发明名称 |
FREQUENCY MODULATOR-VARIABLE FREQUENCY GENERATOR |
摘要 |
A frequency modulator/variable frequency source employs an electronically programmable divider in the feedback path of a phase locked loop. The phase locked loop is stabilized by the output of a fixed frequency oscillator. The effective divider modulus is directly determined by a variable duty cycle signal which alternately switches the divider between two characteristic count capacities with relative dwell periods determined by a modulating potential.
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申请公布号 |
US3805192(A) |
申请公布日期 |
1974.04.16 |
申请号 |
US19720279280 |
申请日期 |
1972.08.09 |
申请人 |
ELECTRONIC COMMUNICATIONS INC,US |
发明人 |
OCNASCHEK F,US;WADE E,US |
分类号 |
H03C3/09;H03L7/197;(IPC1-7):H03C3/02;H03B3/04 |
主分类号 |
H03C3/09 |
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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