Transmission line mode converter

Abstract

Abstract PURPOSE:To attain excellent coplanar microstrip conversion over a wide band from a low frequency till an ultrahigh frequency by utilizing the change in the electric field distribution depending on a grounded type coplanar line. CONSTITUTION:The width of a center conductor strip 8 of the grounded type coplanar line B and a gap (G) between surface ground conductors 6a, 6b arranged at both sides are being expanded while keeping a single characteristic impedance and the size of the gap G is selected at least the thickness of a dielectric base 2 at a connecting point with a microstrip line A. That is, in applying coplanar microstrip conversion, the gap G is widened gradually from the structure shown in figure (a) to form the electric field distribution shown in figure (c). Thus, the mode conversion from the coplanar line transmission mode into the microstrip line transmission mode is performed easily without any characteristic deterioration.

Inventors

• 👤 Masahiro Muraguchi
• 👤 Kuniki Owada

Bibliographic Details