DocumentCode
1533935
Title
Approximate expressions for the directivity of a circular microstrip-patch antenna
Author
Mahony, J.D.
Author_Institution
MMS UK Ltd, Stevenage
Volume
43
Issue
4
fYear
2001
fDate
8/1/2001 12:00:00 AM
Firstpage
88
Lastpage
90
Abstract
The determination of directivity values for circular microstrip patches on thin substrates involves the use numerical integration procedures, which have to be repeated every time there is a change in patch-substrate permittivity, By a judicious use of certain approximations, it is shown here that it is possible to secure surprisingly accurate alternative descriptions of the patch directivity behavior (as a function of permittivity), in terms of either known tabulated functions, or functions that can be easily accommodated using a hand-held calculator
Keywords
antenna theory; approximation theory; directive antennas; microstrip antennas; approximation; circular microstrip-patch antenna; patch directivity; permittivity; thin substrates; Antenna radiation patterns; Antennas and propagation; Closed-form solution; Equations; Magnetic materials; Magnetic resonance; Microstrip antennas; Permittivity; Resonant frequency;
fLanguage
English
Journal_Title
Antennas and Propagation Magazine, IEEE
Publisher
ieee
ISSN
1045-9243
Type
jour
DOI
10.1109/74.951561
Filename
951561
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