Coupling an outer antenna with a radio receiver having a bar ant

Details Coupling an outer antenna with a radio receiver having a bar ant Coupling an outer antenna with a radio receiver having a bar ant

1978-04-24

1980-03-11

Lieberman, Eli

Communications: radio wave antennas

Antennas

With radio cabinet

343728, 343788, H01Q 124, H01Q 708

Patent

active

041930762

ABSTRACT:
Coupling an outer antenna with a radio receiver having a bar antenna is achieved by connecting the outer antenna to a coupling coil which is able to be removably mounted on a bar core of the bar antenna and by mounting the coupling coil on the bar core with such an orientation of the coupling coil that the signal received at the outer antenna does not cancel the signal received at the bar antenna. The connection between the outer antenna and the coupling coil may be made by the use of a coaxial cable with the outer conductor of the cable being not grounded to function as a ground plane. A series circuit of a switch and a resistor may be connected in parallel with the coupling coil to selectively reduce the quality factor Q of the bar antenna.

REFERENCES:
patent: 3364492 (1968-01-01), Griffee
patent: 3518681 (1970-06-01), Kiepe
patent: 3680128 (1972-07-01), Wille et al.
Hoffer, RCA TN No. 228, 1/5/59, pp. 343-702.

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