Thin-film monolithic coupled spiral balun transformer

Details Thin-film monolithic coupled spiral balun transformer Thin-film monolithic coupled spiral balun transformer

1999-08-04

2000-08-01

Gellner, Michael L.

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

336232, 336223, H01F 500

Patent

active

060972734

ABSTRACT:
A balanced/unbalanced (balun) transformer has at least one pair of stacked coupled spiral lines. The spiral lines are formed on different levels of the device with the upper spiral line nested between the lower spiral line. This structure allows the width W and spacing S of the lines to be independently varied. Analysis of devices made with this configuration shows an optimum ratio of W to W+S of from 0.4 to 0.6.

REFERENCES:
patent: 5477204 (1995-12-01), Li
patent: 5583474 (1996-12-01), Mizoguchi et al.

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