Wideband antenna with frequency dependent ferrite core inductor

Details Wideband antenna with frequency dependent ferrite core inductor Wideband antenna with frequency dependent ferrite core inductor

1979-04-11

1980-05-06

Lieberman, Eli

Communications: radio wave antennas

Antennas

With vehicle

343752, 343787, 343828, H01Q 132, H01Q 938

Patent

active

042019893

ABSTRACT:
Disclosed is a low profile wideband VHF antenna wherein impedance matching ver the required operating band is provided without the use of multiple circuit components, for tuning, switched into and out of the antenna by an assembly of switch contacts. The antenna is comprised of an end and preferably a bottom fed vertical radiating rod or monopole element whose upper end is terminated in a substantially flat circular top capacitance disc via a frequency sensitive inductance constructed of a ferrite core inductor whose .mu. characteristic varies approximately inversely with respect to frequency.

REFERENCES:
patent: 3967276 (1976-06-01), Goubau
patent: 4047178 (1977-09-01), Czerwinski

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