Complex Impedance Measurement with a Network Analyser by Down-Conversion using Unstabilized W-Band-Impatt-Sources

2006 ◽  
Author(s):  
Th. Hartmann ◽  
W. Hetzner ◽  
J. Detlefsen
Keyword(s):  
Complex Impedance ◽  
Impedance Measurement ◽  
W Band ◽  
Network Analyser ◽  
Down Conversion ◽  
Complex Impedance Measurement

ONE DIMENSIONAL NATURE OF IONIC CONDUCTIVITY IN SELF-FLUX GROWN RbTiOPO4 SINGLE CRYSTALS

2003 ◽  
Vol 17 (03) ◽  
pp. 373-382 ◽  
Author(s):  
C. V. KANNAN ◽  
S. GANESAMOORTHY ◽  
C. SUBRAMANIAN ◽  
P. RAMASAMY
Keyword(s):  
Ionic Conductivity ◽  
Ionic Conduction ◽  
Complex Impedance ◽  
Impedance Measurement ◽  
Dielectric Polarization ◽  
One Dimensional ◽  
Measured Activation Energy ◽  
Conduction Behavior ◽  
Measured Activation ◽  
Complex Impedance Measurement

The ionic conductivity of self-flux grown RbTiOPO 4 single crystal along the crystallographic a, b and c (polar) axes in the frequency range 100 Hz–10 MHz and in the temperature range 300–1140 K has been studied. The measured activation energy indicates the existence of super ionic conduction behavior in RTP crystals and also reveals that the DC electrical conduction and dielectric polarization are governed by the same mechanism. Complex impedance measurement shows the existence of non-Debye type of relaxation in the crystals.

Complex Impedance Measurement System for the Frequency Range from 5 kHz to 100 kHz

2015 ◽  
Vol 644 ◽  
pp. 133-136 ◽  
Author(s):  
Mitar Simić
Keyword(s):  
Measurement System ◽  
Integrated Circuit ◽  
Complex Impedance ◽  
Impedance Measurement ◽  
Wide Range ◽  
Measurement Results ◽  
Improved Design ◽  
Sd Card ◽  
Complex Impedance Measurement ◽  
Line Analysis

The improved design of previously developed complex impedance measurement system is described. Realized system for measurement of complex impedance is based on integrated circuit AD5933 which is controlled by microcontroller ATmega128. Device has full standalone capabilities with LCD for displaying of results and keyboard for configuration on the field. Created report with measured values of impedance magnitude and phase angle is stored on micro SD card in format compatible with MS Excel which ensures easy off-line analysis on PC. Realized device is equipped with self-calibration system which ensures high accuracy in wide range of impedance and frequency. In the aim of the verification of developed system, the measurement results are plotted and compared with theoretical impedance values. Realized system can be used for complex impedance measurement, impedance spectrometry, biomedical and automotive sensors, proximity sensors, FFT processing, structural health monitoring, etc.

Complex Impedance Measurement Applied to Short-Time Contact Between Colliding Steel Surfaces

2015 ◽  
Vol 57 (3) ◽  
Author(s):  
Takahiro Nihira ◽  
Kazuyoshi Manabe ◽  
Chiharu Tadokoro ◽  
Shingo Ozaki ◽  
Ken Nakano
Keyword(s):  
Complex Impedance ◽  
Impedance Measurement ◽  
Steel Surfaces ◽  
Short Time ◽  
Complex Impedance Measurement
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