Mobile communications

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Patent

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Details

455436, 455562, H04Q 722

Patent

active

059603437

ABSTRACT:
A slotted wave-guide antenna is attached low on a cellular phone tower. Horizontally polarize radiation in a toroidal pattern from the wave-guide antenna is used to communicate with aircraft. The wave-guide antenna radiation pattern is about 6.degree. thick. An antenna on top of the tower transmits vertically polarized radiation to communicate with automobiles and pedestrians.

REFERENCES:
patent: 4297707 (1981-10-01), Brunner et al.
patent: 4747160 (1988-05-01), Bossard
patent: 4800389 (1989-01-01), Reger et al.
patent: 5212804 (1993-05-01), Choate
patent: 5444762 (1995-08-01), Frey et al.
patent: 5455964 (1995-10-01), Roos et al.
patent: 5519761 (1996-05-01), Gilhousen
patent: 5557656 (1996-09-01), Ray et al.

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