M.S. Afanasiev, A.S. Bugaev, K.V. Zakharchenko, K.N. Zyabluk, A.Yu. Mityagin, N.H. Talipov, G.V. Chucheva, A.H. Nabiev

By numerical solutions of Maxwell's equations investigated the frequency dependence of characteristic impedance and the amplitude of the reflection coefficient of microstrip transmission lines on the diamond with different geometrical parameters. It is shown that in the frequency range from 3 to 15 GHz Microstrip characteristic impedance determined by the width of the conductor strip and is almost independent of microstrip other geometric parameters. To obtain characteristic impedance microstrip line of 50, 75, 100 ohms must be selected following the width strip of the conductor: 0,48 mm, 0,22 mm and 0,1 mm, respectively. In the frequency range from 3 to 15 GHz the wave reflection from a microstrip transmission line can be neglected (standing wave coefficient not exceed 1,08). Due to the high thermal conductivity of the diamond heating of at the entrance microwave power 50 W is negligibly small.