Title:
【発明の名称】自己補償型位相検波器
Document Type and Number:
Japanese Patent JP2002509415
Kind Code:
A
Abstract:
A self compensating phase detector. Using two identical phase detectors introducing one of the phase detectors and a controlled variable phase shifter in a negative feedback loop shifts one dock signal enough such that the shifted signal compensates for existing static phase error. This self-compensation improves the accuracy of the phase difference measurement by significantly reducing the effect of static phase error. Moreover, this reduction remains true in spite of variations in process, temperature and voltage. Thus, inherent immunity of the invention to environmental conditions results in fewer failing parts during fabrication. Additionally, because the design is self-adjusting to environmental changes, design ease is significantly improved.
Inventors:
Luke A. Johnson
Application Number:
JP2000540451A
Publication Date:
March 26, 2002
Filing Date:
December 17, 1998
Export Citation:
Assignee:
INTEL CORPORATION
International Classes:
G01R25/00; H03L7/081; H03L7/087; (IPC1-7): H03L7/081; G01R25/00
Domestic Patent References:
| JPH0467823U | 1992-06-16 | |||
| JPH05235751A | 1993-09-10 | |||
| JPH0774624A | 1995-03-17 |
Foreign References:
| US5351000A | 1994-09-27 |
Attorney, Agent or Firm:
Masaki Yamakawa