Invention Grant
- Patent Title: Phase locked loop and phase-frequency detector
- Patent Title (中): 锁相环和相位频率检测器
-
Application No.: US12898392Application Date: 2010-10-05
-
Publication No.: US08207792B2Publication Date: 2012-06-26
- Inventor: Jri Lee , Ming-Chung Liu
- Applicant: Jri Lee , Ming-Chung Liu
- Applicant Address: TW Hsin-Chu TW Taipei
- Assignee: Mediatek Inc.,National Taiwan University
- Current Assignee: Mediatek Inc.,National Taiwan University
- Current Assignee Address: TW Hsin-Chu TW Taipei
- Agency: Thomas|Kayden
- Main IPC: H03L7/087
- IPC: H03L7/087 ; H03D3/00
Abstract:
The phase-frequency detector (PFD) includes a frequency detector (FD) arranged to receive orthogonal signal pairs of a reference signal and a feedback signal and estimate a frequency error between a reference signal and a feedback signal; a FD voltage-to-current converter arranged to convert the frequency error into a first current; a phase detector (PD) arranged to receive the orthogonal signal pairs and estimate a phase error between the reference signal and the feedback signal, and a PD voltage-to-current converter arranged to convert the phase error into a second current.
Public/Granted literature
- US20110018597A1 Phase Locked Loop and Phase-Frequency Detector Public/Granted day:2011-01-27
Information query
IPC分类:
