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Approximate expressions for the directivity of a circular microstrip-patch antenna

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1 Author(s)
Mahony, J.D. ; MMS UK Ltd, Stevenage

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

Published in:

Antennas and Propagation Magazine, IEEE  (Volume:43 ,  Issue: 4 )

Date of Publication:

Aug 2001

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