X波段高峰值功率速调管功率合成器设计
Design of power combiner for X-band high power klystron
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摘要: 基于微波电路理论和EBMA(extended boundary condition model analysis)电磁计算方法，先后设计了一个工作在9 GHz的4合1和8合1功率合成器。功率合成器可将多个侧壁矩形波导中相同输入的TE10模电磁波在中心圆波导中以TE01模式输出，实现功率的合成。利用EBMA方法和CST软件对所设计功率合成器的传输系数进行了计算，在中心频率9 GHz处，计算结果分别为1.00和0.99，从而验证了功率合成器具有良好的功率合成效果。对于8合1功率合成器，还根据模型简化的想法，使得功率合成器加载后，对输出腔间隙阻抗的计算成为可能。Abstract: With the urgent need of high power sources, a design method for power combiner of X-band high power klystron based on microwave theory and EBMA(extended boundary condition modal analysis) is presented in this paper. Power combiner can combine the input from its rectangular arms into one central circular waveguide working in TE01 mode, so the transmission parameter can determine its performance. Using EBMA and CST software, the transmission parameter of the designed 4-to-1 power combiner is calculated as 1 and 0.99, respectively, which can confirm its validity. For 8-to-1 power combiner, a simplified model has been proposed, which makes possible the calculation of gap impedance of an output cavity after its loading.
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Key words:
- high power source /
- x-band klystron /
- power combiner /
- mode matching /
- equivalent microwave circuit
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