Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2007-05-29
2008-12-02
Le, Don P (Department: 2819)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S166000
Reexamination Certificate
active
07459989
ABSTRACT:
A distributed phase shifter including: a first planar winding having its ends defining accesses in phase opposition; a second planar winding coupled with the first one and grounded by a first capacitive element; a third planar winding in a conductive level different from that receiving the first winding and electrically in series with the second winding; and a fourth planar winding, coupled with the third one in a conductive level different from that receiving the second winding, first ends of the third and fourth windings being connected by a capacitive element and their second ends being connected by another capacitive element, their first and second respective ends defining accesses in phase quadrature.
REFERENCES:
patent: 3879689 (1975-04-01), Seidel
patent: 2006/0087384 (2006-04-01), Ezzendine
patent: 2008/0024242 (2008-01-01), Nam et al.
French Search Report form French Patent Application 06/51991, filed May 31, 2006.
Robert C. Frye; Sharad Kapur: Robert C. Melville: “A 2-GHz Quadrature Hybrid Implemented in CMOS Technology” IEEE Journal of Solid-State Circuits, May 12, 2002, May 15, 2002, pp. 287-290, XP002403964 IEEE, NY, USA.
Dupont Francois
Ezzeddine Hilal
Therond Benjamin
Jorgenson Lisa K.
Le Don P
Morris James H.
STMicroelectronics S.A.
Wolf Greenfield & Sacks P.C.
LandOfFree
Integrated phase shifter of differential signals in quadrature does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated phase shifter of differential signals in quadrature, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated phase shifter of differential signals in quadrature will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4025618