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149 results on '"Giri, D. V."'

1. Velocity Gauge Potentials in Electrodynamics

Author

Giri, D. V., Tesche, Frederick M., and Morgan, Michael A.

Subjects
Physics - Classical Physics, Physics - Physics Education
Abstract

Vector and scalar potentials are used for convenience in solving boundary value problems involving electromagnetic (EM) fields. The potentials are made unique by choosing a non-unique gauge relationship. The most commonly used gauges are those named for Lorenz and Coulomb, both of which may be defined as special cases of what is termed the velocity gauge, or v-gauge. This generalized gauge is not usually taught to students of electrodynamics. In this paper, we review properties of the velocity gauge, including EM field invariance, and demonstrate its application via an example., Comment: 11 pages, 6 figures, double column

Published
2022

9. Communication Uniqueness of Electromagnetic Fields Using Velocity-Dependent Gauge Potentials

Author

Giri, D. V., Tesche, F. M., and Morgan, M. A.

Abstract

This communication is a condensed version of the work by Giri et al. (2022). Vector and scalar potentials are used for convenience in solving boundary value problems involving electromagnetic (EM) fields. Common gauges are those named for Lorenz and Coulomb, both of which are special cases of what is termed the velocity gauge, or $v$ -gauge, where $v$ is an arbitrary complex propagation velocity. This generalized gauge is not usually taught to students of electrodynamics. In this communication, we briefly describe the $v$ -gauge, including EM field invariance, and demonstrate its application via an example.

Published
2023
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29. Intermediate and Far Fields of a Reflector Antenna Energized by a Hydrogen Spark-Gap Switched Pulser

Author

Giri, D. V., Lehr, J. M., Prather, W. D., Baum, C. E., and Torres, R. J.

Subjects
Earth stations -- Design and construction, Business, Chemistry, Electronics, Electronics and electrical industries
Abstract

Previously, the design, fabrication, and testing of a pulser with a parabolic reflector antenna, known as a prototype impulse-radiating antenna (IRA), had been presented in the IEEE TRANSACTIONS ON PLASMA SCIENCE in 1997. The radiating system has now been more fully characterized with additional measurements and computations of near-field, intermediate, and far fields on bore sight. Index Terms--Reflector antenna, short pulse, UWB.

Published
2000

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