Abstract
The applicability of the various copper compositions to the production of thick-film microwave devices has been examined. The results of this work are presented in this paper. The paper presents criteria and computer programs for thick-film microwave integrated circuits. The investigations of asymmetrical striplines, stripline and circular resonators, microwave filters etc., have been used as a basis. The circuits were examined within the frequency band of 1–12 GHz. Based on the measurement results and the statistical analysis of the parameters of microwave integrated circuits, interesting conclusions concerned with the applications of thick-film techniques to microwaves have been drawn. The results obtained have been compared with other work and new mathematical models have been prepared. Finally the future development of microwave integrated circuits has been commented on.