Whip-type antenna which can slide-adjust the tuning frequency

Details Whip-type antenna which can slide-adjust the tuning frequency Whip-type antenna which can slide-adjust the tuning frequency

1977-08-17

1979-02-13

Smith, Alfred E.

Communications: radio wave antennas

Antennas

Rod type

343750, H01L 110

Patent

active

041398521

ABSTRACT:
In a whip-type antenna which can be used for either mobile or fixed station, the improvement is characterized in that the antenna has at least a portion of an antenna element thereof wound in turns so as to impart the inductance to the antenna element and a power-operated motor is capable of varying the turns and pitches of the above wound antenna element for varying the inductance, which leads to the variation of tuning frequency of the antenna.

REFERENCES:
patent: 3671972 (1972-06-01), Spilsbury et al.

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