Title:
切替え電流式積分器
Document Type and Number:
Japanese Patent JP4130410
Kind Code:
B2
Abstract:
A complex switched-current bilinear integrator ( 100 ) is formed as a pair of cross coupled real bilinear integrators and has inputs ( 10, 11, 12, 13 ) and outputs ( 14, 15, 16, 17 ) for differential pairs of in-phase ( 1 ) and quadrature-phase (Q) signals and an arrangement of sample-and-hold circuits ( 20, 30, 40, 50 ) and coupled scaling circuits ( 70, 71, 80, 81 ). Dynamic element matching is used to reduce the effect of mismatch between scaling circuits by interchanging scaling circuits in different signal paths. In order to prevent cross-talk of signals between different signal paths, the change of a scaling circuit coupled to a sample-and-hold circuit is constrained to occur only at the beginning of a sampling operation by that sample-and-hold circuit.
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Inventors:
John, B. Fuguez
Application Number:
JP2003558865A
Publication Date:
August 06, 2008
Filing Date:
December 11, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G11C27/00; G06G7/184; G11C27/02
Domestic Patent References:
| JP64051590A | ||||
| JP55131550U |
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki
Hidetoshi Tachibana
Yasukazu Sato
Hiroshi Yoshimoto
Yasushi Kawasaki