Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1984-05-01
1986-09-09
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343844, 455273, G01S 302, H01Q 2100, H04B 106
Patent
active
046112120
ABSTRACT:
The field component diversity antenna and receiver arrangement comprises at least a first pair of parallel spaced, straight, vertical elemental antenna elements disposed substantially parallel to the electric field component of a transmitted signal to receive the transmitted signal in a multipath fading environment where the electric field and magnetic field components are uncorrelated and a 180.degree. hybrid circuit coupled to the first pair of spaced antenna elements to provide a first output signal proportional to the electric field components and a second output signal proportional to the magnetic field component. The spaced elemental antenna elements may be monopole elements or dipole elements. The pair of antenna element may be connected together by a straight conductor to enhance the magnetic field component. The first and second output signals may be combined by known diversity combining arrangement to achieve a diversity advantage.
REFERENCES:
patent: 1738337 (1929-12-01), Weinberger
patent: 2305917 (1942-12-01), Beers
patent: 2417793 (1947-03-01), Wehner
patent: 2786133 (1957-03-01), Dyke
patent: 3029338 (1962-04-01), Sichak
patent: 3202997 (1965-10-01), Schell
patent: 3222677 (1965-12-01), Fink
patent: 3396398 (1968-10-01), Dunlavy
patent: 3449751 (1969-06-01), Schroeder
patent: 3460144 (1969-10-01), Hannan
patent: 3475687 (1969-10-01), Pierce
Parsons et al., "Diversity Techniques for Mobile Radio Reception," Aug. 1976, IEEE Transactions on Vehicular Technology, vol. VT-25, No. 3.
Blum Theodore M.
Cain David C.
ITT Corporation
Meagher Thomas F.
O'Halloran John T.
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