Communications: radio wave antennas – Antennas – Active sleeve surrounds feed line
Patent
1986-01-21
1988-01-12
Sikes, William L.
Communications: radio wave antennas
Antennas
Active sleeve surrounds feed line
343791, 343793, 343808, 343822, H01Q 916
Patent
active
047194715
ABSTRACT:
An FM antenna utilizes a generally rigid conductive element, as a dipole segment, that is connected in electrical communication with a capacitive segment. The capacitive segment can be manufactured from a preselected length of coaxial cable with the central conductor of the coaxial cable being connected in electrical communication with the dipole segment and with the cylindrical conductor, or braided shield, of the coaxial cable being connected to an electrical ground. A variable inductor is connected in electrical communication with the central conductor of the coaxial cable between the capacitive segment and an FM receiver. The central conductor of the capacitive element is connected serially between the dipole segment and the variable inductor. This configuration provides an omnidirectional antenna for use with FM receivers that is relatively small in size and inexpensive to manufacture.
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Hawranko G. E.
Johnson Doris J.
Sikes William L.
Westinghouse Electric Corp.
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