In-Band Frequency-Tunable Ceramic Planar Inverted-F Antenna (PIFA) Utilizing an Integrated BST-Based Variable Capacitor

The dielectric properties of low-sintering-temperature (LTCC) Barium Strontium Titanate (BST) thick film paste at high frequencies (0.8-5 GHz) are briefly presented. The utility of the BST paste was demonstrated by tuning the resonance frequency of a ceramic PIFA for mobile terminals operating at 2...

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Bibliographic Details
Published in:Ferroelectrics 2009-01, Vol.388 (1), p.10-16
Main Authors: Palukuru, V. K., Peräntie, J., Komulainen, M., Tick, T., Jäntti, J., Jantunen, H.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Electronics
Exact sciences and technology
Ferroelectric material
integrated variable capacitor
Materials
Radiocommunications
reconfigurable planar inverted-F antenna
Telecommunications
Telecommunications and information theory
thick films
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Summary:The dielectric properties of low-sintering-temperature (LTCC) Barium Strontium Titanate (BST) thick film paste at high frequencies (0.8-5 GHz) are briefly presented. The utility of the BST paste was demonstrated by tuning the resonance frequency of a ceramic PIFA for mobile terminals operating at 2 GHz. The frequency tuning achieved can be used to compensate frequency detuning caused by the proximity of the user to the antenna. The impact of tuning on the antenna's total efficiency and radiation pattern was experimentally studied through a comparison with the performance of a reference antenna not incorporating the varactor.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150190902963666