频率范围2-45 GHz的低温可冷却HEMT放大器

1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI:10.1109/EUMA.1994.337233

H. Mattes, M. Pilz

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引用次数: 0

摘要

介绍了频率为2 GHz ~ 45 GHz的低温可冷却HEMT放大器的设计和性能。已经实现了15ghz时15k、32ghz时30k和43ghz时35k的噪声温度。基于Pucel [5]， Rhode[4]和Pospieszalski[3]的工作，采用半经验方法推导了生冷HEMT的噪声参数。给出了20 K时的等效温度Td的经验公式。测量结果与模型吻合良好。

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Cryogenically Coolable HEMT Amplifiers in the Frequency Range 2-45 GHz

The design and performance of cryogenically coolable HEMT amplifiers in the frequency range from 2 GHz to 45 GHz is presented. Noise temperatures of 15 K at 15 GHz, 30 K at 32 GHz and 35 K at 43 GHz have been achieved. A semi-empirical approach based on the work of Pucel [5], Rhode [4] and Pospieszalski [3] is used for the derivation of the cyogenically cooled HEMT's noise parameters. An empirially developed formula for the equivalent temperature Td at 20 K is given. Good agreement is obtained between measurements and the model.

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1994 24th European Microwave Conference

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