FBAR-Based Radio Frequency Bandpass Filter for 3G TD-SCDMA

• 作 者: Mingke Qi Liangzhen Du Hao Zhang
• 机 构: College of Precision Instrument and Opto-electronic Engineering,Tianjin University,
• 出 处: ZTE Communications
• 发表日期: 2013年01期
• 关键词: FBAR filter TD-SCDMA 3G

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.

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 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.