Microstrip/stripline impedance transformer

Details Microstrip/stripline impedance transformer Microstrip/stripline impedance transformer

1975-01-06

1976-11-02

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

With impedance matching

333 84M, H01P 500

Patent

active

039900240

ABSTRACT:
To eliminate reflections and oscillations when a low impedance level circuit is to be connected to a high impedance level circuit on a printed circuit board, a microstrip/stripline impedance transformer is inserted in between. This transformer is passive and bi-directional, i.e., it can be step-up or step-down. It is made of a continuous folded microstrip (also called a surface etched line) or a continuous folded stripline (also called a buried etched line) wherein each folded section is run in parallel with its preceding one. Because of the mutual coupling between each section with its preceding one, the line impedance of each section will be step-up or step-down depending on the impedance levels at both ends of the interconnection.

REFERENCES:
patent: 3289115 (1966-11-01), Carr
patent: 3691485 (1972-09-01), Beck
patent: 3754197 (1973-08-01), Cristal

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