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Energy scavenging has become an increasingly popular option for powering electronic devices as a long lasting power sources. A MEMS piezoelectric based energy scavenging system consists of a MEMS piezoelectric generator, a voltage multiplication circuit and an energy storage unit. Supercapacitor has the potential to be an excellent power storage material for renewable energy sources. The interdigital...
The continuous reduction of feature size and increase in chip density have made power becomes an important design parameter in today's deep submicron digital designs. Conversely, design engineers perform power estimation and optimization at every design stage to improve the performance and productivity of the design. During most synthesis process, synthesis tools prefer to use larger gates in the...
This paper presents the feasibility challenges of designing dc-dc buck and boost converter in nano-scale. With the gradual development of VLSI design platforms, new issues have been introduced and presented to the power electronics circuit experts and VLSI engineers. Today's VLSI industry has reached the technology well within the nano-meter range. The consequence of implementing the basic power electronics...
The aim of this paper is design of interface circuit while it is applied in capacitive sensor applications. In this paper, the circuits were designed in 0.18-μm Silterra CMOS technology and simulated in Mentor Graphic DA-IC. The proposed capacitive sensor includes two major building blocks: a wide-swing current mirror with enhanced output impedance which is usually used in wide-signal-swing op-amps,...
Operational amplifier (Op amp) is the most integral part of an embedded circuit building block. In this paper, the testing of an integrated Op amp suitable use for capacitance and high speed measuring system has been made. The Op amp testing (such as large signal differential transfer characteristic, frequency respond analysis, input common mode analysis, slew rate analysis) has been done using the...
Capacitive biosensor has been motivating subject to study for its zillion contributions in biomolecule detection. For this project, we present a novelty device provide highly sensitive detection using real time measurement. The fabrication of device involves only conventional lithographic process and simple dry oxidation process. By using the nanoscale dielectric spectroscopy between nanogap patterns,...
The design and simulation of an MEMS-based capacitive bending strain sensor using silicone dope as a plate is presented in this paper. The objective is to design and simulate the performance of a strain sensor using a dielectric material between capacitive plates. The silicone dioxide (SiO2) and polydimethylsiloxane (PDMS) was utilized as the dielectric layer in this model. Several dimensions of the...
This paper presents a new electrical model for RF-MEMS capacitive switch which is implemented on semi-suspended coplanar-waveguide. The model has been extracted from two previous works and it was able to describe the switch and take the effect of substrate into consideration with acceptable approximation. Regarding to the two similar structures of capacitive switches, a new formula for quality factor...
This paper discussed about design and characterization of the Inter Digital capacitor. The main objective is to study the effects of width and spacing of the capacitor electrode on capacitance value. Water levels sensors are studied by using Inter Digital Capacitor (IDC) technique on Printed Circuit Board (PCB). IDC technique is used to make the capacitance measurement of the solution became more...
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