PRESSURE SENSING METHODS
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United States of America Patent
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Issued Date -
Dec 17, 2020
app pub date -
Jun 17, 2019
filing date -
Jun 17, 2019
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Abstract
A pressure sensing method includes providing a first receive antenna array that receives a first signal at a first frequency, providing a second receive antenna array that receives a second signal at a second frequency that differs from the first frequency, coupling a diode to the first receive antenna array and the second receive antenna array, coupling a transmit antenna array to the diode, receiving, by the diode, the first signal at the first frequency and the second signal at the second frequency, outputting, by the diode, a third signal at a third frequency that is a difference between the first frequency and the second frequency, receiving, by the transmit antenna array from the diode, the third signal at the third frequency, and outputting, by the transmit antenna array, the third signal at the third frequency.
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