Title :
Investigation of spiral performance over tightly spaced ground planes
Author :
Holzheimer, T.R. ; Holloway, J.C.
Author_Institution :
E-Systems, Inc., Greenville, TX, USA
fDate :
June 28 1993-July 2 1993
Abstract :
The performance of a spiral antenna was measured and predicted using both the Numerical Electromagnetic Code (NEC) and the patch code for various tight spacings above a conductive ground plane. Spacings investigated were for physically realizable installations varying from 0.032 inch to 0.5 inch. Model limitations are addressed for comparison of measured to predicted data. Performance described includes antenna pattern shape, gain, and axial ratio. An assessment of what is considered good performance in the presence of tightly spaced ground planes is made.<>
Keywords :
antenna radiation patterns; gain measurement; spiral antennas; 32 to 500 thou; Numerical Electromagnetic Code; axial ratio; conductive ground plane; gain; patch code; pattern shape; performance; spiral antenna; tightly spaced ground planes; Antenna measurements; Arm; Degradation; Electromagnetic measurements; Frequency; Gain measurement; National electric code; Predictive models; Shape; Spirals;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385309
