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Dielectric image line groove antennas for millimeter waves, Part I: Theoretical background

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2 Author(s)
K. Solbach ; AEG-Telfunkun, Ulm, West Germany ; I. Wolff

Dielectric image line groove antennas are very useful for the application in the millimeter-wave region. In this first part of a two-part paper, three different types of groove discontinuities under a dielectric image line for application in millimeterwave antennas are investigated: the equivalent circuits of 1) a slot discontinuity in a metallic ground plane and 2) a slot discontinuity in the metallization of a substrate material under a dielectric image line are derived theoretically using an approximation for the electromagnetic fields of the slots. 3)The equivalent circuit of cylindrical holes in a metallic ground plane under a dielectric image line is derived from measurements. The results are used to synthesize millimeterwave dielectric image line antenna arrays as described in part II of the paper.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:33 ,  Issue: 7 )