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	Low noise amplifier in HTS system
	Cai Kang-kang ; Tang Shi-ming ; Zhang Xiao-ping ; Cao Bi-song
	2010-05-06 ; 2010-05-06
关键词	Practical/ capacitance cryogenics high-temperature superconductors impedance matching low noise amplifiers microwave amplifiers S-parameters superconducting microwave devices/ low noise amplifier LNA HTS system high temperature superconducting system noise matching impedance matching gain matching linearity matching S parameters deviation cryogenic temperature transistor Smith chat adjustable microstrip capacitance gain 18 dB noise figure 0.5 dB bandwidth 1.9 GHz to 2 GHz/ B1220 Amplifiers B1350 Microwave circuits and devices B3240M Superconducting microwave devices/ gain 1.8E+01 dB noise figure 5.0E-01 dB bandwidth 1.9E+09 to 2.0E+09 Hz
中文摘要	A method was presented to design and fabricate a low noise amplifier (LNA) which works in high temperature superconducting system at low temperature (70K). The design methodology integrates the aspects of noise matching, impedance matching, gain matching and linearity matching. The LNA performances have a remarkable change due to the S parameters deviation of transistor in cryogenic temperature. Smith chat and adjustable microstrip capacitance are used to debug these deviations is discussed and in cryogenic temperature the LNA achieved a power gain of 18 dB, a maximum noise figure of 0.5 dB, and input and output'return loss of better than -20dB within the bandwidth 1.9 GHz-2 GHz.
语种	中文 ; 中文
出版者	Editorial Board of Microcomputer Information ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/15407]
专题	清华大学
推荐引用方式 GB/T 7714	Cai Kang-kang,Tang Shi-ming,Zhang Xiao-ping,et al. Low noise amplifier in HTS system[J],2010, 2010.
APA	Cai Kang-kang,Tang Shi-ming,Zhang Xiao-ping,&Cao Bi-song.(2010).Low noise amplifier in HTS system..
MLA	Cai Kang-kang,et al."Low noise amplifier in HTS system".(2010).

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