DocumentCode :
386969
Title :
The directional coupler antenna
Author :
Fink, Colin
Author_Institution :
Litton Industries, College Park, MD, USA
Volume :
7
fYear :
1966
fDate :
21-25 March 1966
Firstpage :
103
Lastpage :
118
Abstract :
The combination of four broadband 3 db directional couplers and four radiating elements into an antenna for direction-finding purposes has been investigated. Under theoretical conditions, two overlapping beams with constant crossover level and variable crossover slope over an infinite frequency band can be obtained. All four radiators are active in producing each of the two main lobes for simultaneous comparison, thereby providing the pattern effect of two antennas of similar dimensions. Practically, an antenna pattern with crossover level 3 to 5 db below beam maximum, and pointing accuracy of 
degrees over a 2. 2 to 1 bandwidth has been achieved.
degrees over a 2. 2 to 1 bandwidth has been achieved.Keywords :
Antenna radiation patterns; Aperture antennas; Bandwidth; Broadband antennas; Directional couplers; Directive antennas; Educational institutions; Frequency; Navigation; Shape;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
1958 IRE International Convention Record
Conference_Location :
New York, NY, USA
Type :
conf
DOI :
10.1109/IRECON.1959.1150788
Filename :
1150788
Link To Document :
