Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-02-06
2007-02-06
Trinh, Minh (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C336S200000, C336S232000
Reexamination Certificate
active
10727378
ABSTRACT:
A method of manufacturing an on-chip transformer balun includes creating, on a semiconductor substrate, a primary winding having at least one substantially symmetrical primary turn on a first dielectric layer and at least one metal bridge on a second layer. A secondary winding is created on the semiconductor substrate, the secondary winding having at least one substantially symmetrical secondary turn on a third dielectric layer and at least one metal bridge on a fourth dielectric layer. In an alternative embodiment, the primary winding has at least one first primary turn on a first dielectric layer and at least one second primary turn on a second dielectric layer and at least one via that operably connects the first primary turn to the second primary turn. The secondary winding has at least one first secondary turn on a third dielectric layer and at least one second secondary turn on a fourth dielectric layer.
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Castaneda Jesse A.
Rofougaran Reza
Yang Hung Yu (David)
Broadcom Corporation
Garlick & Harrison & Markison
Markison Timothy W.
Stuckman Bruce E.
Trinh Minh
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