Array antenna with enhanced scanning

Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor

Reexamination Certificate

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Details

C343S812000, C343S814000, C343S816000, C343S820000

Reexamination Certificate

active

07855690

ABSTRACT:
The invention provides an improved array antenna, an array antenna system and an improved method for utilizing the improved array antenna and array antenna system. This is accomplished by an array antenna comprising a region of reference potential, e.g. a ground plane, and a spatially extended collection of at least two antenna elements capable of being at least partly balanced driven and at least partly unbalanced driven. The antenna elements have a first radiating element connected to a first port and a second radiating element connected to a second port. In other words, the antenna element has at least two ports. The radiating elements are arranged substantially adjacent and parallel to each other so as to extend at least a first distance approximately perpendicularly from said region of reference potential. The antenna element is further comprising a radiating arrangement connected to said first and said second radiating elements so as to extend at least a second distance above and approximately parallel to said region of ground reference.

REFERENCES:
patent: 4122447 (1978-10-01), Kawai et al.
patent: 5936590 (1999-08-01), Funder
patent: 6317099 (2001-11-01), Zimmerman et al.
patent: 2005/0219133 (2005-10-01), Elliot
patent: 2007/0091008 (2007-04-01), Mortazawi et al.
patent: 0590955 (1994-04-01), None
patent: 0884798 (1998-12-01), None
patent: 2 123 214 (1984-01-01), None
patent: WO 2004/107498 (2004-12-01), None

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