Three band monopole antenna

Details Three band monopole antenna Three band monopole antenna

1977-03-17

1979-03-20

Smith, Alfred E.

Communications: radio wave antennas

Antennas

With lumped reactance filter in active antenna

343745, 343850, 343861, H01Q 100, H01Q 900, H01Q 150

Patent

active

041456939

ABSTRACT:
A three band monopole antenna with such length as to be of greater electrical length than a quarter wavelength of the two highest frequency bands and shorter than a quarter wavelength of the lowest frequency band. The antenna system includes a matching network at its base matching the antenna on three frequency bands related by, substantially, the progression 1, 2, 4, and with the matching network including a shunt inductor and an inductor and capacitor in series with the signal feedpoint.

REFERENCES:
patent: 2118429 (1938-05-01), Duttera
patent: 2440081 (1948-04-01), Fick
patent: 3775707 (1973-11-01), Frazier
patent: 3909830 (1975-09-01), Campbell
The A.R.R.L. Antenna Book, The American Radio Relay League, Newington, Connecticut, 1970, pp. 195-196.

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