Antenna assembly for a portable transceiver

Details Antenna assembly for a portable transceiver Antenna assembly for a portable transceiver

1993-05-17

1995-08-08

Hajec, Donald

Communications: radio wave antennas

Antennas

Active sleeve surrounds feed line

343792, 343702, H01Q 124, H01Q 916

Patent

active

054403170

ABSTRACT:
An antenna assembly for use with a portable transceiver provides improved communication between the portable transceiver and a base station. A novel antenna assembly is created wherein the radiating portion is elevated above the handset by combining a half wavelength sleeve dipole antenna with a coaxial line section followed by a quarter wavelength choke. Such a configuration reduces the antenna-housing interaction. The quarter wavelength choke prevents the coaxial transmission line from radiating RF energy, and therefore limits the radiation to the sleeve dipole portion of the antenna assembly.

REFERENCES:
patent: 2486597 (1949-11-01), Greene
patent: 3656167 (1972-04-01), Lea
patent: 4647941 (1987-03-01), Myer
patent: 4658260 (1987-04-01), Myer
patent: 4989012 (1991-01-01), Martensson et al.
patent: 5181043 (1993-01-01), Cooper
H. E. King and J. L. Wong "Effects of a Human Body on a Dipole Antenna at 450 and 900 MHz", May 1976, pp. 376-379.

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