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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2010-05-27
Capacitive Sensor Arrangement to Detect External Load on a Mobile Terminal Antenna
By
Arttu Huttunen,

    Mr. Arttu Huttunen

    University of Oulu

    Finland

    Homepage

Sami Myllymaki,

    Dr. Sami Myllymaki

    University of Oulu

    Finland

    Homepage

Mikko Komulainen,

    Dr. Mikko Komulainen

    Nokia Corporation

    Finland

    Homepage

Heli Jantunen

    Professor Heli Jantunen

    Microelectronics and Materials Physics Laboratories

    University of Oulu

    Finland

    Homepage

Progress In Electromagnetics Research Letters, Vol. 15, 13-18, 2010
doi:10.2528/PIERL10050404 | Google Scholar

Abstract
The feasibility of using a capacitive sensor to sense the proximity of an external load, especially a finger, to a mobile terminal antenna was experimentally studied using a PIFA-type antenna as one of the sensor's electrodes. It was found that with the proposed arrangement it is possible to detect objects with permittivity close to that of body tissue or the conductivity level of aluminium and the size of a human finger at distances up to 15 mm.
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Citation
Arttu Huttunen, Sami Myllymaki, Mikko Komulainen, and Heli Jantunen, "Capacitive Sensor Arrangement to Detect External Load on a Mobile Terminal Antenna," Progress In Electromagnetics Research Letters, Vol. 15, 13-18, 2010.
doi:10.2528/PIERL10050404
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