Phased array antenna for radio frequency identification
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United States of America Patent
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-
Oct 3, 2000
Issued Date -
N/A
app pub date -
Jul 23, 1997
filing date -
Oct 13, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multi-element, H plane, phase, dipole array antenna has a high gain over a wide angle in azimuth and over a controlled sector in elevation. Two printed wiring boards feed and physically support the dipole antenna elements. The phase and spacing of the dipole elements establish the radiation elevation angle, and a planar metallic reflector, spaced on the order of a half wavelength of the RF signal from the dipole array, interacts with the dipole-element pattern, to provide the wide angle azimuth gain.
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