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公开(公告)号:US4675618A
公开(公告)日:1987-06-23
申请号:US871963
申请日:1986-06-09
申请人: Richard A. Cross
发明人: Richard A. Cross
IPC分类号: H03C3/08
CPC分类号: H03C3/08
摘要: A system for frequency modulation by a signal, the system including an oscillator having a known linearity distortion, a circuit for selecting one from a plurality of predetermined constants, a circuit for operating on the signal with the selected constant, and a digital to analog converter in an embodiment where the signal is digital, for converting the signal having been operated on to an analog signal for modulating the oscillator is disclosed. One embodiment includes a circuit for determining the magnitude of the input signal.
摘要翻译: 一种用于通过信号进行频率调制的系统,该系统包括具有已知线性失真的振荡器,用于从多个预定常数中选择一个振荡器的电路,用于对具有选定常数的信号进行操作的电路以及数模转换器 在信号为数字的实施例中,公开了用于将已被操作的信号转换为用于调制振荡器的模拟信号的实施例。 一个实施例包括用于确定输入信号的幅度的电路。
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公开(公告)号:US721181A
公开(公告)日:1903-02-24
申请号:US1902131588
申请日:1902-11-15
申请人: RICHARD A CROSS , ROBERT G CROSS , HANBY EDWARD
发明人: HANBY EDWARD
CPC分类号: F16L33/02 , Y10T24/1412 , Y10T24/3918 , Y10T24/392
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公开(公告)号:US4694263A
公开(公告)日:1987-09-15
申请号:US872074
申请日:1986-06-09
申请人: Richard A. Cross
发明人: Richard A. Cross
IPC分类号: G01R23/15
CPC分类号: G01R23/15
摘要: A method and apparatus for monitoring a frequency modulated signal including harmonically mixing the modulated signal with a significantly lower reference frequency, dividing the mixed signal, filtering out the reference frequency, rectifying and integrating the filtered frequency and then testing the integrated signal is disclosed. A correction signal responsive to the integrated signal is provided in one arrangement.
摘要翻译: 一种用于监测调频信号的方法和装置,包括将调制信号与显着较低的参考频率进行谐波混合,分频混频信号,滤除参考频率,校正和积分滤波后的频率,然后测试积分信号。 在一种布置中提供响应于积分信号的校正信号。
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