Filters Based of Segments of Microstrip Lines

Electromagnetic properties of microstrip lines with stepwise heterogeneity are considered. The methods of control of frequency-selective ultrahigh-frequency devices are analyzed. The two constructions of controled frequency-selective devices on the basis of heterogeneous microstrip lines with electromechanical and optical control by resonance frequency are proposed. The results of the experimental investigations are shown. The prospect of using such structures for the creation of guided frequency selective microwave devices on their basis is shown.