DocumentCode
3189928
Title
Frequency invariant interferometry
Author
Musselman, R.L. ; Norgard, J.D.
Author_Institution
Outland Communications, Colorado Springs, CO, USA
fYear
1992
fDate
18-25 June 1992
Firstpage
2101
Abstract
Frequency-independent phase comparison interferometry as a method of direction finding is discussed. Theoretical relationships are derived that show that the electrical phase between two elements of an array can remain approximately constant over frequency. The theory is developed for log-periodic dipole arrays. Design and fabrication of a two-element interferometer using log-periodic antennas are discussed. Experimental results show that this array remains frequency independent over a three-octave bandwidth.<>
Keywords
dipole antennas; microwave antenna arrays; radio direction-finding; radiowave interferometers; direction finding; electrical phase; fabrication; frequency invariant interferometry; log-periodic dipole arrays; phase comparison interferometry; three-octave bandwidth; two-element interferometer; Bandwidth; Dipole antennas; Directive antennas; Frequency; Interferometry; Log periodic antennas; Phase measurement; Phased arrays; Springs; Wideband;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location
Chicago, IL, USA
Print_ISBN
0-7803-0730-5
Type
conf
DOI
10.1109/APS.1992.221452
Filename
221452
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