The dominant mode in closed circular groove guide

The structure of closed circular groove guide is similar to that of open circular groove guide, but it can prevent energy from leaking out of the guide. In this paper, the dominant mode in closed circular groove guide is considered. The characteristic equation is derived and solved and the results are discussed.The Project Supported by National Natural Science Foundation of P. R. China and National Key Laboratory of Millimeter Waves Foundation of P. R. China     

The wide band property of circular groove guide

According to the analyses of the moding properties of circular groove guide, the guide dimension for single mode operation is determined. Our results show that circular groove guide has the advantage of wide band.The Project Supported by National Natural Science Foundation of P.R. China and National Key Laboratory of Millimeter Waves Foundation of P. R. China     

The characteristic equations of higher-order modes in circular groove guide

The characteristic equations of higher-order modes, including TE mode and TM mode, are derived in this paper. These equations are very useful for us to understand the mode distribution in circular groove guide.The Project Supported by National Natural Science Foundation of P.R.China     

Coupling performance of closed double circular groove guide

Double circular groove guide is a simple structure which can be used to construct directional coupler. In this paper, the coupling property of two uniformly coupled circular groove guides is studied based on the transverse resonance analysing results of closed double circular groove guide.The project supported by National Natural Science Foundation of P.R. China     

TE01-TE11 mode transducer

A transition between rectangular waveguide and circular groove guide is described. The composite transition consists of two sections. It is theoretically designed to provide both mode matching as well as low reflection coefficient. The performance of the transducer is plotted.The Project Supported by National Science Foundation of P. R. China     

Further analysis of asymmetric double circular groove guide

As the development of our previous discussion on asymmetric double circular groove guide, the second-order approximate characteristic equation of this structure has been derived. This analysis will give more accurate result.The Project Supported by National Natural Science Foundation of P. R. China     

Theoretical characteristic of asymmetric double circular groove guide

In order to get a better understanding of the coupling properties of asymmetric double circular groove guide, the characteristic equation of this structure has been solved and its theoretical curves has been given and discussed.The Project Supported by National Natural Science Foundation of P.R.China     

Analysis of the leaky antenna based on the circular groove guide

The circular groove guide is one of several waveguides that will widely be used at millimeter and submillimeter waveband. The leaky antenna based on the circular groove guide is studied by the method based on a transverse equivalent network in this paper.The Project Supported by National Natural Science Foundation of P.R. China     

A simple method improving the analyzing accuracy of circular groove guide

A simple method is introduced to improve the analysing accuracy of circular groove guide. With this method, the characteristic equation of circular groove guide is derived and its solution is given and discussed.The Project Supported by National Natural Science Foundation of P.R.China     

The solution of the characteristic equation of circular-rectangular groove guide

Circular-rectangular groove guide is a new type of structure we have presented for coupling between circular groove guide and rectangular groove guide. In this paper, as the continuity of our previous work, the characteristic equation of circular-rectangular groove guide has been solved and the numerical results have been given and discussed.The Project Supported by National Natural Science Foundation of P. R. China