THE ANALYSIS OF A LOG-PERIODIC ZIG-ZAG ANTENNA.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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During recent years, logarithmically periodic antennas have been widely used due to their frequency response characteristics, simplicity of design and directivity. However, their theory of operation still is in a development phase, and very few models have been fully analyzed. The present paper is an attempt to analyze the operation of a zig-zag model that has the property of being symmetrical, and suitable for operation against ground. The radiation pattern of the antenna is obtained for different models of current distribution, and, finally, the impedance characteristics and an approximate current distribution are obtained, using non-uniform transmission line theory. The results obtained show reasonable agreement with experimental data, and confirm conclusions drawn from physical considerations. Author
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