Comparative analysis of the dispersion characteristics of a slotline and a microstrip line

This paper compares the dispersion characteristic of a slotline with that of a microstrip line. A full wave analysis of a slotline including the excitation source is presented. All kinds of modes are taken into account, including a bound mode, leaky modes, and a residual wave. The line is excited by...

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Bibliographic Details
Main Authors: Kotlan, V., Machac, J., Mesa, F.
Format: Conference Proceeding
Language:English
Subjects:
bound mode
Cutoff frequency
eigenmode analysis
Equations
full wave method
leaky waves
Microstrip
microstrip line
Microwave propagation
Permittivity
Planar transmission lines
Propagation constant
residual wave
Slotline
Strips
Voltage
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Description
Summary:This paper compares the dispersion characteristic of a slotline with that of a microstrip line. A full wave analysis of a slotline including the excitation source is presented. All kinds of modes are taken into account, including a bound mode, leaky modes, and a residual wave. The line is excited by a time-harmonic source of constant current connected across the slot of the line. The theoretically predicted results have been verified by experiments and by simulations in the CST Microwave Studio. A continuous behaviour is documented, rather than the step-like behaviour of waves propagating along the investigated lines as predicted by a pure eigenmode analysis.
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2009.5384229