Frequency Dependency Analysis of SHF band Directional Propagation Channel in Indoor Environment

2018 ◽  
Author(s):  
K. Saito ◽  
P. Hanpinitsak ◽  
J.-I. Takada ◽  
Wei Fan ◽  
G.F. Pedersen
Keyword(s):  
Indoor Environment ◽  
Propagation Channel ◽  
Dependency Analysis ◽  
Frequency Dependency

scholarly journals Frequency dependency analysis for differential capacitive sensor

2019 ◽  
Vol 8 (3) ◽  
pp. 789-797
Author(s):  
Nurul Arfah Che Mustapha ◽  
A. H. M. Zahirul Alam ◽  
Sheroz Khan ◽  
Amelia Wong Azman
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Excitation Frequency ◽  
Capacitive Sensor ◽  
Circuit Theory ◽  
Capacitive Sensing ◽  
Dependency Analysis ◽  
Frequency Dependency ◽  
Simulation Results ◽  
Single Power

A differential capacitive sensing technique is discussed in this paper. The differential capacitive sensing circuit is making use of a single power supply. The design focus for this paper is on the excitation frequency dependency analysis to the circuit. Theory of the differential capacitive sensor under test is discussed and derivation is elaborated. Simulation results are shown and discussed. Next, results improvement has also been shown in this paper for comparison. Test was carried out using frequency from 40 kHz up to 400 kHz. Results have shown output voltage of Vout=0.07927 Cx+1.25205 and good linearity of R-squared value 0.99957 at 200 kHz. Potential application for this capacitive sensor is to be used for energy harvesting for its potential power supply.

Direction Giving and Wayfinding in an Indoor Environment

2014 ◽  
Author(s):  
Robert J. Wolter ◽  
Kassandra Hauptmann ◽  
Alycia Hund
Keyword(s):  
Indoor Environment

Analysis of Image based Indoor Positioning Results in Complex Indoor Environment

2017 ◽  
Author(s):  
Juil Jeon ◽  
Juyoung Kim ◽  
Myoungin Ji ◽  
Youngsu Cho ◽  
Andrea Lingua ◽  
...  
Keyword(s):  
Indoor Environment ◽  
Indoor Positioning
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