scholarly journals Low-Power Sensor Interface with a Switched Inductor Frequency Selective Envelope Detector

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2124
Author(s):  
Marko Gazivoda ◽  
Vedran Bilas
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Bandpass Filter ◽  
Design Parameters ◽  
Lower Sensitivity ◽  
Sensor Interface ◽  
Envelope Detector ◽  
Input Signals ◽  
Voltage Doubler

With the growing need to understand our surroundings and improved means of sensor manufacturing, the concept of Internet of Things (IoT) is becoming more interesting. To enable continuous monitoring and event detection by IoT, the development of low power sensors and interfaces is required. In this work we present a novel, switched inductor based acoustic sensor interface featuring a bandpass filter and envelope detector, perform a sensitivity, frequency selectivity, and power consumption analysis of the circuit, and present its design parameters and their qualitative influence on circuit characteristics. We develop a prototype and present experimental characterization of the interface and its operation with input signals up to 20 mV peak-to-peak, at low acoustic frequencies from 100 Hz to 1 kHz. The prototype achieves a sensitivity of approximately 2 mV/mV in the passband, a four times lower sensitivity in the stopband, and a power consumption of approximately 3.31 µW. We compare the prototype interface to an interface consisting of an active bandpass filter and a passive voltage doubler using a prerecorded speedboat signal.

An improved low-power-consumption heating stage for X-ray powder diffraction

1999 ◽  
Vol 32 (3) ◽  
pp. 543-545
Author(s):  
Giovanni Valdrè
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Powder Diffraction ◽  
Scattered Radiation ◽  
Structural Transformations ◽  
Low Power Consumption ◽  
X Ray ◽  
Gaseous Environment ◽  
Heating Stage

An improved low-power-consumption easy-to-operate simple heating stage for use in connection with an X-ray powder diffractometer is described and discussed. No modification is required to the conventional specimen chamber, which can be used safely up to a specimen temperature of at least 1200 K with a temperature accuracy of a few degrees. The stage is interchangeable with conventional specimen holders, without the need for realignment of the diffractometer. To prevent specimen oxidation, provisions are made for heating in an inert gaseous environment. Also, care has been taken to prevent scattered radiation escaping from the specimen chamber. The stage allows the study of structural transformations with temperature and so far it has been used successfully for the characterization of very different materials, such as hyaloclastite, smectites, montmorillonites and chlorocadmates with perovskite-like structures. Although the device has been designed for the Philips PW1820 X-ray diffractometer, it can be applied to other types of X-ray diffractometer.

Synthesis and characterization of Pd-doped α-Fe2O3 H2S sensor with low power consumption

2007 ◽  
Vol 140 (1-2) ◽  
pp. 98-102 ◽  
Author(s):  
Yan Wang ◽  
Fanhong Kong ◽  
Baolin Zhu ◽  
Shurong Wang ◽  
Shihua Wu ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Low Power Consumption ◽  
Synthesis And Characterization

SOI CMOS TRANSISTORS FOR RF AND MICROWAVE APPLICATIONS

2001 ◽  
Vol 11 (04) ◽  
pp. 1159-1248 ◽  
Author(s):  
D. FLANDRE ◽  
J.-P. RASKIN ◽  
D. VANHOENACKER-JANVIER
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Transmission Lines ◽  
High Frequency ◽  
Silicon On Insulator ◽  
Low Power Consumption ◽  
New Model ◽  
Microwave Applications ◽  
High Degree

The new communication markets are vey demanding: high frequency, high degree of integration, low power consumption. Silicon-on-Insulator offers many advantages and this paper illustrates the potentialities of this technology for RF and microwave applictions. After an overview of the SOI material, the properties of the SOI MOSFET's are analyzed and compared to bulk Si MOSFET's. The models of transmission lines and inductors on SOI are compared and further used in the on-wafer characterization of the transistors. Various models for the transistors are presented and their limitations are given. A new model is described, valid from DC to the microwave region. This model agrees very well with the measurements for various transistor dimensions. Finally, variuos RF and microware circuits are presented. Ths paper does not fully describe all the properties and applications of SOI but the numerous references offered to the reader help him to gather more informations.

Design and Electrical Characterization of 2-T Thyristor RAM With Low Power Consumption

2018 ◽  
Vol 39 (3) ◽  
pp. 355-358 ◽  
Author(s):  
Youngmin Kim ◽  
Min-Woo Kwon ◽  
Kyung-Chang Ryoo ◽  
Seongjae Cho ◽  
Byung-Gook Park
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Electrical Characterization ◽  
Low Power Consumption

Fabrication and characterization of a low power consumption ethanol gas sensor based on a suspended micro-hotplate

RSC Advances ◽  
2015 ◽  
Vol 5 (64) ◽  
pp. 51953-51960 ◽  
Author(s):  
Meihua Li ◽  
Weiping Yan ◽  
Huichao Zhu ◽  
Zhenya Guo ◽  
Zhenan Tang
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Gas Sensor ◽  
Low Power Consumption ◽  
Fabrication And Characterization

A low power consumption ethanol gas sensor based on a suspended micro-hotplate was fabricated using the droplet guiding deposition technique.

scholarly journals An Analog Voltage Similarity Circuit with a Bell-Shaped Power Consumption

Electronics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1141
Author(s):  
Mehdi Azadmehr ◽  
Luca Marchetti ◽  
Yngvar Berg
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Cmos Technology ◽  
Low Power Consumption ◽  
Total Current ◽  
Current Consumption ◽  
Input Signals ◽  
Measurement Results ◽  
Differential Pair ◽  
Analog Voltage

This paper presents a voltage similarity circuit (bump circuit) based on a novel voltage correlator. The proposed circuit is characterized by a power consumption which depends on the similarity between the two inputs. The sensitivity of the bump circuit and the power consumption are at the highest values when the inputs are equal. As the similarity between the input voltages decreases, the total current consumption decreases with a bell-shaped behavior. The proposed bump circuit is very simple in design, made of a new voltage correlator circuit in combination with a differential pair and mimics the behavior of the classical bump circuit. The voltage correlator was implemented using AMS−350nm CMOS technology. Simulation and measurement results suggests that a low power consumption may be achieved if the circuit is used in applications where the input signals have large dissimilarity for most of the circuit operation.

Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang
Keyword(s):  
Linear Programming ◽  
Power Consumption ◽  
Low Power ◽  
Optimization Design ◽  
Structural Parameters ◽  
Axial Position ◽  
Low Power Consumption ◽  
Optimal Method ◽  
Atomic Spin ◽  
Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

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