MICROWAVE RESONANT ELEMENTS UP TO 20 GHZ MANUFACTURED IN PHOTOIMAGEABLE THICK-FILM TECHNOLOGY

摘要

Microwave circuits demands for high resolution patterning, rectangular cross-sections, sharp edges and smooth surfaces are met by the photoimageable thick-film technology successfully competing with traditional screen printing. The paper presents the photosensitive pastes, describes the exposure and development units necessary for carrying out the photoimaging process, depicts manufacturing steps that lead by photoforming to microwave structures of parameters comparable to the thin film ones. Edge-coupled filters built on microstrip resonators are the test samples. Transmission and reflection characteristics of filters are measured using vector network analyser and compared to the simulated characteristics.