Subsurface Radio

A method for subsurface radio communication comprising:

• transmitting a voice data through a subsurface environment, by a transmitter of a radio transceiver;
• receiving the voice data through the subsurface environment, by a receiver of the radio transceiver;
• changing a transceiver frequency of the radio transceiver to an optimal transceiver frequency in response to a change to the subsurface environment, wherein the transceiver frequency is one of a transmit frequency of the transmitter and a receive frequency of the receiver;
• and
• matching a first impedance of a subwavelength antenna 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 having a radiating length less than a transceiver wavelength of the radio transceiver operating in free-space at a maximum of the transceiver frequency.

A method for subsurface radio communication comprising:

• transmitting a data through a subsurface environment, by a transmitter of a radio transceiver;
• receiving the data through the subsurface environment, by a receiver of the radio transceiver;
• changing a transceiver frequency of the radio transceiver to an optimal transceiver frequency in response to a change to the subsurface environment, wherein the transceiver frequency is one of a transmit frequency of the transmitter and a receive frequency of the receiver, the optimal transceiver frequency determined from a maximum signal to noise ratio (SNR) measured from a transmission between the radio transceiver and a slave radio transceiver;
• and
• matching a first impedance of a subwavelength antenna 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 having a radiating length less than a wavelength of a transceiver wavelength of the radio transceiver operating in free-space at a maximum of the transceiver frequency.