Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1990-01-05
1991-06-04
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343822, 343850, 3437925, 342372, H01Q 916
Patent
active
050218000
ABSTRACT:
A single two terminal antenna, such as a dipole antenna, is used to supply the input signals for a two element adaptive array. This reduces the number of antennas required by the adaptive array to reject an inteference signal from two to one. The antenna is connected so that the phase information reflecting the direction of arrival of a received signal is preserved. The resulting single antenna adaptive array functions like a two element adaptive array. When the two terminal antenna is not located at the adaptive array, two transmission lines are required to carry the output signals of the antenna. In a similar manner, an N input adaptive array (where N is an even number) can use N/2 two terminal antennas to reject N-1 interference signals.
REFERENCES:
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patent: 2613349 (1952-10-01), Kandoian
patent: 3396398 (1968-08-01), Dunlavy
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patent: 4072956 (1978-02-01), Provencher
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patent: 4309769 (1982-11-01), Taylor, Jr.
patent: 4737793 (1988-04-01), Munson et al.
Bernard Widrow, Proceedings of the IEEE, vol. 55, No. 12, Dec. 1967, p. 2143.
Jones Allston L.
Le Hoang-anh
Wimer Michael C.
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