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Volume 4 Issue 11
eISSN: 2349-5162

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Analyzing the impedance of reflection coefficient of S-parameters S11 and S22 using vector network analyzer & recognization of hand gesture using DTW

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VNA is commonly used to analyze the network in frequency series and data record by incident and reflection of the small antenna which distributed parallel, the main propose of this research to classify gesture movement based on the reflection coefficient variations of a small antenna. The near field is distributed the hand gesture movement results in unique variations of antenna’s i/p –o/p impedance which can be used to recognizing the gesture. .The two parallel antenna operating at 890 MHz -2.4GHz which is implemented in this research work and VNA is also compatible with this frequency 2.4GHz to collect data in form of S-parameters. First, some movement of hand like boxing, hopping, rowing, and many more gestures are performed and recorded, by measuring S11 and S22 through the antenna. To classify the hand movement based on S11 and S22 variation with the time series, for this dynamic time warping is used. By DTW we find the nearest optimal path of gestures in time series and found the average classification with more accuracies. In this research, we calculate the best impedance matching between the gestures.

Key Words

time warping (DTW) , Vector Network Analysis (VNA), i/p-o/p impedance, gesture movement, optimal path.

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"Analyzing the impedance of reflection coefficient of S-parameters S11 and S22 using vector network analyzer & recognization of hand gesture using DTW ", International Journal of Emerging Technologies and Innovative Research ( | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 11, page no. pp61-65, November-2017, Available at : &

Publication Details

Published Paper ID: JETIR1711013
Registration ID: 170844
Published In: Volume 4 | Issue 11 | Year November-2017
DOI (Digital Object Identifier):
Page No: 61-65
ISSN Number: 2349-5162

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(Volume 5 | Issue 1 | January 2018 |Impact factor 5.87)

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