Adaptive digital calibration techniques for narrow band low-IF receivers with on-chip PLL

作     者：李娟 章华江 赵冯 洪志良 

作者机构：State Key Laboratory of ASIC & System Fudan University 

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

年 卷 期：2009年第30卷第6期

页      面：100-106页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

主　　题：short range device AGC AFC receiver I/Q calibration 

摘      要：Digital calibration and control techniques for narrow band integrated low-IF receivers with on-chip frequency synthesizer are *** calibration and control system,which is adopted to ensure an achievable signal-to-noise ratio and bit error rate,consists of a digitally controlled,high resolution dB-linear automatic gain control（AGC）,an inphase（I） and quadrature（Q） gain and phase mismatch calibration,and an automatic frequency calibration（AFC） of a wideband voltage-controlled oscillator in a PLL based frequency *** calibration system has a low design complexity with little power and small die *** results show that the calibration system can enlarge the dynamic range to 72 dB and minimize the phase and amplitude imbalance between I and Q to 0.08° and 0.024 dB,respectively,which means the image rejection ratio is better than 60 *** addition,the calibration time of the AFC is 1.12 μs only with a reference clock of 100 MHz.