14 September 1994 Observed precursor of pulsed radio waves
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Abstract
Experimental and theoretical analysis on pulsed radio wave propagation measurements, obtained through a series of time domain experiments in open space as well as in a waveguide, indicate that the precursor or the very early wavefront onset, slightly above the noise level, propagates with a speed equal to the phase velocity. Since it is observable, it may be useful for radio messages. Basic principles and experimental support are presented.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
George C. Giakos, Thomas Koryu Ishii, "Observed precursor of pulsed radio waves", Proc. SPIE 2275, Advanced Microwave and Millimeter-Wave Detectors, (14 September 1994); doi: 10.1117/12.186727; https://doi.org/10.1117/12.186727
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KEYWORDS
Wave propagation

Modulation

Phase velocity

Waveguides

Receivers

Transmitters

Microwave radiation

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