Cellular mobile radiotelephone system using tilted antenna radia

Details Cellular mobile radiotelephone system using tilted antenna radia Cellular mobile radiotelephone system using tilted antenna radia

1979-03-08

1981-02-03

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

455 33, 455 50, 455 54, 455 57, H04B 700

Patent

active

042491819

ABSTRACT:
In cellular mobile radiotelephone systems employing reuse of a predetermined set of channels in adjacent iterations of a pattern of cells (FIG. 1), average signal-to-interference ratio in at least one cell region of interest is improved by tilting the antenna (11,12) gain pattern center-beam line of an antenna serving that region below the horizontal (FIG. 3). In one embodiment the tilt (.theta.) is sufficient to create a reduced-gain notch (FIG. 8) in the center-beam portion of the pattern.

REFERENCES:
patent: 3663762 (1972-05-01), Joel
patent: 3922677 (1975-11-01), Tomkewitsch et al.
patent: 4128740 (1978-12-01), Graziano

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