A compact LTCC Bluetooth system module with an integrated antenna
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AbstractIn this article, a system-on-package (SoP) approach for Bluetooth system module applications using low-temperature co-fired ceramic (LTCC) technology is presented. The developed LTCC integrated substrate for our Bluetooth module application is overall 12 x 12 x 1 mm(3) in size, with integration of two originally proposed components, a balanced-to-unbalanced bandpass filter and a folded meander-line inverted-F antenna, as well as other passive circuitries. The embedded balanced-to-unbalanced filter, which is derived from the basic center-tapped transformer circuit, works simultaneously as a balun and a bandpass filter, thus leading to a significant amount of size reduction for the overall module. Likewise, comparing to the usual quarter-wavelength inverted-F antennas, our proposed antenna is only one-tenth of a wavelength in length-but no sacrificing of antenna efficiency. Consequently, couplings among different functional blocks of this highly integrated module are crucial to its performance and the resulting effects are discussed. A fully functional prototype is successfully fabricated and tested, demonstrating a promising solution for Bluetooth applications. (C) 2006 Wiley Periodicals. Inc.
All Author(s) ListYeung LK, Wang J, Huang Y, Lee SC, Wu KL
Journal nameInternational Journal of RF and Microwave Computer-Aided Engineering
Volume Number16
Issue Number3
Pages238 - 244
LanguagesEnglish-United Kingdom
Keywordsantennae; balun; Bluetooth; filter; LTCC; system-on-package
Web of Science Subject CategoriesComputer Science; Computer Science, Interdisciplinary Applications; COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS; Engineering; Engineering, Electrical & Electronic; ENGINEERING, ELECTRICAL & ELECTRONIC

Last updated on 2020-25-11 at 00:36