A Study of the Transmission Line Properties of Trapped Inverted Microstrip Line.
Final technical rept.,
MICROWAVE ASSOCIATES INC BURLINGTON MASS
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Trapped Inverted Microstrip, or TIM, line is a novel transmission line invented for the purpose of reducing the radiation from discontinuities and obtaining reduced line loss compared to conventional microstrip. TIM line also possesses several other useful features and is potentially an attractive transmission line medium for the microwave integrated circuit MIC technology. The objective of the study was to determine TIM lines basic transmission line properties and to provide basic design data. The scope included the line impedance and effective dielectric constant as functions of the geometrical parameters, and the characterization of simple discontinuities such as stub junctions, series gaps, impedance steps and mitre bends. It also included the design of a well-matched broad band transition from coaxial line to TIM line. The data generated was also applied to the design of a 3dB branch line hybrid coupler.
- Electrical and Electronic Equipment