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FBAR-Based Radio Frequency Bandpass Filter for 3G TD-SCDMA
Mingke Qi, Liangzhen Du, and Hao Zhang
ZTE Communications    2013, 11 (1): 51-53.  
Abstract68)      PDF (428KB)(59)       Save
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.
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