A 4th-order reconfigurable analog baseband filter for software-defined radio applications

作     者：王伟威 常学贵 王肖 韩科锋 谈熙 闫娜 闵昊 

作者机构：State Key Laboratory of ASIC & SystemFudan University 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2011年第32卷第4期

页      面：137-144页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 080706[工学-化工过程机械] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：Project supported by the Important National Science and Technology Specific Projects of China(No2009ZX01031-003-002) the National High Technology Research and Development Program of China(No2009AA011605) the National Natural Science Foundation of China(No61076028) 

主　　题：reconfigurable software-defined radio baseband filter digital assistant high linearity 

摘      要：This paper presents a 4th-order reconfigurable analog baseband filter for software-defined *** design exploits an active-RC low pass filter（LPF） structure with digital assistant,which is flexible for tunability of filter characteristics,such as cut-off frequency,selectivity,type,noise,gain and power.A novel reconfigurable operational amplifier is proposed to realize the optimization of noise and scalability of power *** chip was fabricated in an SMIC 0.13μm CMOS *** main filter and frequency calibration circuit occupy 1.8×0.8 mm;and 0.48×0.25 mm;areas,*** measurement results indicate that the filter provides Butterworth and Chebyshev responses with a wide frequency tuning range from 280 kHz to 15 MHz and a gain range from 0 to 18 *** IIP3 of 29 dBm is achieved under a 1.2 V power *** input inferred noise density varies from 41 to 133 nV/（Hz）;according to a given standard,and the power consumptions are 5.46 mW for low band（from 280 kHz to 3 MHz） and 8.74 mW for high band（from 3 to 15 MHz） mode.