| 一个高线性度的CMOS DVB-S前端芯片 |
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| 引用本文： | 张弛,王树甫. 一个高线性度的CMOS DVB-S前端芯片[J]. 半导体学报, 2007, 28(7): 1036-1040 |
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| 作者姓名： | 张弛 王树甫 |
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| 作者单位： | 北京工业大学北京嵌入式系统重点实验室,北京,100022 |
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| 摘 要： | 提出了基于CMOS工艺的直接频率变换的DVB-S射频前端电路设计.设计采用了T型匹配网络的可变衰减器、具有单端到双端变换功能的低噪声放大器以及低噪声混频器.通过使用衰减器,系统处理线性度的能力得到很大的提高.设计和流片基于SMIC 0.18μm CMOS工艺.测试结果表明,该设计能够达到超过30dB的动态范围,噪声系数小于3dB,消耗电流为10mA.在低增益情况下,具有+20dBm的输入三阶交调能力.
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| 关 键 词： | 卫星电视广播系统 调谐器 宽带 高线性度 |
| 收稿时间： | 2015-08-18 |
| 修稿时间： | 2007-03-04 |
A High Linearity CMOS DVB-S Front-End |
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| Zhang Chi, Wang Shufu. A High Linearity CMOS DVB-S Front-End[J]. Journal of Semiconductors, 2007, In Press. Zhang C, Wang S F. A High Linearity CMOS DVB-S Front-End[J]. Chin. J. Semicond., 2007, 28(7): 1036.Export: BibTex EndNote |
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| Authors: | Zhang Chi Wang Shufu |
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| Affiliation: | Beijing Embedded System Key Laboratory,Beijing University of Technology,Beijing 100022,China;Beijing Embedded System Key Laboratory,Beijing University of Technology,Beijing 100022,China |
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| Abstract: | A direct conversion CMOS DVB-S front-end employs a T-configuration variable attenuator,a single-todifferential low noise amplifier,and a low noise mixer. By innovative use of the attenuator, the linearity handling ability of the system is dramatically improved. The system is designed and fabricated in SMIC 0.18μm RF CMOS technology. The measurement data show that the front-end provides a total of more than 30dB dynamic range and a noise figure of 5dB in the wide frequency signal band. The prototype front-end consumes only 10mA and achieves an IIP3 of + 20dBm. |
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| Keywords: | DVB-S tuner wide-band high linearity |
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