AM-FM-cellular telephone multiband antenna for motor vehicle

Details AM-FM-cellular telephone multiband antenna for motor vehicle AM-FM-cellular telephone multiband antenna for motor vehicle

1986-01-22

1988-01-26

Yasich, Daniel M.

Communications: radio wave antennas

Antennas

With vehicle

343903, H01Q 110

Patent

active

047219653

ABSTRACT:
An AM-FM-cellular telephone multiband antenna adapted for mounting on a motor vehicle fender includes a first mast section having a length of one quarter wavelength at a first frequency near 835 MHz in the cellular telephone band, a phasing coil connected collinearly above the first mast section and having an effective electrical length of three halves wavelength at the first frequency and a second mast section connected collinearly above the phasing coil and having a length of one half the wavelength at the first frequency, whereby the phasing coil and second mast section increase the gain of the total assembly compared to a quarter wavelength antenna for cellular telephone operation at frequencies near the first frequency and further tune the antenna to resonance at a second frequency in the FM radio while providing reception at frequencies in the AM radio band. The antenna is especially suited for power telescoping operation.

REFERENCES:
patent: 1783025 (1930-11-01), Meissner
patent: 2648771 (1953-08-01), Cork
patent: 2854667 (1958-09-01), Taylor et al.
patent: 2898590 (1959-08-01), Pichitino
patent: 3172109 (1965-03-01), Senrui
patent: 3419869 (1968-12-01), Altmayer
patent: 3445849 (1969-05-01), Sanford
patent: 4041498 (1977-08-01), Freimark et al.
patent: 4095229 (1978-06-01), Elliott
patent: 4117493 (1978-09-01), Altmayer et al.
patent: 4675687 (1987-06-01), Elliott

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