DocumentCode :
1004585
Title :
An isotropic frequency-independent antenna system for simultaneous omnidirectional Doppler shift removal
Author :
Dixon, Robert S.
Author_Institution :
Ohio State Univ. Observatory and the Ohio State Univ. Instruction and Research Computer Center, Columbus, OH USA
Volume :
22
Issue :
5
fYear :
1974
fDate :
9/1/1974 12:00:00 AM
Firstpage :
707
Lastpage :
709
Abstract :
Simultaneous omnidirectional Doppler shift removal may be accomplished by using a frequency-scanned line source antenna aligned in the direction of net motion. A progressive phase shift along the antenna, which varies linearly with frequency, is required to match the Doppler variation with angle. Simultaneous omnidirectional radiation is accomplished by transmitting bandlimited white noise into the antenna. The resulting antenna system is isotropic, frequency-independent, and radiates a narrow-band signal, as observed by a distant receiver.
Keywords :
Doppler effect; Frequency-independent antennas; Frequency-scanned arrays; Space-vehicle communications; Amplitude modulation; Directive antennas; Doppler shift; Frequency; Linear antenna arrays; Noise level; Radio transmitters; Receivers; Receiving antennas; White noise;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1974.1140867
Filename :
1140867
Link To Document :
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