Informatics Publishing Limited

S. Sinthuja ¹

Affiliations
1 Department of Tejas research Centre of excellence, AMET University, Kanathur, Chennai-603112, IN

Abstract

Level shifter is inserted between two modules when low voltage drives high voltage modules. Multi supply voltage is used to reduce the static and dynamic power consumption. Multi supply voltage domain technique consists of portioning the design into separate voltage domain. So the time critical domain runs at higher power supply voltage where non-critical domain is runs at lower power supply voltage. The conventional differential cascade voltage switch is the level shifter circuit. The conventional multi threshold CMOS (MTCMOS) greatly reduces the leakage power. But it does wide voltage conversion range is not achieved in level shifter design. So we use a multiple level shifter instead of single level shifter with multi threshold CMOS device. The multiple level shifter design can be achieved the conversion voltage range of 1V to 1.8V. The inter mediate power supply voltage of level shifter contains 400mV,600mV.800mV ranges of operation. It can be designed by using cadence 180nm technology. The synthesis results can be achieved in 310^W power supply.

Keywords

Differential Voltage Cascade Switch, Multi Threshold CMOS, Multiple Level Shifter, Wide Voltage Conversion Range

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K. Bavitra ¹, S. Sinthuja ², N. Manoharan ³, S. Rajesh ⁴

Affiliations
1 EEE, AMET University, Kanathur, Chennai, 603112, IN
2 TEJAS Research Centre of Excellence, AMET University, Chennai, 603112, IN
3 AMET University, Chennai, 603112, IN
4 Department of ECE, Bharath University, Chennai, IN

Abstract

The recent trend in photovoltaic inverter is to use topologies with the absence of transformers to acquire higher efficiency. This gives very low ground leakage current. After the elimination of transformer in a grid/Load connected Photovoltaic (PV) system, a galvanic connection exists between the grid/Load and the PV array. The different inverter topology that generates no varying common-mode voltage is proposed to avoid leakage currents, this proposes a new topology with six switches and two diodes that generates no varying common-mode voltage and exhibits high efficiency

Keywords

Ground Leakage Current, H-Bridge, Photovoltaic Inverter, Transformer Less Topology

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S. Mariappan ¹, G. Sasibhusana Rao ¹, Swarna Ravindrababu ², S. Sinthuja ³, S. Rajesh ⁴

Affiliations
1 Department of Electronics and Communication, AU College of Engineering, Visakhapatnam - 530003, Andhra Pradesh, IN
2 Samsung India, Bangalore – 560037, Karnataka, IN
3 Department of Tejas Research Centre of Excellence, AMET University, Chennai - 603112, Tamil Nadu, IN
4 Department of Electronics and Communication Engineering, Bharath University, Chennai - 600020, Tamil Nadu, IN

Abstract

The acquisition of GNSS signal is the most challenging part of any GNSS receiver. With the modernized GNSS system having longer code length and wider bandwidth, the size of the data block becomes large. To reduce the computational load of the processor, the reduction in the size of the data block without compromise in the acquisition loop performance provides overall improvement to the system. Here, a model is developed for acquisition of GPS signal L1 and L2C by compressing the input raw GPS signal with sequences of perfect periodic autocorrelation properties such as the Ipatov sequence. A compression matrix of the required dimension is constructed for compressing the input GPS signal. The improvement in the acquisition performance of the model is discussed.

Keywords

Acquisition, Compression, GPS, L2C, Modernised GPS

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