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We study excitation of magnetostatic backward volume waves on the microstrip line. The relation between the current density in the line and the normal component of the magnetic induction is found. The impedance of the line per unit length, i.e., its reactance and radiation resistance per unit length, is represented as a functional of the current density. The dependence of the operating-wave radiation resistance on the transverse size of the line and the width of the dielectric gap is studied. The radiation resistances of multistrip array and meander-type converters of magnetostatic backward volume waves are calculated

An excitation of magnetostatic surface waves (MSSW) with a one screen coplanar transmission line was considered for the case, when coplanar line is placed at some distance from the ferrite film surface. A technique is described for computing the impedance (both the reactance and radiation resistance) per unit length of a one screen coplanar transmission line. The dependence of this impedance on the spacing between the coplanar line and ferrite film has been studied for the case of magnetostatic surface waves. It has been found that smaller values of this spacing cause increase the frequency range of effective MSSW excitation. Narrow bandwidth (∼ 200 MHz centered 8,75 GHz) low insertion loss filters can be achieved by use shorted one screen coplanar transducers.

The results of radiation impedance design of magnetostatic forward volume wave microstrip transducer are presented in this report. It was analysed the radiation impedance as a function of frequency for microstrip lines with different strip width and distance between the line conductors and the surface of magnetized ferrite film.

The results of radiation resistance design of magnetostatic forward volume wave multistrip transducer are presented in this report. It was analysed the radiation resistance as a function of frequency for multistrip lines with different number strips and distance between the line conductors and the surface of magnetized ferrite film.