Wide-Band ${\hbox{HE}}_{11}$ Mode Terahertz Wave Windows for Gyro-Amplifiers
Wide-Band ${\hbox{HE}}_{11}$ Mode Terahertz Wave Windows for Gyro-Amplifiers
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DOI：
10.1109/tthz.2015.2495221
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发表时间：
2016
影响因子：
3.2
通讯作者：
C. Donaldson;P. Mcelhinney;Liang Zhang;Wenlong He
中科院分区：
文献类型：
--
作者：
C. Donaldson;P. Mcelhinney;Liang Zhang;Wenlong He
基于多层膜的概念，研究了工作在低太赫兹波段的高功率陀螺放大器的宽带HE 11模输出窗口。由于混合HE 11模中的波功率集中在圆波导的中心，所以对于窗口可以实现更小的反射和更好地耦合到基本自由空间高斯模。通过对360- 400 GHz和90-100 GHz两个频率范围内的操作进行仿真，设计了两个窗口以优化性能。讨论了90-100 GHz窗口的模拟性能、实现中的实际限制和制造方法。这种窗口的构造和微波性能的测量显示低于-27分贝的反射。该结果与仿真数据相吻合，验证了仿真方法和设计的有效性。
Broadband HE11 mode output windows, based on the multilayer concept, are studied for high power gyro-amplifiers operating in the low terahertz region. As the wave power in the hybrid HE11 mode is concentrated in the center of the circular waveguide, smaller reflection and better coupling to the fundamental free space Gaussian mode can be achieved for the windows. Two windows are designed for optimized performance through simulations for operation in two frequency ranges of 360- 400 GHz and 90-100 GHz. The simulated performance, practical constraints in realization and manufacturing methods of the 90-100 GHz window is discussed. This window was constructed and microwave properties measured showing a lower than -27 dB reflection. This result agrees with simulation data which validates the simulation methodology and effectiveness of the design.