High performance microshield line components

Several millimeter-wave passive components have been fabricated using the microshield transmission line geometry, and their performance is presented herein. Microshield is a quasi-planar, half-shielded design which uses a thin dielectric membrane (1.5 /spl mu/m) to support the conducting lines. This...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1995-03, Vol.43 (3), p.534-543
Main Authors: Weller, T.M., Katehi, L.P.B., Rebeiz, G.M.
Format: Article
Language:English
Subjects:
Applied sciences
Band pass filters
Biomembranes
Circuit properties
Conductors
Coplanar waveguides
Dielectric constant
Dielectric losses
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Geometry
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Millimeter wave technology
Transmission lines
Waveguide transitions
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Summary:Several millimeter-wave passive components have been fabricated using the microshield transmission line geometry, and their performance is presented herein. Microshield is a quasi-planar, half-shielded design which uses a thin dielectric membrane (1.5 /spl mu/m) to support the conducting lines. This approach provides a nearly homogeneous, air-filled environment and thus allows extremely broad-band TEM operation. This paper examines the conductor loss and effective dielectric constant of microshield lines and presents results on transitions to conventional coplanar waveguide, right-angle bends, different stub configurations, and lowpass and bandpass filters. Experimental data is provided along with numerical results derived from an integral equation method. The microshield line is shown to be very suitable for high performance millimeter and submillimeter-wave applications.< >
ISSN:0018-9480
1557-9670
DOI:10.1109/22.372098