DocumentCode :
386918
Title :
Automatic tracking antenna array for the 217 mc telemetering band (APOTA)
Author :
Oltman, H. ; Bittner, B.
Author_Institution :
Sandia Corporation, Albuquerque, NM, USA
Volume :
4
fYear :
1966
fDate :
21-25 March 1966
Firstpage :
83
Lastpage :
86
Abstract :
Apota is a 20 db gain, circularly polarized, tracking antenna for the 217 MC Telemetering Band. It is composed of seven helical antennas forming a 
pencil beam with very low side lobes, and a phase shifter which cants the beam and causes it to nutate. Apota has tracked aircraft at 40,000 feet up to 240 miles which is the distance at which it meets the horizon.
pencil beam with very low side lobes, and a phase shifter which cants the beam and causes it to nutate. Apota has tracked aircraft at 40,000 feet up to 240 miles which is the distance at which it meets the horizon.Keywords :
Aircraft; Antenna arrays; Distortion; Gain; Helical antennas; Phase shifters; Phased arrays; Polarization; Satellite ground stations; Transmission lines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
1958 IRE International Convention Record
Conference_Location :
New York, NY, USA
Type :
conf
DOI :
10.1109/IRECON.1956.1150467
Filename :
1150467
Link To Document :
