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Description
This paper explores the cooling demands of high-temperature superconducting microwave receiver front-ends, specifically aiming at microstrip antennas within a cryogenic subsystem. Firstly, a transient heat transfer model was developed based on experiments with a 3W@77K pulse tube cryocooler. Then, a cryogenic system with a 15W@77K cryocooler was designed from this model, achieving a cooling time to 75K of 17 minutes and a minimum temperature below 50K, after optimization of heat transfer paths and interface thermal resistance. Furthermore, a thermo-mechanical coupling structure was designed to facilitate rapid cryocooler replacement without compromising the devices’ vacuum environment. This configuration allows the antenna to reach 75K in 22 minutes, with a minimum temperature below 55K. The research contributes valuable insights for the design and optimization of cryogenic subsystems in high-temperature superconducting microwave receiver front-ends.
