Split striplines with adjustable parameters and devices based on them

Abstract

The split strip lines (SSL) with adjustable parameters and examples of devices based on them are examined. Changing the parameters of the split strip lines are carried out with the help of so-called controlling strips, coupled with parts of the split strip line and having a strong electromagnetic coupling with them. Between controlling strips and the screen the lumped regulating elements are included. In wide frequency range such strip structures can be considered as transmission lines with changeable characteristic impedance and changeable propagation coefficient. Frequency analysis of of scattering matrix S of controlled split strip lines with different circuits of strip inclusion is carried out. Examples of the use of split strip lines with adjustable parameters in the design of different devices were discussed.