Open- and short-circuit terminated series stubs in finite-width coplanar waveguide on silicon

Author

Ponchak, George E. ; Katehi, Linda P B

Author_Institution

Electron Device Technol. Branch, NASA Lewis Res. Center, Cleveland, OH, USA

Volume

45

Issue

6

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

970

Lastpage

976

Abstract

Open- and short-circuit terminated series stubs in finite-width coplanar waveguide (FCPW) fabricated on high-resistivity Si are experimentally characterized over the frequency range of 2-40 GHz. In coplanar waveguide (CPW), these stubs are typically placed in the center conductor, but in FCPW, the stubs may also be placed in the ground planes resulting in novel circuit elements with characteristics that make the stubs useful for matching circuits and filters. Equivalent circuit models for the stubs are presented, and it is shown that when the stub is in the ground plane the resonant frequency is equal, the inductance and resistance is halved, and the capacitance is double the values of the same stub in the center conductor. Furthermore, it is shown that by varying the stub position in the ground plane, higher Q stubs can be obtained

Keywords

band-pass filters; coplanar waveguides; elemental semiconductors; equivalent circuits; impedance matching; microwave filters; silicon; waveguide filters; 2 to 40 GHz; Si; bandpass filters; bandstop filters; equivalent circuit models; finite-width coplanar waveguide; ground planes; matching circuits; resonant frequency; stub position; terminated series stubs; Band pass filters; Circuits; Conductors; Coplanar waveguides; Electromagnetic heating; Matched filters; Planar waveguides; Resonance; Resonant frequency; Silicon;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.588611

Filename

588611