Methods and apparatus for wireless power delivery and remote sensing using self-capacitances

1. A self-capacitance based remote power delivery device comprising:

a modulating power source electrically coupled to a grounded substrate, the modulating power source configured to be capacitively coupled to a self-capacitive body;

an energy harvesting device coupled to the grounded substrate, the energy harvesting device configured to be capacitively coupled to the self-capacitive body; and

the substrate, wherein the substrate is configured to be capacitively coupled to a portion of the self-capacitive body in direct contact with the substrate.

2. A self-capacitance based method of remotely delivering power, the method comprising:

coupling a modulating power source and an energy harvesting device to a grounded substrate;

capacitively coupling the modulating power source and the energy harvesting device to a self-capacitive body;

capacitively coupling the grounded substrate to a portion of the self-capacitive body in contact with the grounded substrate; and

operating the modulating power source at an operating frequency to deliver power to the energy harvesting device via the self-capacitive body.

3. A self-capacitance based biotelemetry system comprising:

a grounded substrate comprising an insulating layer and a conductive layer, wherein the conductive layer is coupled to a power source, and the grounded substrate is configured to be capacitively coupled to a portion of a self-capacitive body in contact with the grounded substrate;

a transmitter antenna;

a receiver antenna; and

a biotelemetry interface device capacitively coupled to the self-capacitive body, the biotelemetry interface device comprising:

a low-power oscillator;

a radio frequency antenna;

a resistor;

a rectifying diode bridge; and

a floating electrode coupled to a reference terminal.