On-chip multiple tap transformer and inductor

Details On-chip multiple tap transformer and inductor On-chip multiple tap transformer and inductor

2006-08-08

2006-08-08

Nguyen, Tuyen T (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

Reexamination Certificate

active

07088214

ABSTRACT:
An on-chip multiple tap transformer balun includes a 1stwinding and a 2ndwinding having two portions. The 1stwinding is on a 1stlayer of an integrated circuit and is operably coupled for a single ended signal. The 1stand 2ndportions of the 2ndwinding are on a 2ndlayer of the integrated circuit. The 1stportion of the 2ndwinding includes a 1stnode, a 2ndnode, and a tap. The 1stnode is operably coupled to receive a 1stleg of a 1stdifferential signal and the 2ndnode is coupled to a reference potential. The tap of the 1stportion is operably coupled for a 1stleg of a 2nddifferential signal. The 2ndportion of the 2ndwinding includes a 1stnode, 2ndnode, and tap. The 1stnode is operably coupled to receive a 2ndleg of the 1stdifferential signal and the 2ndnode is operably coupled to the reference potential. The tap of the 2ndportion is coupled for a 2ndleg of the 2nddifferential signal. The 1stand 2ndportions of the 2ndwinding are symmetrical with respect to the 1stand 2ndnodes and with respect to the tap nodes.

REFERENCES:
patent: 4816784 (1989-03-01), Rabjohn
patent: 6476704 (2002-11-01), Goff
patent: 6577219 (2003-06-01), Visser
patent: 6580334 (2003-06-01), Simburger et al.
patent: 6608364 (2003-08-01), Carpentier
patent: 6661325 (2003-12-01), Suh et al.
patent: 6707367 (2004-03-01), Castaneda et al.

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