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