| 具有频率调谐的GNSS接收机双模复数滤波器 |
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| 引用本文： | 甘业兵,马成炎,袁国顺.具有频率调谐的GNSS接收机双模复数滤波器[J].半导体学报,2009,30(10):105004-5. |
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| 作者姓名： | 甘业兵 马成炎 袁国顺 |
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| 基金项目： | 国家高技术研究发展计划 |
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| 摘 要： | A fifth/seventh order dual-mode OTA-C complex filter for global navigation satellite system receivers is implemented in a 0.18μm CMOS process.This filter can be configured as the narrow mode of a 4.4 MHz bandwidth center at 4.1 MHz or the wide mode of a 22 MHz bandwidth center at 15.42 MHz.A fully differential OTA with source degeneration is used to provide sufficient linearity.Furthermore,a ring CCO based frequency tuning scheme is proposed to reduce frequency variation.The measured results show that in narrow-band mode the image rejection ratio（IMRR）is 35 dB,the filter dissipates 0.8 mA from the 1.8 V power supply,and the out-of-band rejection is 50 dB at 6 MHz offset.In wide-band mode,IMRR is 28 dB and the filter dissipates 3.2 mA.The frequency tuning error is less than±2%.
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| 关 键 词： | 全球导航卫星系统 调谐频率 接收器 双模 频率调谐 过滤器 CMOS 配置模式 |
| 收稿时间： | 2/4/2009 8:00:57 PM |
A dual-mode complex filter for GNSS receivers with frequency tuning |
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| Gan Yebing,Ma Chengyan and Yuan Guoshun.A dual-mode complex filter for GNSS receivers with frequency tuning[J].Chinese Journal of Semiconductors,2009,30(10):105004-5. |
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| Authors: | Gan Yebing Ma Chengyan and Yuan Guoshun |
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| Institution: | Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China);Hangzhou Zhongke Microelectronics Co, Ltd, Hangzhou 310053, China;Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China) |
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| Abstract: | complex filter OTA dual-mode frequency tuning CCO GNSS |
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| Keywords: | complex filter OTA dual-mode frequency tuning CCO GNSS |
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