Low profile array antenna system with independent multibeam cont

Details Low profile array antenna system with independent multibeam cont Low profile array antenna system with independent multibeam cont

1984-11-08

1990-10-09

Sikes, William L.

Communications: radio wave antennas

Antennas

Microstrip

343829, 343830, 343853, H01Q 0000

Patent

active

049623834

ABSTRACT:
An array antenna system has been described incorporating a plurality of antenna elements each having two quarter wave patches or monopoles for radiating microwave energy in a forward and reverse direction, a first and second beam forming network coupled to a coupler for each antenna element, wherein microwave energy coupled to the antenna element from one beam forming network couples lagging phase to one of the two quarter wave patches and from the second beam forming network couples lagging phase to the other quarter wave patch. The invention overcomes the problem of antenna utilization by providing two autonomous beam patterns with independent control or for overcoming the problem of antenna pattern performance by providing a second pattern which may be combined with the first pattern to provide, for example, an improved front-to-back ratio.

REFERENCES:
patent: 3308468 (1967-03-01), Hannan
patent: 3710329 (1973-01-01), Mailloux
patent: 4101901 (1978-07-01), Kommrusch
patent: 4128839 (1978-12-01), McComas
patent: 4257050 (1981-03-01), Ploussions
patent: 4315262 (1982-02-01), Achmpora et al.
patent: 4316192 (1982-02-01), Acoraci
patent: 4318107 (1982-03-01), Pierrot et al.
patent: 4401988 (1983-08-01), Kaloi
patent: 4414550 (1983-11-01), Tresselt
patent: 4454514 (1984-06-01), Itoh et al.
J. H. Dunlavy, Jr., "New High-Frequency Antenna: The passive Network Array", Electronics, Jan. 3, 1964, pp. 32-36.
C. D. LaFond, "Promising Array Developed, Successfully Tested, Then Dropped", Missiles and Rockets, Mar. 9, 1964, pp. 33-35.

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