Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1991-04-26
1993-08-17
Hille, Rolf
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343814, 343815, 343835, H01Q 21140, H01Q 19100, H01Q 19240, G01S 3020
Patent
active
052373363
ABSTRACT:
A radio direction finding antenna system including four identical radiating elements uniformly distributed on a circle around a conductive mast and designed to determine the angle of incidence of the propagation direction of a plane electro-magnetic wave relative to a reference direction, wherein the radiating elements are associated in first and second pairs of opposite radiating elements in which the elements are inverted relative to each other, and wherein the antenna system includes a processor unit comprising firstly a first matched power halver receiving the signals provided by the first pair of radiating elements and a second matched power halver identical to the first and receiving the signals provided by the second pair of radiating elements, and secondly a 3 dB-90.degree. type hybrid junction receiving the signals delivered by the matched power halvers and providing two output signals at a phase difference of 2.theta.-1/2.pi.. The invention is applicable to radio location.
REFERENCES:
patent: 2581444 (1952-01-01), Richardson et al.
patent: 2720648 (1955-10-01), Chambers
patent: 2953782 (1960-09-01), Byatt
patent: 4207572 (1980-06-01), Hipp et al.
patent: 4528567 (1985-09-01), Miles et al.
patent: 4636796 (1987-01-01), Imazeki
patent: 4814777 (1989-03-01), Monser
patent: 4870420 (1989-09-01), Apostolos
patent: 4983988 (1991-01-01), Franke
IEEE Transactions On Antennas and Propagation, vol. AP-31, No. 3, May 1983, pp. 451-455, IEE, New York, H. M. Elkamchouchi, "Cyindrical and Three-Dimensional Corner Reflector Antennas".
Brown Peter Toby
Hille Rolf
Societe Technique d'Application et de Recherche Electronique
LandOfFree
Omnidirectional antenna system for radio direction finding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Omnidirectional antenna system for radio direction finding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Omnidirectional antenna system for radio direction finding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2247421