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Phased array antenna with edge-effect mitigation

專利號
US11177571B2
公開日期
2021-11-16
申請人
RAYTHEON COMPANY(US MA Waltham)
發(fā)明人
David Liu; Kenneth S. Komisarek; John Yorko
IPC分類
H01Q9/04; H01Q21/06; H01Q1/52
技術(shù)領(lǐng)域
antenna,dielectric,array,corner,elements,substrate,in,patch,element,mutual
地域: MA MA Waltham

摘要

Phased array antenna systems with antenna elements having substrates with varying dielectric constants selected to reduce the self-return signal of corner elements in the array. In one example, a phase array antenna system includes a plurality of stacked-patch microstrip antenna elements arranged in a two-dimensional array, each stacked-patch microstrip antenna element of the plurality of stacked-patch microstrip antenna elements including a pair of conductive patches disposed above a ground plane on a dielectric substrate. The dielectric substrate of corner stacked-patch microstrip antenna elements in the array has a dielectric constant lower than a dielectric constant of the dielectric substrate of non-corner stacked-patch microstrip antenna elements in the array.

說明書

Referring to FIG. 1, there is illustrated an example of the configuration of a 6×4 antenna array 100, as may be used in S-band, for example, for the purposes of explanation. Each of the antenna elements 200 in the array may have the same or similar structure, but experience different mutual coupling and different effects based on their spatial positions within the array 100. In the illustrated example, antenna elements 200a are corner elements (there are 4 in the array 100), antenna elements 200b are horizontal edge elements (8 in the array), antenna elements 200c are vertical edge elements (4 in the array), and antenna elements 200d are interior elements (8 in the array). The example of the array 100 shown in FIG. 1 is a 6×4 array; however, those skilled in the art will appreciate, given the benefit of this disclosure, that the principles and techniques disclosed herein may be applied to arrays 100 of any size, not limited to a 6×4 configuration.

權(quán)利要求

1
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