Silicon bulk micromachined FBAR filter and duplexer for advanced handset applications
✍ Scribed by Jae Yeong Park; Kyeong Hak Lee; Seong Jong Cheon
- Book ID
- 102521427
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 415 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
Silicon bulk micromachined FBAR filters and duplexer have been developed. The proposed filters are comprised of several resonators and the duplexer is made with two filters and a phase delay line. The fabricated FBAR filters have insertion losses (IL) of −1.46 and −1.86 dB, return losses of −13 and −10 dB, stop band rejection of −14 and −33 dB, central frequency of 1.88 and 1.96 GHz, and size of 1.3 mm × 1.5 mm, respectively. The fabricated FBAR duplexer has insertion loss (IL) of −3.5 dB (Max.) in pass band and absolute attenuation of −42 dB (Min.) at transmitter to antenna ports, while it has IL of −4.5 dB (Max.) in pass band and absolute attenuation of −52 dB (Min.) at antenna to receiver ports. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 339–342, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22133