Invention Grant
US07990227B2 Phased-locked loop (PLL) synthesizer-synthesizer with improved voltage-controlled oscillator (VCO) pre-tuning
有权
具有改进的压控振荡器（VCO）预调谐的锁相环（PLL）合成器合成器
- Patent Title: Phased-locked loop (PLL) synthesizer-synthesizer with improved voltage-controlled oscillator (VCO) pre-tuning
- Patent Title (中): 具有改进的压控振荡器（VCO）预调谐的锁相环（PLL）合成器合成器
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Application No.: US11816076Application Date: 2006-02-02
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Publication No.: US07990227B2Publication Date: 2011-08-02
- Inventor: Alois Schechinger
- Applicant: Alois Schechinger
- Applicant Address: DE Munich
- Assignee: Rohde & Schwarz GmbH & Co. KG
- Current Assignee: Rohde & Schwarz GmbH & Co. KG
- Current Assignee Address: DE Munich
- Agency: Ditthavong Mori & Steiner, P.C.
- Priority: DE102005006345 20050211
- International Application: PCT/EP2006/000922 WO 20060202
- International Announcement: WO2006/084627 WO 20060817
- Main IPC: H03B1/00
- IPC: H03B1/00
Abstract:
An apparatus for providing Phased-Locked Loop (PLL) synthesis comprises a phase detector, at least one switchable filter, an oscillator controlled by a control voltage (uPLL) and a divider. The controlled oscillator has two inputs, wherein the control voltage (uPLL) is coupled to a first input, and a selection voltage (uSET) for rough frequency adjustment is coupled to a second input. Both voltages establish the frequency of the oscillator.
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