Design of balanced RF filter for wireless applications using FBAR technology

被引：0
|
作者：
Jin, Hao [1 ]
Dong, Shurong [1 ]
Wang, Demiao [1 ]
机构：
[1] Zhejiang Univ, Dept Informat Sci & Elect Engn, Hangzhou 310027, Peoples R China
来源：
2005 IEEE CONFERENCE ON ELECTRON DEVICES AND SOLID-STATE CIRCUITS, PROCEEDINGS | 2005年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present a balanced RF filter based on thin film bulk acoustic resonator (FBAR) technology for wireless applications, and demonstrate its usage in the Wide-Band Code Division Multiple Access (WCDMA) front-end as post-LNA filter. The filter, which consists of two lattice sections and one symmetric ladder section, provides deep rejection at stop-band, particularly at transmitter band (1920-1980 MHz), steep roll-off at pass-band edges, and excellent common mode rejection ratio (CMRR). The typical broadband rejection is better than 60 dB. The small size, low in-band insertion loss, sharp roll-off, high stop-band rejection, good temperature stability, and compatibility with semiconductor processing make this FBAR filter an ideal choice for GHz wireless applications.
引用
收藏
页码：57 / 60
页数：4
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