发明名称 |
CRYSTAL-OSCILLATOR-STABILIZED PHASE-LOCKED-LOOP-CIRCUIT. |
摘要 |
<p>A phase-locked loop circuit, having an oscillator controlled by a voltage related to the phase difference between a reference signal and a loop signal, is stabilized by a crystal oscillator. The voltage controlled oscillator signal is frequency-subtracted from the crystal oscillator signal frequency to provide an input signal to a frequency-arithmetic synthesizer which provides a loop signal to the phase detector for comparison with the coming reference signal. Use of a frequency-adder circuit between the voltage controlled oscillator and the frequency-subtractor, and receiving an addition frequency derived from the frequency-arithmetic synthesizing circuit, is utilized to decrease the loop gain and provide enhanced characteristics.</p> |
申请公布号 |
EP0041561(A4) |
申请公布日期 |
1982.04.29 |
申请号 |
EP19810900170 |
申请日期 |
1980.12.01 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
HACKERT, WILLIAM PAUL;HUGHES, WILLIAM CHESLEY |
分类号 |
H03L7/08;H03L7/10;H03L7/14;H03L7/185;(IPC1-7):H03L7/10;H03L7/18 |
主分类号 |
H03L7/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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