DocumentCode :
2805989
Title :
The spiral antenna
Author :
Bawer, R. ; Wolfe, Joanna
Author_Institution :
Aero Geo Astro Corporation, Alexandria, VA, USA
Volume :
8
fYear :
1966
fDate :
21-25 March 1966
Firstpage :
84
Lastpage :
95
Abstract :
A simplified description of the radiation mechanism of the spiral antenna is given, and the effects of the various parameters on the characteristics of the cavity-backed Archimedian spiral are discussed. Experimental data illustrating the effect of cavity diameter, cavity depth, conductor loading, and spiral rate of growth are offered as design guides. Finally, a spiral antenna and balun feed are described. Over an octave frequency range, ellipticity ratios of less than 3 db have been maintained over azimuth angles greater than 
degrees, boresight errors have been virtually eliminated, and standing wave ratios of less than 2:1 have been realized.
degrees, boresight errors have been virtually eliminated, and standing wave ratios of less than 2:1 have been realized.Keywords :
Antenna theory; Arm; Conducting materials; Conductors; Contracts; Frequency; Instruments; Laboratories; Shape; Spirals;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
1958 IRE International Convention Record
Conference_Location :
New York, NY, USA
Type :
conf
DOI :
10.1109/IRECON.1960.1150893
Filename :
1150893
Link To Document :
