On the double nature of transmission zeros in microstrip structures

1 July 1978

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE

Vol. 66 (7) , 800-802
https://doi.org/10.1109/proc.1978.11021

Abstract

The EM nature of transmission zeros in microstrip structures has been the subject of several discussions. A liquid crystal thermal mapping technique is used for detecting the magnetic field distribution inside rectangular structures at the frequencies of the transmission zeros. In this way a perceptible evidence is given to previous theoretical results, which have pointed out the existence of two types of transmission zeros, called modal zeros and interaction zeros.

Keywords

FILTERING THEORY
MICROSTRIP
RESONANT FREQUENCY
OSCILLATORS
EQUATIONS
CAPACITORS
COMMUNICATION SYSTEM CONTROL
MICROWAVE INTEGRATED CIRCUITS
MAGNETIC ANALYSIS
MAGNETIC LIQUIDS

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