A closed-loop controlled wireless power transmission circuit block for implantable biomedical applications is described in this paper. The circuit consists of one front-end rectifier, power management sub-block including bandgap reference and low drop-out regulators (LDOs) as well as transmission power detection / feedback circuits. Simulation result shows that the front-end rectifier achieves ...

An electrical equivalent circuit is derived for the electrospray process. It is a series circuit which consists of the power supply, the electrochemical contact to the solution, the solution resistance (R(s)), a constant-current regulator which represents the processes of charge separation and charge transport in the gap between the spray needle aperture and the counter electrode, and charge ne...

A high power supply rejection ratio (PSRR) bandgap voltage reference (BGR) which is used in the signal processing circuit of energy harvesters is presented in this paper. The PSRR of the BGR is improved by adding a pre-regulating circuit and a low pass filter. The pre-regulating circuit mainly improves the BGR PSRR at low frequency and the low pass filter mainly improves the BGR PSRR at high fr...

Design techniques for low-voltage analog TUters In CMOS technologies are discussed. The use of OTA-C implementation techniques towards low power supply voltages (3 V and below) requires special source degeneration and input signal folding techniques. Firstly, design techniques to achieve Pull CMOS continuous-time filters with low distortlon (Total harmonic distortion c -50 dB) and low power sup...

The design and application of level shifter circuit which is based on single power supply is presented in this paper different from conventional level shifter circuitry. A level shifter may be used to shift any voltage level to a desired level without any leakage current. To reduce the supply routing and layout congestion within the chip whenever level shifting is needed for different voltage i...

The study of the power dissipation sources of CMOS circuits is presented. Specifically, the main principles of dynamic, short-circuit, static, and leakage power dissipation are illustrated together with the low power strategies for reducing each power component. Furthermore, we enlighten to some innovative techniques of power reduction, which are based on multiple supply voltages and multiple t...

This paper presents the application of a modified fuzzy reasoning spiking neural P systems (MFRSN P system, for short) to fault diagnosis of metro traction power supply systems. In MFRSN P systems, three types of neurons are used to represent operation information of protection devices including protective relays and circuit breakers; a reasoning algorithm associated with MFRSN P systems is int...