Title :
Frequency invariant interferometry
Author :
Musselman, Randall L. ; Norgard, John D.
Author_Institution :
Outland Commun., Colorado Springs, CO, USA
fDate :
5/1/1992 12:00:00 AM
Abstract :
The authors discuss frequency-independent phase comparison interferometry as a method of direction finding. Theoretical relationships are derived that show 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 are presented which show that this array remains frequency independent over a three-octave bandwidth
Keywords :
antenna arrays; radio direction-finding; radiowave interferometry; antenna arrays; direction finding; electrical phase; frequency independent interferometry; log-periodic dipole arrays; phase comparison interferometry; three-octave bandwidth; two-element interferometer; Bandwidth; Directive antennas; Frequency; Interferometry; Log periodic antennas; Phase measurement; Phased arrays; Receiving antennas; Testing; Wideband;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
