Diversity antenna for radio communications

Details Diversity antenna for radio communications Diversity antenna for radio communications

1995-03-07

1998-06-09

Hajec, Donald T.

Communications: radio wave antennas

Antennas

Plural separate diverse type

343727, 343722, 343794, 343795, H01Q 2100

Patent

active

057641935

ABSTRACT:
A diversity antenna for radio communications including a pair of conductive thin-film patterns used for a first antenna and another pair of conductive thin-film patterns used for a second antenna, the thin-film patterns being installed on a printed circuit board along the direction of the length of the circuit board; a first choke coil which is used to stop a leakage current from the first antenna and cause attenuation of a coupling current from the second antenna, the first choke coil being installed at a location where the leakage current distribution of the first antenna reaches the maximum in a feeder cable connected to the first antenna; and a second choke coil which is used to stop the leakage current from the second antenna, the second choke coil being installed at a location where the leakage current distribution of the second antenna reaches the maximum in a feeder cable for the second antenna.

REFERENCES:
patent: 2485457 (1949-10-01), Potter
patent: 3879735 (1975-04-01), Campbell et al.
patent: 4038662 (1977-07-01), Turner
patent: 4117492 (1978-09-01), Arnold et al.
patent: 4940989 (1990-07-01), Austin
patent: 5412392 (1995-05-01), Tsunekawa

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