Antenna tuning for mobile devices: The state of the art and some glimpses of the future

This presentation introduces a self-contained adaptive antenna tuner for use in mobile phone applications. It allows efficient operation over a wide frequency range with high Q antennas (i.e., antennas for which the impedance changes significantly with frequency). It also adaptively mitigates of the...

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Bibliographic Details
Main Authors: Boyle, K. R., Spits, E., de Jongh, M. A., Sato, S., Bakker, T., van Bezooijen, A.
Format: Conference Proceeding
Language:English
Subjects:
adaptive
Adaptive arrays
antenna
Antenna measurements
closed-loop
Impedance
mobile
Mobile antennas
Mobile handsets
phone
reconfigurable
tuner
Tuners
Online Access:Request full text
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Description
Summary:This presentation introduces a self-contained adaptive antenna tuner for use in mobile phone applications. It allows efficient operation over a wide frequency range with high Q antennas (i.e., antennas for which the impedance changes significantly with frequency). It also adaptively mitigates of the effects of user interaction by measuring the antenna performance and implementing a closed-loop control algorithm that improves the match between the antenna and the PA/LNA. This is achieved using an onboard microcontroller, such that only DC and synchronization inputs are required from the host device.
DOI:10.1109/LAPC.2012.6402943