Hongliang Tian;Haiwen Liu;Zeren Song;Yulian Xu;Ruolin Wang;Shaofei Wang
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Cryogenic C-Band Hybrid MMIC Low-Noise Amplifier Using HTS Input Matching Network Assisted by Gray Wolf Optimizer
In this article, a cryogenic 4–8-GHz hybrid monolithic microwave integrated circuit (MMIC) low-noise amplifier (LNA), enhanced with an external high-temperature superconductor (HTS) impedance matching network (IMN), is proposed. It evolves from a reference InP MMIC LNA by substituting the on-chip IMN with an external HTS IMN, facilitating seamless integration with superconductor circuit units. The Gray Wolf Optimization algorithm is utilized to optimize the IMN. Compared with the reference MMIC LNA, the hybrid MMIC LNA exhibits an average noise reduction of approximately 5.2 K at 77 K and 1.9 K at 15 K during testing. These results make it a promising candidate for applications in superconductor receivers.
期刊介绍：
IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.
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