. Author manuscript; available in PMC: 2010 Dec 20.

Published in final edited form as: IEEE Trans Circuits Syst II Express Briefs. 2010 Apr 1;57(4):260–264. doi: 10.1109/TCSII.2010.2043470

TABLE I.

System Specifications and Measured Results

Parameters	Measured Values

Transmitter coil (L₁)	Inductance = 0.4 μH
	Outer diameter = 2 cm
	Inner diameter = 1 cm
	Number of turns = 4 cm

Receiver coil (L₂)	Inductance = 0.48 μH
	Outer diameter = 1 cm
	Inner diameter = 0.6 cm
	Number of turns = 6 cm

Power transmission frequency	13.56 MHz

Back telemetry frequency	600 Hz

Power update frequency	300 Hz

Overall efficiency of the closed loop system (d = 1 cm)	6.9 %

Overall efficiency of the open loop system (d = 1 cm)	1.1 %