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Energy propagation with phase velocity in a waveguide
Author(s) -
Giakos George C.,
Ishii T. Koryu
Publication year - 1991
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650040311
Subject(s) - waveguide , pulse (music) , group velocity , optics , microwave , phase velocity , physics , phase (matter) , enhanced data rates for gsm evolution , energy (signal processing) , free space , time domain , transit time , computational physics , telecommunications , engineering , computer science , quantum mechanics , detector , transport engineering , computer vision
Transit‐time measurements of the leading edge of pulse‐modulated microwaves propagating in a waveguide have been performed in time domain. These measurements show that a part of the energy associated with the leading edge of the pulse propagates with a phase velocity exceeding the intrinsic velocity in free space. Calibration techniques and repeated measurements confirm this phenomenon.