FBAR-Based Radio Frequency Bandpass Filter for 3G TD-SCDMA
Release Date：2013-03-27
Author：Mingke Qi, Liangzhen Du, and Hao Zhang
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[Abstract] In this paper, we describe a high-performance TD-SCDMA bandpass filter based on film bulk acoustic resonator (FBAR) technology. The filter comprises a group of FBARs connected in a ladder configuration. Excellent quality factor greater than 1000 has been achieved at resonant frequency near 2 GHz for the FBAR. The TD-SCDMA FBAR filter has been fabricated and tested. The filter has low passband insertion loss of 1.7 dB and high stop-band rejection greater than 35 dB.
[Keywords] FBAR; filter; TD-SCDMA; 3G
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