Capacitively coupled log periodic dipole antenna
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United States of America Patent
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Issued Date -
Sep 14, 2006
app pub date -
Jan 12, 2006
filing date -
Mar 8, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A log periodic dipole antenna in which some, or preferably all, of the mechanical attachments do not include metal-to-metal contact points. In particular, the antenna elements, which are cantilevered from a ground plate, are mechanically supported by and capacitively coupled to the ground plate with a dielectric adhesive material, such as a sufficiently sturdy dielectric tape. Other attachments to the antenna element, such an antenna feed circuit and a signal coupler, may also be assembled with the dielectric adhesive material. This type of construction capacitively couples the operative elements of the antenna and avoids passive intermodulation (PIM) interference and electromechanical corrosion that is often caused by metal-to-metal attachment points.
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