Subsurface radio
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United States of America Patent
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May 7, 2019
Grant Date -
May 3, 2018
app pub date -
Oct 28, 2016
filing date -
Oct 28, 2016
priority date (Note) -
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Abstract
A method for subsurface radio communication includes transmitting voice data through a subsurface environment, by a transmitter of a radio transceiver. The voice data is received through the subsurface environment, by a receiver of the radio transceiver. A transceiver frequency of the radio transceiver is changed to an optimal transceiver frequency in response to a change to the subsurface environment. The transceiver frequency is one of a transmit frequency of the transmitter and a receive frequency of the receiver. A first impedance of a subwavelength antenna is matched to a second impedance of the transceiver in response to a difference between the first impedance and the second impedance exceeding an impedance mismatch value. The subwavelength antenna has a radiating length less than a transceiver wavelength of the radio transceiver operating in free-space at a maximum of the transceiver frequency.
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