Patent Number: 6,512,487

Title: Wideband phased array antenna and associated methods

Abstract: A wideband phased array antenna includes an array of dipole antenna elements on a flexible substrate. Each dipole antenna element has a medial feed portion and a pair of legs extending outwardly therefrom, and adjacent legs of adjacent dipole antenna elements have respective spaced apart end portions to provide increased capacitive coupling between the adjacent dipole antenna elements. Preferably, each leg has an elongated body portion, and an enlarged width end portion connected to an end of the elongated body portion. Thus, a phased array antenna with a wide frequency bandwith and a wide scan angle is obtained by utilizing tightly packed dipole antenna elements with large mutual capacitive coupling. Conventional approaches have sought to reduce mutual coupling between dipoles, but the present invention makes use of, and increases, mutual coupling between the closely spaced dipole antenna elements to prevent grating lobes and achieve the wide bandwidth.

Inventors: Taylor; Robert Charles (Melbourne, FL), Munk; Benedikt A. (Columbus, OH), Durham; Timothy Earl (Palm Bay, FL)

Assignee: Harris Corporation

International Classification: H01Q 9/28 (20060101); H01Q 21/06 (20060101); H01Q 9/04 (20060101); H01Q 21/00 (20060101); H01Q 001/38 ()

Expiration Date: 01/28/2020