Space/angle diversity configurations for cellular antennas

Details Space/angle diversity configurations for cellular antennas Space/angle diversity configurations for cellular antennas

1997-02-04

1999-02-16

Wong, Don

Communications: radio wave antennas

Antennas

With support for antenna, reflector or director

343892, H01Q 112

Patent

active

058725482

ABSTRACT:
Performance of multibeam cellular antenna systems is improved by use of space diversity in antenna placement and angle diversity in antenna alignment. Space/angle diversity is achieved on a single tower structure (20) by placement of eight antennas (B1-B8) in pairs at four spaced locations (I, II, III, IV) at the tower corners. Antennas are placed with an orthogonally directed pair at each location. For each orthogonal pair (e.g., B1 and B2 at location I) there is an antenna located at a different corner which is pointed between the orthogonal directions (e.g., B5 at location II). Antenna placement and alignment for achieving space/angle diversity in triangular tower configurations are also described.

REFERENCES:
patent: 3579244 (1971-05-01), Dempsey
patent: 4180820 (1979-12-01), Johns
patent: 4317122 (1982-02-01), Ben-Dov
patent: 5497166 (1996-03-01), Mahnad
patent: 5534882 (1996-07-01), Lopez

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