Reconfigurable Low Pass Filter with Automatic Frequency Tuning for WCDMA and GSM Application

摘要：

A reconfigurable baseband low-pass filter (LPF) with automatic cut-off frequency tuning for WCDMA and GSM application is presented. Cut-off frequencies of 2.1 MHz and 200-KHz, and out of band IIP3 at least 20.8dBm and 22.7dBm are achieved under WCDMA and GSM mode respectively. The in band ripple is below 0.5dB in both modes. By utilizing digital frequency tuning technique, a cut-off frequency error of less than 2.5％ is obtained. The total tuning time is about 5.5us. The LPF is fabricated in SM1C 0.13um CMOS technology with chip area of 0.35mm2, and the current consumptions are 8.3mA and 1.1mA for WCDMA mode and GSM mode respectively under a power supply of 1.5 V.

作者: Chen Jiang Renzhong Xie Weinan Li Yumei Huang Zhiliang Hong

作者单位: State Key Laboratory of ASIC and Systems, FudanUniversity, Shanghai201203, China

会议类型: 国际会议

会议名称: 2011 IEEE 9th International Conference on ASIC(2011年第九届IEEE国际专用集成电路大会)

会议地点: 厦门

会议语种:英文

页码: 1143-1146

在线出版日期: 2011-10-25（万方平台首次上网日期，不代表论文的发表时间）