In this article, a $3\pi $ band-edge dual frequency oscillator using a novel half-period staggered folded waveguide (FWG) is proposed. Simulation results from CST Particle Studio show that the half-period staggered FWG could form a stopband at $3\pi $ phase shift with a high coupling impedance, enabling the device operating at two frequencies. A prototype oscillator was then designed and fabricated. The experimental results showed that it was capable of operating at both 89.2 and 94.5 GHz with the maximum output power 148 and 65W, respectively. The testing results are also compared with the simulation.

中文翻译：

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基于新型折叠波导结构的3π带边双频振荡器

在这篇文章中，一个 $3\pi $ 提出了使用新型半周期交错折叠波导（FWG）的带边双频振荡器。CST Particle Studio 的仿真结果表明，半周期交错 FWG 可以在 $3\pi $ 具有高耦合阻抗的相移，使设备能够在两个频率下工作。然后设计并制造了原型振荡器。实验结果表明，它能够在 89.2 和 94.5 GHz 下工作，最大输出功率分别为 148 和 65W。测试结果也与模拟进行了比较。