By applying the perturbation method and the complex-source-point theory, the theoretical research of measurement of complex permittivity of uniaxial anisotropic materials by means of an electromagnetic open resonator ...By applying the perturbation method and the complex-source-point theory, the theoretical research of measurement of complex permittivity of uniaxial anisotropic materials by means of an electromagnetic open resonator has been made, and the double refraction phenomenon due to anisotropy of measured dielectric materials has been quantitatively analyzed. Finally, measurements have been made on some single-crystal quartz specimens using an automated open resonator measurement system at 8mm band.展开更多
In microwave engineering and the application of microwave energy, computation of the Q-factor of a microwave resonator is very important. This work will be very difficult when the geometric structure or the field dist...In microwave engineering and the application of microwave energy, computation of the Q-factor of a microwave resonator is very important. This work will be very difficult when the geometric structure or the field distribution of the resonator is complicated. Therefore, attentions have been paid to searching simple and useful methods for the problem. In 1984, D. Kajfez presented the incremental frequency rule展开更多
Though the concept of mutual capcitance has been given in circuit theory, it is hard to realize mutual capacitance compared with mutual inductance. Ref.[2] deals with the coupling of two capacitors consisting of four ...Though the concept of mutual capcitance has been given in circuit theory, it is hard to realize mutual capacitance compared with mutual inductance. Ref.[2] deals with the coupling of two capacitors consisting of four conductors. This note deals with the coupling of N capacitance loops consisting of 2N conductors. From it is deduced a relation among the mutual capacitance matrix of the loop capcitance coefficient matrix and the partial capcitance matrix of the conductor system.展开更多
基金Supported by the Doctoral Fbundation of the State Education Commission of China
文摘By applying the perturbation method and the complex-source-point theory, the theoretical research of measurement of complex permittivity of uniaxial anisotropic materials by means of an electromagnetic open resonator has been made, and the double refraction phenomenon due to anisotropy of measured dielectric materials has been quantitatively analyzed. Finally, measurements have been made on some single-crystal quartz specimens using an automated open resonator measurement system at 8mm band.
文摘In microwave engineering and the application of microwave energy, computation of the Q-factor of a microwave resonator is very important. This work will be very difficult when the geometric structure or the field distribution of the resonator is complicated. Therefore, attentions have been paid to searching simple and useful methods for the problem. In 1984, D. Kajfez presented the incremental frequency rule
文摘Though the concept of mutual capcitance has been given in circuit theory, it is hard to realize mutual capacitance compared with mutual inductance. Ref.[2] deals with the coupling of two capacitors consisting of four conductors. This note deals with the coupling of N capacitance loops consisting of 2N conductors. From it is deduced a relation among the mutual capacitance matrix of the loop capcitance coefficient matrix and the partial capcitance matrix of the conductor system.
