My watch list
my.chemeurope.com  
Login  

Sensors, Vol. 18, Pages 2103: An Antenna Proximity Sensor for Mobile Terminals Using Reflection Coefficient

Sensors, Vol. 18, Pages 2103: An Antenna Proximity Sensor for Mobile Terminals Using Reflection Coefficient

Sensors doi: 10.3390/s18072103

Authors: Wonsub Lim Dongil Yang Youngoo Yang

This paper presents a new antenna proximity sensor for mobile terminals based on the measured reflection coefficient using a bidirectional coupler which is positioned between the main antenna and the front-end module. Using the coupled forward and reverse long-term evolution signals by the bidirectional coupler, the reflection coefficient looking into the antenna was calculated in the base-band processor. The measured reflection coefficients showed clear differences for both the types of objects, and the distances between the terminal and the objects. The proposed antenna proximity sensor showed a recognition distance that was approximately 5 mm longer than that of a conventional capacitive proximity sensor.

Authors:   Lim, Wonsub ; Yang, Dongil ; Yang, Youngoo
Journal:   Sensors
Volume:   18
edition:   7
Year:   2018
Pages:   2103
DOI:   10.3390/s18072103
Publication date:   30-Jun-2018
Facts, background information, dossiers
More about Molecular Diversity Preservation International
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE