An EEG acquisition system using 0.18μm technology is proposed. EEG input signals are of the range of few micro-voltage. Hence a high gain operational transconductance amplifier with gain of 62.45dB is designed for the acquisition system. The proposed amplifier and multiplexer have been tested for the EEG signals and their performance is reported at operating voltage of 1.8 volts. This design ca...

In this paper, a high performance current-mode instrumentation amplifier has been proposed for low noise, low power, high CMRR and adjustable gain with an external resistor for various biomedical signal processing. The portable biomedical instrumentation has become an important part of diagnostic and treatment instrumentation, including telemedicine applications. The low voltage and low-power d...

A 1.227 GHz low power single-ended input, differential output low noise amplifier (balun LNA) for GPS is proposed. A two stage structure with current-reused technique is adopted to achieve low power, low noise factor and high voltage gain simultaneously. The LNA is fabricated in 0.18 mm CMOS process, consuming only 2 mA current from a 1.8 V supply. The LNA is measured to exhibit a differential ...

Received Jan 8, 2018 Revised Mar 23, 2018 Accepted Apr 11, 2018 Distributed energy source based electricity generation is an essential factor for the economic growth and development of a country. The photovoltaic, fuel cell and battery based power generation offer a high voltage gain. The DC-DC CUK converter based on both buck and boost mode of operation is proposed for high gain dc link voltag...

In this paper, a new family of single-stage high step-up boost voltage inverter based on transformer is proposed, called T-Z source inverters. By replacing two inductors in the classical Z-source inverter with two transformer, the proposed inverter produces a very high boost voltage gain when, the turn ratio of the transformer is larger than one. Compared to the trans-Z source inverter, the pro...

A new high step-up dc/dc converter is presented for renewable energy applications. The construction implementation of a dual inductor and more than one voltage multiplier cells, to obtain large step-up voltage gain, two capacitors has been placed charged during the switch-off period, energy accumulated in the dual inductor which increases the voltage gain. The MMF energy in the leakage inductan...

The main objective of this paper, a bidirectional dc–dc converter with duel coupled inductor is proposed. In the boost mode, two capacitors are parallel charged and series discharged by the coupled inductor. Thus, high step-up voltage gain can be achieved with an appropriate duty ratio. The voltage stress on the main switch is reduced by a passive clamp circuit. Therefore, the low resistance RD...

In this paper, a generalized buck-boost Z-H converter based on switched inductors is proposed. This structure consists of a set of series connected switched-inductor cells. The voltage conversion ratio of the proposed structure is adjusted by changing the number of cells and the duty cycle. Like the conventional Z-H converter, the shoot-through switching state and the diode before LC network ar...

This paper proposes a high gain and wide bandwidth amplifiers with numerical approach. It is improved that the low-frequency characteristics and the range of gain refers to direct-coupling. The gain is controlled with numerical approach,which makes the gain stability. It is easy to control the gain of the multistage amplifier with adopting uniform gain control voltage. It is useful for numerica...