A novel four-port circulator is presented which uses an inline ferromagnetic element to allow for transmission or reflection depending on the sense of the incident circularly polarized wave. This configuration has been shown to reduce the dependency on ferrite anisotropy and support higher power, low rf loss, operation. An analytic analysis of this device is presented alongside corroborating cold test data of the first prototype. High-power operation was performed at 2.856 GHz, with input power levels up to 8 MW for 3.5 μs in a pressurized nitrogen environment. The results from this research not only demonstrate ability to eliminate the use of greenhouse insulators, such as SF6, but also provide conceptual groundwork for a new class of ultrahigh power (50 MW+) nonreciprocal networks including circulators, isolators, phase shifters, and rf switches.

中文翻译：

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新型圆偏振波高功率微波环行器


提出了一种新颖的四端口环行器，它使用串联铁磁元件来允许根据入射圆偏振波的方向进行传输或反射。这种配置已被证明可以减少对铁氧体各向异性的依赖，并支持更高功率、低射频损耗操作。对该设备的分析分析与第一个原型的冷测试数据一起进行了验证。高功率运行在 2.856 GHz 下进行，在加压氮气环境中输入功率水平高达 8 MW，持续 3.5 μs。这项研究的结果不仅证明了消除使用 SF6 等温室绝缘体的能力，而且还为新型超高功率 (50 MW+) 非互易网络（包括循环器、隔离器、移相器和射频开关）提供了概念基础。