PLANAR BROADBAND TRAVELING-WAVE BEAM-SCAN ARRAY ANTENNAS
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United States of America Patent
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Sep 11, 2012
Grant Date -
Oct 4, 2012
app pub date -
Jul 31, 2007
filing date -
Jul 31, 2007
priority date (Note) -
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Abstract
A planar broadband beam-steering phased array antenna with approximately 10:1 bandwidth is comprised of planar broadband traveling wave antenna elements positioned parallel to a conducting ground plane and spaced less than 0.5 wavelength at the highest operating frequency and more than 0.01 wavelengths at the lowest operating frequency. Each planar traveling wave antenna element is a planar frequency-independent antenna or planar self-complementary antenna, and is truncated to fit a unit cell of the phased array. Adjacent antenna elements are arranged to be tightly coupled together or connected with each other and spaced less than 0.5 wavelength apart between their centers throughout its operating frequency range. One or more layers of dielectric or magneto-dielectric substrates/superstrates can be added to enhance specific performances.
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