Invention Grant
- Patent Title: Design structure for a phase locked loop with stabilized dynamic response
- Patent Title (中): 具有稳定动态响应的锁相环的设计结构
-
Application No.: US12128678Application Date: 2008-05-29
-
Publication No.: US07958469B2Publication Date: 2011-06-07
- Inventor: David W. Boerstler , Eskinder Hailu , Jieming Qi
- Applicant: David W. Boerstler , Eskinder Hailu , Jieming Qi
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Stephen J. Walder, Jr.; Matthew B. Talpis
- Main IPC: G06F17/50
- IPC: G06F17/50 ; H03L7/085

Abstract:
A design structure for a hybrid phase locked loop (PLL) circuit that obtains stabilized dynamic response and independent adjustment of damping factor and loop bandwidth is provided. The hybrid PLL circuit of the illustrative embodiments includes the resistance/capacitance (RC) filter elements of a conventional RC PLL and the feed-forward path from the output of the phase frequency detector to the voltage controlled oscillator (VCO). The hybrid PLL essentially enhances the performance of the conventional feed-forward PLL by providing the RC filter whose components can be weighted to provide a dynamic response that is significantly less sensitive to parameter variation and which allows loop bandwidth optimization without sacrificing damping.
Public/Granted literature
- US20090007047A1 Design Structure for a Phase Locked Loop with Stabilized Dynamic Response Public/Granted day:2009-01-01
Information query