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发明公开
CN109326860A 低温3GHz-9GHz宽温区超宽带微波隔离器及应用 失效 - 权利终止

低温3GHz-9GHz宽温区超宽带微波隔离器及应用
摘要：
本发明提供了一种工作于低温环境的3GHz-9GHz频段超宽带微波隔离器，包括铁氧体，所述铁氧体采用YAlIG-10A制成，其中Al2O3含量为2.43％，该材料300K时，饱和磁化强度为4πMs＝880Gauss，100K时4πMs＝1300Gauss，4K时4πMs＝1350Gauss。本项发明弥补了国内低温超宽带微波隔离器研制的空白，为射电天文等低噪声雷达接收机前端系统提供了一个关键器件，低温4K-100K下其相对工作带宽为100％，反向隔离度高，插入损耗小，可以满足超导接收机系统对低温超宽带微波隔离器的需求。
摘要（英）：

The invention provides a 3GHz-9GHz frequency-band ultra-wide-band microwave isolator working in a low-temperature environment. The 3GHz-9GHz frequency-band ultra-wide-band microwave isolator working in the low-temperature environment comprises ferrite, wherein the ferrite is made from YAlIG-10A, wherein the content of Al2O3 is 2.43%, when the material is 300 K, the saturation magnetization 4piMs equals to 880 Gauss, when the material is 100 K, 4piMs equals to 1300 Gauss, and when the material is 4 K, 4piMs equals to 1350 Gauss. The gap of research of a domestic low-temperature ultra-wide-bandmicrowave isolator is filled, a key device is provided for a front end system of a low-noise radar receiver such as radio astronomy, at the low temperature of 4K-100 K, the relative working bandwidthis 100%, the reverse isolation is high, insertion loss is low, and the requirement of a super-conductive receiver system to the low-temperature ultra-wide-band microwave isolator can be met.

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