Cellular antennas with improved front-to-back performance

Details Cellular antennas with improved front-to-back performance Cellular antennas with improved front-to-back performance

1997-02-04

1999-02-16

Wong, Don

Communications: radio wave antennas

Antennas

Plural separate diverse type

343725, 343770, 343793, 343872, 343834, H01Q 2124

Patent

active

058725440

ABSTRACT:
A 90 degree azimuth beamwidth is achieved in a narrow cellular antenna, by inclusion of sidewalls. To improve front-to-back performance, slot radiating elements extending through the sidewalls re-radiate signals behind the antenna. Signals re-radiated from the slot elements are effective to partially cancel signals otherwise radiated behind the antenna as a result of diffraction. H-shaped slots are described for sidewall use and side-to-side slots are described for endwall use. Slots may be dielectrically loaded by contiguous portions of a radome.

REFERENCES:
patent: 4119970 (1978-10-01), Bogner et al.
patent: 4129871 (1978-12-01), Johns
patent: 4141012 (1979-02-01), Hockham et al.
patent: 4247858 (1981-01-01), Eichweber
patent: 4899165 (1990-02-01), Schadler
patent: 4907008 (1990-03-01), Dienes
patent: 5654722 (1997-08-01), Lundback et al.

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