A microstrip phase-trim device using a dielectric overlay

A design procedure is given for a microstrip phase-trim device using a dielectric overlay on a conventional microstrip line. The physical operation of the device is based on the change in the effective dielectric constant of the microstrip line caused by the presence of the dielectric layer on top o...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1994-11, Vol.42 (11), p.2023-2026
Hauptverfasser: Couker, M.A., Kushner, L.J.
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description A design procedure is given for a microstrip phase-trim device using a dielectric overlay on a conventional microstrip line. The physical operation of the device is based on the change in the effective dielectric constant of the microstrip line caused by the presence of the dielectric layer on top of the microstrip line. The amount of phase trim produced by the device can be selected by the appropriate choice of dielectric constant, height, and length of the dielectric overlay. An approximate expression is given for the effective dielectric constant of the microstrip line as a function of the dielectric constant and height of the overlay. Measured results at 10 GHz are compared with predicted performance.< >
doi_str_mv 10.1109/22.330113
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subjects Applied sciences
Capacitance
Circuits
Design. Technologies. Operation analysis. Testing
Dielectric constant
Dielectric devices
Dielectric measurements
Dielectric substrates
Electronics
Exact sciences and technology
Impedance
Integrated circuits
Manufacturing
Microstrip
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transmission line measurements
title A microstrip phase-trim device using a dielectric overlay
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