| Low power high gain gain-controlled LNA and mixer for GNSS receivers Wei Binbin(魏斌斌)1, Jiang Jinguang(江金光)1,2,3* |
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| 作者姓名： | Wei Binbin Jiang Jinguang |
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| 基金项目： | 国家重大专项(No. 2009ZX01031-002-011), 国家自然科学基金(No. 41274047), 和江苏省自然基金(No. BK2012639). |
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| 摘 要： | A low power high gain gain-controlled LNA ＋ mixer for GNSS receivers is reported. The high gain LNA is realized with a current source load. Its gain-controlled ability is achieved using a programmable bias circuit. Taking advantage of the high gain LNA, a high noise figure passive mixer is adopted. With the passive mixer, low power consumption and high voltage gain of the LNA ＋ mixer are achieved. To fully investigate the performance of this circuit, comparisons between a conventional LNA ＋ mixer, a previous low power LNA ＋ mixer, and the proposed LNA ＋ mixer are presented. The circuit is implemented in 0.18 #m mixed-signal CMOS technology. A 3.8 dB noise figure, an overall 45 dB converge gain and a 10 dB controlled gain range of the two stages are measured. The chip occupies 0.24 mm2 and consumes 2 mA current under 1.8 V supply.
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| 关 键 词： | GNSS接收机 增益控制 混频器 LNA 高增益 低功耗 低噪声放大器 偏置电路 |
| 收稿时间： | 4/5/2013 12:00:00 AM |
| 修稿时间： | 2013/5/20 0:00:00 |
A low power high gain gain-controlled LNA + mixer for GNSS receivers |
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| Wei Binbin,Jiang Jinguang.A low power high gain gain-controlled LNA + mixer for GNSS receivers[J].Chinese Journal of Semiconductors,2013,34(11):115002-7. |
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| Authors: | Wei Binbin and Jiang Jinguang |
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| Affiliation: | School of Physics and Technology, Wuhan University, Wuhan 430072, China;;School of Physics and Technology, Wuhan University, Wuhan 430072, China;GNSS Research Center, Wuhan University, Wuhan 430072, China;Suzhou Institute, Wuhan University, Suzhou 215123, China |
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| Abstract: | CMOS GNSS receiver low power LNA mixer high gain |
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| Keywords: | CMOS GNSS receiver low power LNA mixer high gain |
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