ANTENNA ARRAY WITH SQUARE WAVE SIGNAL STEERING
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United States of America
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Issued Date -
Feb 6, 2020
app pub date -
Aug 2, 2019
filing date -
Aug 2, 2019
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Abstract
An antenna array is steered electronically by controlling the transmission speed of the RF signal in feed line of each radiator in the array. The transmission speed is controlled using phase shifters, that include variable dielectric constant (VDC) material causing the change in transmission speed. The control signal applied to the VDC material generates the required phase shift. The control signal is calculated for each phase shifter in real time for each control cycle, so as to enable the main beam to track a target, such as a satellite. The control signal is a square wave signal, and each control signal has a specifically calculated duty cycle or frequency to generate the required phase shift.
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