| 一种应用于直接变频系统的低功耗混合信号直流失调消除电路 |
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| 引用本文： | 杨利君,袁芳,龚正,石寅,陈治明. 一种应用于直接变频系统的低功耗混合信号直流失调消除电路[J]. 半导体学报, 2011, 32(12): 125008-5 |
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| 作者姓名： | 杨利君 袁芳 龚正 石寅 陈治明 |
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| 作者单位： | Department of Electronic Engineering, Xi’an University of Technology, Xi’an 710048, China;Suzhou-CAS Semiconductors Integrated Technology Research Center, Suzhou 215021, China;Suzhou-CAS Semiconductors Integrated Technology Research Center, Suzhou 215021, China;Suzhou-CAS Semiconductors Integrated Technology Research Center, Suzhou 215021, China;Department of Electronic Engineering, Xi’an University of Technology, Xi’an 710048, China |
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| 摘 要： | A low power mixed signal DC offset calibration (DCOC) circuit for direct conversion receiver applications is designed. The proposed DCOC circuit features low power consumption, fast settling time and a small die area by avoiding the trade-off between loop response time and the high pass frequency of the DCOC servo loop in conventional analog DCOC systems. By applying the proposed DC offset correction circuitry, the output residue DC offset voltages are reduced to less than 38 mV and the DCOC loop settling time is less than 100 μs. The DCOC chip is fabricated in a standard 0.13-μm CMOS technology and drains only 196 μA from a 1.2-V power supply with its chip area of only 0.372 × 0.419 mm2.
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| 关 键 词： | 直流偏移 应用电路 直接转换 混合信号 低功耗 接收器 校准 响应时间 |
| 收稿时间： | 2011-07-19 |
| 修稿时间： | 2011-09-13 |
A low power mixed signal DC offset calibration circuit for direct conversion receiver applications |
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| Yang Lijun,Yuan Fang,Gong Zheng,Shi Yin and Chen Zhiming. A low power mixed signal DC offset calibration circuit for direct conversion receiver applications[J]. Chinese Journal of Semiconductors, 2011, 32(12): 125008-5 |
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| Authors: | Yang Lijun Yuan Fang Gong Zheng Shi Yin Chen Zhiming |
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| Affiliation: | 1 Department of Electronic Engineering, Xi＇an University of Technology, Xi＇an 710048, China 2 Suzhou-CAS Semiconductors Integrated Technology Research Center, Suzhou 215021, China) |
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| Abstract: | |
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| Keywords: | mixed signal DC offset calibration analog to digital converter digital control logic unit digital to analog converter least significant bit |
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