Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 19, 2008
Patent Application Number
10584272
Date Filed
December 22, 2004
Patent Primary Examiner
Patent abstract
An antenna device using an approximate Luneberg lens, wherein high gain and low side-lobe are made compatible. A lens antenna device comprising, combine with each other, a radio wave lens (1) formed of a dielectric satisfying the condition, 0<a≦r, where the distance from the front surface of a lens (4) to the focal point of the lens is a, and the radius of the lens r, and a primary radiator (2) having a 10-dB beam width θ wherein A, determined by the expression, A=θ/2×(1+2a/r), is at least 40 and up to 80, more preferably at least 50 and up to 70.
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