experimental Performance of the NRL 8-Beam, 4-Cavity Multiple-Beam Klystron.

Author

Abe, D. K., Pershing, D. E., Nguyen, K. T., Wood, F. N., Myers, R. E., Eisen, E. L., Cusick, M., and Levush, B.

Subjects
*KLYSTRONS, *ELECTRONIC amplifiers, *ELECTRON gun, *ELECTRON beams, *ELECTRON emission, *CHARGE exchange, *CATHODES, *ELECTRONIC circuits
Abstract

Multiple-beam amplifiers (MBAs) represent a device technology with the potential to produce high-power, efficient amplifiers with relatively wide bandwidths that are compact, low-weight, low-noise, and operate at reduced voltages relative to comparable single-beam devices. To better understand the device physics and technical issues involved in the design, fabrication, and operation of these devices, the U.S. Naval Research Laboratory (NRL) has an on-going program to develop high peak power (> 600 kW) multiple-beam klystrons (MBKs) operating in S-band (∼3.3 GHz). © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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