Wide-band CMOS low noise amplifier for applications in radio astronomy
Wide-band CMOS low noise amplifier for applications in radio astronomy
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适用于射电天文学应用的宽带 CMOS 低噪声放大器
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
B. Veidt
中科院分区：
文献类型：
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作者：
L. Belostotski;J. Haslett;B. Veidt
提出了一种用于平方公里阵列射电望远镜概念验证设计的CMOS低噪声放大器（LNA）。一个新的变化，一个众所周知的源退化LNA拓扑结构，允许调谐的功率匹配中心频率独立于LNA的噪声系数接近其最小噪声的频率。该LNA采用0.18 μ m CMOS工艺设计，回波损耗优于11 dB，噪声温度为40 K，功率增益为17 dB，IP 1dB为-10 dBm，功耗为50 mW（1.8 V电源）。文中给出了低噪声放大器的设计过程，并将其性能与已有的结果进行了比较
A CMOS low noise amplifier (LNA) is proposed for a proof-of-concept design of the square kilometer array (SKA) radio telescope. A novel variation on a well-known source-degenerated LNA topology is introduced that allows tuning of the power match centre frequency independently from the frequency at which the LNAs noise figure approaches its minimum noise. The 0.7-1.4 GHz LNA designed in 0.18mum CMOS achieves better than 11 dB return loss with a noise temperature of 40 K, provides a power gain of 17 dB and IP1dB of -10dBm while consuming 50 mW of power from a 1.8 V supply. The design procedure of the LNA is presented and performance of the LNA is compared with previously published results