Invention Grant
- Patent Title: Phase locked loop having reduced inherent noise
- Patent Title (中): 锁相环具有降低的固有噪声
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Application No.: US11238331Application Date: 2005-09-26
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Publication No.: US07693247B2Publication Date: 2010-04-06
- Inventor: Peter Gregorius , Martin Streibl , Thomas Rickes
- Applicant: Peter Gregorius , Martin Streibl , Thomas Rickes
- Applicant Address: DE Munich
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Munich
- Agency: Patterson & Sheridan, L.L.P.
- Main IPC: H03D3/24
- IPC: H03D3/24

Abstract:
A phase locked loop having reduced inherent noise is provided. The phase locked loop comprises a controlled oscillator for outputting a periodic output signal as a result of a control signal; a feedback unit for providing at least two periodic feedback signals having a constant phase shift to each other and each depending on the output signal; a phase/frequency detector for providing difference signals each depending on a periodic input signal and at least one of the feedback signals; and a control circuit for providing the control signal to the controlled oscillator depending on the difference signals.
Public/Granted literature
- US20070071156A1 Phase locked loop having reduced inherent noise Public/Granted day:2007-03-29
Information query
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