標題: PHASE-LOCKED LOOP FREQUENCY SYNTHESIZER AND LOOP LOCKING METHOD THEREOF
作者: Chen Wei Zen
Lee Yen-Wei
公開日期: 21-Jul-2011
摘要: A phase-locked loop frequency synthesizer and a loop locking method thereof are provided. The phase-locked loop frequency synthesizer includes a reference route sigma-delta modulator feedback circuit, a reference phase integration circuit coupled to the output end of the reference route sigma-delta modulator feedback circuit, a phase/frequency detector coupled to the output ends of the reference and feedback phase integration circuit, a loop filter coupled to the output end of the phase/frequency detector and the input end of the reference route sigma-delta modulator feedback circuit, an oscillator coupled to the output end of the loop filter, and a feedback phase integration circuit coupled to the output end of the oscillator and the input end of the phase/frequency detector. In the phase-locked loop frequency synthesizer, the oscillator generates corresponding frequency output signals which yield the advantages of resisting noise signals, enhancing resolution, and facilitating integration.
官方說明文件#: H03L007/00
URI: http://hdl.handle.net/11536/105282
專利國: USA
專利號碼: 20110175682
Appears in Collections:Patents


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