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Proceedings Paper

Short-duration positive and negative pulses caused by unequal phase velocities of coupled strip lines
Author(s): Iwata Sakagami; Satoshi Chino
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Paper Abstract

Short-duration pulses caused by the difference of even and odd mode phase velocities that arise in two strip coupled line networks are discussed on the basis of network functions derived from signal flow graphs. A ramp-waveform of rise-time 0.1 nsec is assumed as an input. Simulated waveforms are presented by using the fundamental transmission line equation in an inhomogeneous medium. With regard to the even and odd mode phase velocities, Ve and Vo, either Ve < Vo or Ve >= Vo takes place according to the cross-sectional structure. Referring to a microwave C-section, a directional coupler, and open/short terminal networks, several patterns of output responses are shown: The polarity of the short-duration pulses can be changed by the cross-sectional structure, or by network terminal conditions. The amplitude of the first short pulse increases up to one half of the amplitude of an incident ramp waveform as the coupling is weaker, and other pulses appearing after the first short pulse become so small as to be negligible.

Paper Details

Date Published: 13 May 1994
PDF: 11 pages
Proc. SPIE 2154, Intense Microwave Pulses II, (13 May 1994); doi: 10.1117/12.175755
Show Author Affiliations
Iwata Sakagami, Muroran Institute of Technology (Japan)
Satoshi Chino, Muroran Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 2154:
Intense Microwave Pulses II
Howard E. Brandt, Editor(s)

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