Subsurface radio
First Claim
1. A subsurface radio comprising:
- a radio transceiver including a transmitter configured to transmit a voice data through a subsurface environment, and a receiver configured to receive the voice data through the subsurface environment;
a subwavelength antenna coupled to the radio transceiver and configured to radiate an electromagnetic (EM) wave modulating the voice data, the subwavelength antenna having a radiating length less than a transceiver wavelength of the radio transceiver operating in free-space at a maximum of a transceiver frequency, wherein the transceiver frequency is one of a transmit frequency of the transmitter and a receive frequency of the receiver;
a slave radio transceiver configured to transmit and the radio transceiver configured to receive, for each of a plurality of transceiver frequencies, a respective SNR and a respective signal strength;
a control unit configured to change the transceiver frequency to an optimal transceiver frequency in response to a change to the subsurface environment; and
an impedance matching circuit configured to match a first impedance of the 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.
1 Assignment
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Accused Products
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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Citations
20 Claims
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1. A subsurface radio comprising:
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a radio transceiver including a transmitter configured to transmit a voice data through a subsurface environment, and a receiver configured to receive the voice data through the subsurface environment; a subwavelength antenna coupled to the radio transceiver and configured to radiate an electromagnetic (EM) wave modulating the voice data, the subwavelength antenna having a radiating length less than a transceiver wavelength of the radio transceiver operating in free-space at a maximum of a transceiver frequency, wherein the transceiver frequency is one of a transmit frequency of the transmitter and a receive frequency of the receiver; a slave radio transceiver configured to transmit and the radio transceiver configured to receive, for each of a plurality of transceiver frequencies, a respective SNR and a respective signal strength; a control unit configured to change the transceiver frequency to an optimal transceiver frequency in response to a change to the subsurface environment; and an impedance matching circuit configured to match a first impedance of the 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for subsurface radio communication comprising:
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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; transmitting by a slave radio transceiver and receiving by the radio transceiver, for each of a plurality of transceiver frequencies, a respective SNR and a respective signal strength; 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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for subsurface radio communication comprising:
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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.
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Specification