Adaptive Impedance-Matching Techniques for Controlling L Networks

The link quality of mobile phones suffers from antenna mismatch due to fluctuating body effects. Techniques for adaptive control of impedance-matching L networks are presented, which provide automatic compensation of antenna mismatch. To secure reliable convergence, a cascade of two control loops is...

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Veröffentlicht in:	IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2010-02, Vol.57 (2), p.495-505
Hauptverfasser:	van Bezooijen, A., de Jongh, M.A., van Straten, F., Mahmoudi, R., van Roermund, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Adaptive arrays Adaptive control Adaptive filters Antennas Automatic control Convergence Detectors Feedback Impedance impedance matching Mobile antennas Mobile handsets power amplifiers Programmable control switched-capacitor filters
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