DocumentCode
1000451
Title
The dual-aperture counter wound log-spiral antenna direction-finder system
Author
Montague, Hill ; Margosian, John W. ; Horrocks, Michael J. ; Dyson, John D.
Author_Institution
SCOPE Electronics Inc., Reston, VA, USA
Volume
21
Issue
2
fYear
1973
fDate
3/1/1973 12:00:00 AM
Firstpage
224
Lastpage
226
Abstract
One of the problems of the spiral-antenna direction finder (DF) is the alteration of phase reference with logarithm of the frequency [1]. Compensation would require a special network operating over the bandwidth of the DF antenna. This communication describes a technique using two antenna apertures which are identical except for the sense of winding of the antenna arms. The frequency dependent error is canceled with signal averaging after phase detection of each antenna. The same measurement technique could be used to measure elevation angle by phase comparison.
Keywords
Log-spiral antennas; Radio direction-finding; Radio navigation antennas; Antenna measurements; Aperture antennas; Arm; Bandwidth; Counting circuits; Directive antennas; Frequency dependence; Measurement techniques; Phase detection; Wounds;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/TAP.1973.1140467
Filename
1140467
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