Dynamic polarization and coupling control for a steerable cylindrically fed holographic antenna

An antenna and feeding technology, applied in the antenna field, can solve the problem of sacrificing beam performance and dynamic polarization control

Active Publication Date: 2016-09-21
KYMETA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, combining mechanical motion in one axis with electronic scanning in an orthogonal axis has produced high-aspect-ratio structures that require less volume but sacrifice beam performance or dynamic polarization control, such as Thinkom's system

Method used

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  • Dynamic polarization and coupling control for a steerable cylindrically fed holographic antenna
  • Dynamic polarization and coupling control for a steerable cylindrically fed holographic antenna
  • Dynamic polarization and coupling control for a steerable cylindrically fed holographic antenna

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Embodiment Construction

[0033] Embodiments of the invention include antenna design architectures that feed the antenna from a central point with an excitation (feed wave) that spreads out from the feed point in a cylindrical or concentric fashion. The antenna works with a feed wave by arranging multiple cylindrical feed sub-aperture antennas (eg patch antennas). In an alternative embodiment, the antenna is fed in from the perimeter rather than from the center out. This can help because it counteracts the amplitude excitation decay caused by the energy scattered by the aperture. Scattering occurs similarly in both orientations, but the natural cone caused by focusing the energy in the feed wave as the feed wave travels inward from the periphery counteracts the regressive cone caused by intentional scattering.

[0034] Embodiments of the invention include holographic antennas based on doubling the density typically required to achieve holography and filling holes with two types of orthogonal sets of e...

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Abstract

An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.

Description

[0001] priority [0002] This patent application claims a corresponding Provisional Patent Application Serial No. 61 / 941,801, filed February 19, 2014, entitled "Polarization and Coupling Control from a Cylindrically Fed Holographic Antenna" and priority of corresponding Provisional Patent Application Serial No. 62 / 012,897, filed June 16, 2014, entitled "A Metamaterial Antenna System for Communications Satellite Earth Stations" and incorporated by reference. technical field [0003] Embodiments of the present invention relate to the field of antennas; more particularly, embodiments of the present invention relate to a cylinder-fed antenna. Background technique [0004] Thinkom's products use a PCB-based approach to achieve dual circular polarization in the Ka-band, usually utilizing the Variable Tilt Transverse Stub or "VICTS" approach, which has two types of mechanical rotation. The first type rotates one array relative to the other, and the second type rotates both arrays...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q13/10
CPCH01Q21/0012H01Q21/20H01Q3/28H01Q9/0442H01Q21/065H01Q9/0457H01Q21/24H01Q21/0031
Inventor 亚当·比利纳桑·昆兹米卡拉·约翰逊
Owner KYMETA
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