发明名称 |
MICROWAVE SYNTHESIZER WITH FRACTIONAL DIVISION |
摘要 |
A synthesizer including a voltage-controlled oscillator, a phase-frequency comparator, a variable-rank frequency divider, a command device to control the oscillation frequency of the voltage-controlled oscillator on a frequency which is a multiple of the frequency of the reference signal as a function of the rank of division of the variable-rank frequency divider. The phase-frequency comparator circuit sends a first series and a second series of pulses as a function of the phase advance or delay respectively of the signals applied to its first and second inputs, to charge or discharge an integration capacitor and provide a signal commanding the advance or delay of the frequency and phase of the oscillator as a function of the voltage developed at the terminals of the capacitor.
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申请公布号 |
US5122762(A) |
申请公布日期 |
1992.06.16 |
申请号 |
US19900630890 |
申请日期 |
1990.12.20 |
申请人 |
THOMSON-CSF |
发明人 |
MOLINA, JACQUES;ROULLET, ANDRE;LA ROSA, JEAN-PIERRE |
分类号 |
H03L7/089;H03L7/095;H03L7/197 |
主分类号 |
H03L7/089 |
代理机构 |
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代理人 |
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地址 |
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