Sample-and-hold phase detector for use in a phase locked loop
Patent 4864252 Issued on September 5, 1989. Estimated Expiration Date: 
September 26, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 26, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPhase detector having a 360 linear range for periodic and aperiodic input pulse streams Digital phase comparison apparatus Patent #: 4184122 InventorAssigneeApplicationNo. 07/249475 filed on 09/26/1988US Classes:331/1A, AFC with logic elements327/41, With synchronous detection331/14, With intermittent comparison controls331/17, Particular error voltage control (e.g., intergrating network)331/25, Signal or phase comparator455/263Discriminator or detectorExaminersPrimary: Mis, DavidAttorney, Agent or FirmInternational ClassesH03L 7/08 (20060101)H03L 7/089 (20060101) H03L 7/091 (20060101) H03D 13/00 (20060101) AbstractA sample-and-hold type phase detector provides a linear positive or negative going ramp signal that may be used to linearly control a phase-locked loop over approximately a &#b1;360° phase range. | |
