ZTE

ZTE Communications ›› 2013, Vol. 11 ›› Issue (1): 51-53.

• Research paper • Previous Articles     Next Articles

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

Mingke Qi, Liangzhen Du, and Hao Zhang   

  1. College of Precision Instrument and Opto-electronic Engineering, Tianjin University, Tianjin 300072, China
  • Received:2012-07-10 Online:2013-03-25 Published:2013-03-25
  • About author:Mingke Qi (mingkeqi@gmail.com) received his BS degree from Tianjin University in 2011. He is currently pursuing his MS degree in instrument science and technology Tianjin University. His research interests include bulk acoustic wave device modeling and characterization, FBAR filter and duplexer design, and RF circuit design.

    Liangzhen Du (du.liangzhen@zte.com.cn ) received his BS degree from Tianjin University in 1967. Professor Du’s research interests are fiber optic communications, timing and frequency control devices, and MEMS technology applications. He completed three National 863 Plan projects and was the first in China to industrialize and mass produce EDFA and fiber optic isolators. He was deemed to be an“advanced individual who made important contributions to the National 863 Plan”by the Ministry of Science and Technology, China. He also won six Science and Technology Progress Awards from Shenzhen government and other provincial governments. He has published approximately 40 papers.

    Hao Zhang (haozhang@tju.edu.cn) received his MS degree in physics and Ph.D. degree in electrical engineering from the University of Southern California, Los Angeles, in 2002 and 2006. He is currently a professor in the College of Precision Instrument and Optoelectronics Engineering, Tianjin University. His research interests are fields of RF/microwave MEMS, MEMS sensors, microfluidics, and biochips.

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

Mingke Qi, Liangzhen Du, and Hao Zhang   

  1. College of Precision Instrument and Opto-electronic Engineering, Tianjin University, Tianjin 300072, China
  • 作者简介:Mingke Qi (mingkeqi@gmail.com) received his BS degree from Tianjin University in 2011. He is currently pursuing his MS degree in instrument science and technology Tianjin University. His research interests include bulk acoustic wave device modeling and characterization, FBAR filter and duplexer design, and RF circuit design.

    Liangzhen Du (du.liangzhen@zte.com.cn ) received his BS degree from Tianjin University in 1967. Professor Du’s research interests are fiber optic communications, timing and frequency control devices, and MEMS technology applications. He completed three National 863 Plan projects and was the first in China to industrialize and mass produce EDFA and fiber optic isolators. He was deemed to be an“advanced individual who made important contributions to the National 863 Plan”by the Ministry of Science and Technology, China. He also won six Science and Technology Progress Awards from Shenzhen government and other provincial governments. He has published approximately 40 papers.

    Hao Zhang (haozhang@tju.edu.cn) received his MS degree in physics and Ph.D. degree in electrical engineering from the University of Southern California, Los Angeles, in 2002 and 2006. He is currently a professor in the College of Precision Instrument and Optoelectronics Engineering, Tianjin University. His research interests are fields of RF/microwave MEMS, MEMS sensors, microfluidics, and biochips.

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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.

Key words: FBAR, filter, TD-SCDMA, 3G

摘要： 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.

关键词: FBAR, filter, TD-SCDMA, 3G