高功率多注速调管TM310模圆柱形谐振腔杂模抑制方法

韩慧鹏; 王勇; 宋金星

doi:10.3724/SP.J.1146.2009.00768

高功率多注速调管TM310模圆柱形谐振腔杂模抑制方法

doi: 10.3724/SP.J.1146.2009.00768

韩慧鹏^{①②;王勇,},
王勇,
宋金星

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出版历程
- 收稿日期: 2009-05-20
- 修回日期: 2009-09-28
- 刊出日期: 2010-06-19

Parasitic-Mode-Suppressing Method in TM310-Mode Cylindrical Resonator for High Power Multi-beam Klystron

Han Hui-peng^{①②;王勇
,},
Wang Yong,
Song Jin-xing

摘要

摘要: 该文针对TM310模(主模)圆柱形谐振腔提出了一种新的杂模抑制方法。为抑制与主模相邻的低次杂模TM020，采用在谐振腔中放置接收振子天线的方法，并推导了放入接收振子天线后，模式频率变化量的表达式。由此发现：模式频率变化量仅依赖于该模式在接收振子天线处的电场强度，而与其磁场无关；通过适当调整接收振子的位置，可使主模和TM020 模具有不同的频率变化量，从而能增大模式之间的频率间隔，避免TM020 模对主模的干扰。另外，为抑制与主模相邻的杂模TM+310，采用了在谐振腔中放置短路杆阵的方法。利用CST-MWS软件对X波段此类谐振腔进行了模拟计算，验证了该方法的有效性。
- 速调管; 杂模抑制; TM310 模; 接收振子天线; 短路杆阵
Abstract: A new parasitic-mode-suppressing method for TM310 mode (operating mode) cylindrical resonator is presented in this paper. In order to suppress TM020 mode, a receiving-antenna is set into the resonator, and then the expression for frequency offset is derived based on the electromagnetic theory. Furthermore, two conclusions can be obtained from the formula: frequency offset of a mode only depends on the modes electric field in the position of the receiving-antenna; setting the antenna suitably can make frequency offsets of TM310 mode and TM020 mode differently, so the frequency interval between TM310 mode and TM020 mode may be enlarged, which helps avoid the interference of TM020 mode in the TM310 mode resonator. On the other hand, short-circuit- pole-array set into the resonator is used to suppress the TM+310 mode. By means of CST-MWS, this kind of resonator in X-band is simulated, which shows the availability of the parasitic-mode-suppressing method.

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