Abstract
AbstractIn this article, compact quintplexer modules with a passive triplexer circuit were newly designed, implemented, compared for US‐CDMA handset applications.The proposed passive triplexer circuit was comprised of a single diplexer, parallel resonant circuit, bandpass filter for GPS, and its impedance matching circuit. Although the number of passive components to comprise the proposed triplexer and its size were dramatically reduced, its performance characteristics were much better than the previously reported modules. Moreover, for realization of compact quintplexer module with small size and volume, FBAR filter bare chips and system in package technology were utilized instead of an US‐PCS packaged duplexer. Its excellent performances were good enough to directly apply for currently used handsets. Simulated and measured performance characteristics of fabricated triplexer and quintplexer module were well agreed. The fabricated quintplexer module had a 7.0 × 5.0 × 1.4 mm3 volume. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 540–543, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24959
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