Ultra wide-band radar antenna for concrete penetration
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United States of America Patent
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Jun 17, 1997
Grant Date -
N/A
app pub date -
Aug 11, 1995
filing date -
Aug 11, 1995
priority date (Note) -
Expired
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Abstract
A pyramidal horn antenna that decreases ringing in radar systems that are placed against a solid volume of e.g. concrete or wood for finding an object in or behind the solid volume. The antenna includes a solid, pyramid-shaped dielectric, the pyramid shape including a rectangular base and four triangular sides that extend from the base to meet at the apex of the pyramid. Two conductive triangular plates overlay opposite ones of the four sides of the pyramid, each of the plates including an electrical connection for coupling the plate to a radar system. The pyramid-shaped dielectric has a dielectric constant that approximates the dielectric constant of the solid volume, and therefore provides an impedance match between the antenna and the solid volume.
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