Low-profile lens antenna
First Claim
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1. A low-profile lens antenna for providing a radiation pattern above an upper surface of a substrate, said antenna comprising:
- a feed; and
a lens, wherein at least a portion of said lens is located in a recess below a surface of said substrate, wherein the lens is shaped to produce a radiation pattern that shows a general increase in power from 0°
to 90°
from the central axis of the antenna when illuminated with radiation from the feed.
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Abstract
This invention relates to a low-profile lens antenna. In particular, this invention relates to a low-profile lens antenna for use in a depression in a surface, e.g. a concavity in the ground. A low-profile lens antenna is provided that comprises a feed and a lens, wherein the lens is shaped to produce a radiation pattern that shows a general increase in power from 0° to 90° from the central axis of the antenna when illuminated with radiation from the feed.
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Citations
21 Claims
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1. A low-profile lens antenna for providing a radiation pattern above an upper surface of a substrate, said antenna comprising:
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a feed; and a lens, wherein at least a portion of said lens is located in a recess below a surface of said substrate, wherein the lens is shaped to produce a radiation pattern that shows a general increase in power from 0°
to 90°
from the central axis of the antenna when illuminated with radiation from the feed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21)
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19. A low-profile lens antenna comprising:
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a feed; and a lens, wherein the lens is shaped to produce a sec2θ
radiation pattern that shows a general increase in power from 0°
to 90°
from the central axis of the antenna when illuminated with radiation from the feed.
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20. A low-profile lens antenna comprising:
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a feed; and a lens comprising at least one blooming layer, wherein the lens is shaped to produce a radiation pattern that shows a general increase in power from 0°
to 90°
from the central axis of the antenna when illuminated with radiation from the feed, wherein the relative permittivity of the lens is substantially 1.5 and the relative permittivity of the at least one blooming layer is substantially 1.25.
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Specification