高功率微波弯曲圆波导设计
Design of bend circular waveguides for high-power microwave applications
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摘要: 报道了可分别传输TM01模和TE01模的两种弯曲圆波导的设计方法和计算结果。研究表明：所设计的TM01模弯曲波导和TE01模弯曲波导在中心频率上传输效率均超过99.5%，传输效率大于95%的带宽分别达到20.0%和14.4%；该两个弯曲波导也分别适用于传输TE11模和TM11模；水平极化TE11模与TM01模、垂直极化TM11模与TE01模在弯曲圆波导中传输时具有相似的传输效率和频带特性；而垂直极化TE11模、水平极化TM11模由于不易和其它模式耦合，在弯曲波导中传输时具有较高的传输效率。Abstract: The design methodology and numerical results for two bend circular waveguides(BCWGs) suitable for transmitting TM01 mode and TE01 mode, respectively, were reported. The optimized TM01 mode BCWG and TE01 mode BCWG both have a transmission efficiency of over 99.5% at center frequency with separate bandwidth of 20.0% and 14.4%. Moreover, the two BCWGs are also suitable for transmitting TE11 mode and TM11 mode, respectively. The transmission characteristics of horizontal polarized TE11 mode and vertical polarized TM11 mode are similar with those of TM01 mode and TE01 mode, respectively. Vertical polarized TE11 mode and horizontal polarized TM11 usually have high transmission efficiencies through BCWGs, since they are unlikely to couple with other modes.
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