微波谐振腔

When it is applied to a microwave high-Q cavity resonator,this approach provides better ...

采用该方法对一个微波高Q谐振腔进行测量，得到了较好的结果。

When it is applied to a microwave highQ cavity resonator, this approach provides better results.

采用该方法对一个微波高Q谐振腔进行测量，得到了较好的结果。

Quality factor ; cavity resonator ; microwave measurement ; bandwidth of half power

品质因数；谐振腔；微波测量；半功率带宽

Microwave measurement ; Dielectric resonator ; Cavity resonator ; Evanescent waveguide

微波测量；介质谐振器；谐振腔；截止波导

The relationship between multivalued spacing of relative permittivity,measuring frequency and length of the sample has been gained.

在微波和毫米波波段，介质复介电常数的测量按测量原理可分为谐振腔法和网络参数法两大类[1]。

A circle is placed at the launch point to improve the interaction between the electron beam and the fields supported by the slow wave structure, thus to control the beam current density at the launch point, and to minimize the loss of the electron beam energy. The inaner radii of the extractor vanes are slightly larger than those of other SWS vanes, which increases the axial group velocity and enhances the microwave output power and efficiency. Implementation of two RF choke vanes stops the leakage of microwave pulse power toward the diode, and makes the device more compact than the conventional MILO.

该振荡器在阴极电子发射起点加圆环，控制此处电子束的发射密度，来减少电子能量的损耗，改善束－波互作用；逐渐加大慢波结构的后两个叶片的内半径，增大微波群速度，便于谐振腔中的能量输出，提高微波输出效率；采用两个扼流片有效地阻止了微波功率向二极管区泄漏，相应减小了器件的尺寸。

The operating process of the Cerenkov generator with a resonant cavity is simulated when being filled with He gas at various density by PIC method.

采用PIC模拟方法，研究了具有谐振腔的多波切伦柯夫振荡器在充入不同密度的氦气下工作的物理过程，分析了等离子体产生物理机制及其对微波输出影响。

A new type of X-band high power microwave source - the Resonator Cerenkov Oscillator-Tapered Amplifier Tube is put forward for the first time in the present paper. The proposed high power microwave device is based on a comprehensive investigation of related research work in the world and is in agreement with the demands to the development of practical high power microwave sources.

在较全面调研和认真分析高功率慢波器件发展趋势的基础上，结合返波振荡器等切仑科夫器件和渐变锥形结构微波器件的特点，提出了一种新型X波段高功率微波发生器—低磁场谐振腔切仑科夫振荡器—锥形放大管。

Considering the design parameters of the BEPCⅡ, in the case of one cavity type being adopted, the thesis analyzes the RF performance of accelerating mode, the suppression of higher order modes , and the restriction caused by HOMs against beam current threshold.

结合BEPCⅡ的设计参数，论文对其中一种腔型在BEPCⅡ上使用时加速模式的微波性能、高次模的抑制效果以及高次模对储存流强阈值的限制等方面进行了分析，并在铝模型腔上测量了加铁氧体高次模抑制器前后，超导腔中各种谐振模式的有载品质因子及其频率的分布。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。