Phased array antenna
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United States of America Patent
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Oct 15, 2019
Grant Date -
Aug 1, 2019
app pub date -
Jun 7, 2018
filing date -
Jun 9, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A phased array antenna includes a signal source, a distribution circuit, phase shifters, amplifiers, antenna elements, and a control device. The signal source generates a signal. The distribution circuit divides the signal generated by the signal source. The phase shifters shift phases of signals divided by the distribution circuit to change an orientation direction in which electromagnetic wave is emitted. The amplifiers amplify signals output by the phase shifters. The antenna elements emit, as the electromagnetic wave, signals output by the amplifiers. The control device controls the amplifiers such that, in a plane that is parallel to an orbital plane of a satellite with which communication of the electromagnetic wave is established, amplitudes of amplifiers, among the amplifiers, which are arranged in the center of the plane are greater than amplitudes of amplifiers, among the amplifiers, arranged at the periphery.
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