Nonlinearity Measurements Using Alternating Current

The nonlinearity measurement technique described uses an adapted conventional lock-in-amplifier. This technique enables us to measure small nonlinearities over a wide frequency band and is more sensitive than the 1/f noise measurement used to detect non-homogeneous structures in conductors, resistors and semiconductor components. Results illustrating uses of this method are presented for different types of resistor and semiconductor structures.

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Wide frequency band electrochemical noise measurement and analysis of a Li/SOCl2 primary battery

Journal of Solid State Electrochemistry ◽

10.1007/s10008-018-4151-4 ◽

2018 ◽

Vol 23 (2) ◽

pp. 389-396 ◽

Cited By ~ 7

Author(s):

E. A. Astafev

Keyword(s):

Frequency Band ◽

Electrochemical Noise ◽

Noise Measurement ◽

Wide Frequency Band ◽

Primary Battery ◽

Measurement And Analysis

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New instrumentation for the comprehension of chemical reactions under microwave and classical heating with the aid of a wide frequency band dielectric spectroscopy

The European Physical Journal Applied Physics ◽

10.1051/epjap:2001186 ◽

2001 ◽

Vol 15 (3) ◽

pp. 223-229 ◽

Cited By ~ 3

Author(s):

S. Chevalier ◽

O. Meyer ◽

R. Weil ◽

A. Fourrier-Lamer ◽

A. Petit ◽

...

Keyword(s):

Chemical Reactions ◽

Frequency Band ◽

Dielectric Spectroscopy ◽

Wide Frequency Band ◽

New Instrumentation

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Investigation of optimal time-domain feature for non-surface defect detection through a pulsed alternating current field measurement technique

Measurement Science and Technology ◽

10.1088/1361-6501/aa9134 ◽

2017 ◽

Vol 29 (1) ◽

pp. 015601 ◽

Cited By ~ 4

Author(s):

Jiuhao Ge ◽

Wei Li ◽

Guoming Chen ◽

Xiaokang Yin ◽

Jian Liu ◽

...

Keyword(s):

Defect Detection ◽

Measurement Technique ◽

Time Domain ◽

Field Measurement ◽

Surface Defect ◽

Alternating Current ◽

Optimal Time ◽

Current Field ◽

Surface Defect Detection

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Noise measurement technique for document scanners

10.1117/12.236113 ◽

1996 ◽

Author(s):

Xiaofan Feng ◽

John T. Newell ◽

Roger Triplett

Keyword(s):

Measurement Technique ◽

Noise Measurement

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Physical Principles of a Piezo Accelerometer Sensitive to a Nearly Constant Signal

Sensors ◽

10.3390/s18103258 ◽

2018 ◽

Vol 18 (10) ◽

pp. 3258 ◽

Cited By ~ 2

Author(s):

Valery Gupalov ◽

Alexander Kukaev ◽

Sergey Shevchenko ◽

Egor Shalymov ◽

Vladimir Venediktov

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Frequency Band ◽

Linear Acceleration ◽

High Sensitivity ◽

Element Model ◽

Wide Frequency Band ◽

Piezoelectric Accelerometer ◽

The Finite Element Model ◽

Physical Principles

The paper considers the construction of a piezoelectric accelerometer capable of measuring constant linear acceleration. A number of designs are proposed that make it possible to achieve high sensitivity with small dimensions and a wide frequency band (from 10−5 Hz). The finite element model of the proposed design was investigated, and its output characteristic and scale factor (36 mV/g) were obtained.

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Flexible ultrathin metamaterial absorber for wide frequency band, based on conductive fibers

Science and Technology of Advanced Materials ◽

10.1080/14686996.2018.1527170 ◽

2018 ◽

Vol 19 (1) ◽

pp. 711-717 ◽

Cited By ~ 10

Author(s):

Young Ju Kim ◽

Ji Sub Hwang ◽

Bui Xuan Khuyen ◽

Bui Son Tung ◽

Ki Won Kim ◽

...

Keyword(s):

Frequency Band ◽

Metamaterial Absorber ◽

Wide Frequency Band ◽

Conductive Fibers

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Two models of the reflection coefficient modulus meter in a wide frequency band using microwave radiometry

Proceedings of Tomsk State University of Control Systems and Radioelectronics ◽

10.21293/1818-0442-2017-20-4-50-54 ◽

2017 ◽

Vol 20 (4) ◽

pp. 50-54

Author(s):

A.V. Filatov ◽

◽

N.Ju. Belov ◽

S.E. Tarasov ◽

N.A. Filatov ◽

...

Keyword(s):

Reflection Coefficient ◽

Frequency Band ◽

Microwave Radiometry ◽

Wide Frequency Band

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Performance Evaluation of Two Port and Four Port Measurement for Twisted Pair Cable

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v8i4.pp2624-2632 ◽

2018 ◽

Vol 8 (4) ◽

pp. 2624

Author(s):

Azhari Bin Asrokin ◽

Mohamad Kamal Bin A. Rahim

Keyword(s):

Performance Evaluation ◽

Frequency Band ◽

Measurement Technique ◽

Network Analyzer ◽

Differential Mode ◽

Twisted Pair ◽

The Core ◽

S Parameter ◽

Measurement Results ◽

S Parameters

A balance-unbalance (balun) transformer is commonly used to connect the balance 100 Ohm twisted pair cable to the unbalance 50 Ohm network analyzer ports, but due to the limitations of the core (i.e. ferrite) inside the balun, the balun can only effectively operates at a certain band of frequencies. This limitation can be eliminated by using a 4-port vector network analyzer (VNA) which is done by connecting the VNA’s ports to each conductor end. The extracted S-parameters will then be transformed to a 2-port S-parameters in differential mode at both ports. To validate the measurement technique, S-parameter measurement by using the 4-Port Network Analyzer without any balun will be compared to the measurement which used the 2-Port Network Analyzer with the balun transformers. Two twisted pair cable distances are selected as reference which are 500, and 1000 meters with nominal copper diameter of 0.5mm. Based on the measurement results, the 4-ports measurement shows good correlation with the 2-ports measurement especially at 500m distance. This shows that the 4-ports measurement setup is suitable to be used to measure twisted pair copper cable and possible to measure at a higher frequency band such as up to 500 MHz but at a shorter twisted pair cable distance.

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