Communications: radio wave antennas – Antennas – Slot type
Patent
1995-08-16
1997-01-21
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Slot type
343906, H01Q 1310
Patent
active
055963374
ABSTRACT:
Simplified, high reliability slot array antennas are usable in cellular communication systems. In a flat panel form, an antenna includes a slot array with simplified feed enclosed within a back panel and a front radome structure. Use of a simplified feed, consisting of a vertical aluminum rod dielectrically spaced from an aluminum sheet including a vertical array of horizontally aligned slot openings, is made possible by horizontal slot offsets. With a linear feed rod, signal coupling to each slot in series is determined by the horizontal location of each slot relative to the feed rod. With a capacitive input coupling, there are no electrical contacts or connections in the internal feed path which may cause intermodulation effects. With a grounded aluminum array sheet and case construction, and capacitively-coupled feed, the antenna is resistant to lightning strikes. Antenna models with different beam tilts merely require substitution of an aluminum array sheet with different slot configurations punched therein. Narrower azimuth beamwidths are provided by use of multiple slot arrays and multiple beam antennas are adaptable to use of beam forming networks and active antenna beam steering and nulling techniques.
REFERENCES:
patent: 3015822 (1962-01-01), Brown et al.
patent: 3056130 (1962-09-01), Charman
patent: 3218644 (1965-11-01), Berry
patent: 3518688 (1970-06-01), Stayboldt et al.
patent: 3633207 (1972-01-01), Ingerson et al.
patent: 3696433 (1972-10-01), Killion et al.
patent: 3795915 (1974-03-01), Yoshida
patent: 4054874 (1977-10-01), Oltman, Jr.
patent: 4196436 (1980-04-01), Westerman
patent: 4409595 (1983-10-01), Park
patent: 4710775 (1987-12-01), Coe
patent: 4775866 (1988-10-01), Shibata et al.
patent: 4845506 (1989-07-01), Shibata et al.
patent: 4907008 (1990-03-01), Dienes
patent: 4958165 (1990-09-01), Axford et al.
patent: 4985708 (1991-01-01), Kelly
patent: 5158820 (1992-10-01), Scammell
patent: 5189433 (1993-02-01), Stern et al.
patent: 5289200 (1994-02-01), Kelly
patent: 5337065 (1994-08-01), Bonnet et al.
Hazeltine Corporation
Onders E. A.
Robinson K. P.
Wimer Michael C.
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