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81. 发明授权

US4310804A Input activated frequency synthesizer 失效
标题翻译：输入激活频率合成器
公开(公告)号：US4310804A
公开(公告)日：1982-01-12
申请号：US36130
申请日：1979-05-04
申请人： Donald C. Ryon
发明人： Donald C. Ryon
IPC分类号： H03L7/14 , H03L7/16
CPC分类号： H03L7/14 , H03L7/16
摘要： A frequency synthesizer is controlled by the frequency of an input signal. The input signal is sampled and, either during or at the end of the input signal, the output signal is locked on the frequency of the input signal. Octavely related harmonics are combined to provide tone color.
摘要翻译：频率合成器由输入信号的频率控制。输入信号被采样，并且在输入信号期间或结束时，输出信号被锁定在输入信号的频率上。组合八度相关谐波以提供色调。

82. 发明授权

US4259644A Local oscillator for multi-band reception having single crystal reference oscillator 失效
标题翻译：具有单晶参考振荡器的多频带接收本地振荡器
公开(公告)号：US4259644A
公开(公告)日：1981-03-31
申请号：US007604
申请日：1979-01-29
申请人： Takashi Iimura
发明人： Takashi Iimura
IPC分类号： H03J5/24 , H03L7/18 , H03L7/185 , H04B1/26 , H04B1/40 , H03L7/16
CPC分类号： H04B1/26 , H03J5/242
摘要： A local oscillator having a variable frequency oscillator and a carrier frequency oscillator for use in communication systems that transmit and/or receive signals on multiple frequency bands, one crystal reference oscillator; a converter circuit for mixing the outputs of at least the variable frequency oscillator and the carrier frequency oscillator to produce an output having a frequency corresponding to the receiving frequency and a phase-locked loop circuit including a plurality of voltage control oscillators corresponding to the number of receiving frequency bands; a mixing circuit for mixing the output of a predetermined one of the voltage control oscillators corresponding to a predetermined one of the frequency bands with the output of the converter circuit to produce an output of fixed frequency corresponding to the one frequency band; a programmable counter that divides the output of the mixing circuit in accordance with a frequency dividing ratio corresponding to the one frequency band; and a phase comparator for comparing the phase of the output signal from the programmable counter with that of the output from the one crystal reference oscillator to provide a control signal for the one voltage control oscillator whereby the one crystal reference oscillator may be employed with all of the voltage control oscillators.
摘要翻译：一种具有可变频率振荡器和载波频率振荡器的本地振荡器，用于在多个频带上发送和/或接收信号的通信系统中，一个晶体参考振荡器; 转换器电路，用于混合至少可变频率振荡器和载波频率振荡器的输出，以产生具有与接收频率相对应的频率的输出;以及锁相环电路，该锁相环电路包括多个对应于接收频带; 混合电路，用于将对应于所述频带中的预定频率的预定一个所述电压控制振荡器的输出与所述转换器电路的输出相混合，以产生对应于所述一个频带的固定频率的输出; 可编程计数器，其根据与一个频带对应的分频比对混频电路的输出进行分频; 以及相位比较器，用于将来自可编程计数器的输出信号的相位与来自一个晶体参考振荡器的输出的相位进行比较，以提供用于所述一个电压控制振荡器的控制信号，由此可以使用所述一个晶体参考振荡器电压控制振荡器。

83. 发明授权

US4198604A Heterodyne phase lock system 失效
标题翻译：异步锁相系统
公开(公告)号：US4198604A
公开(公告)日：1980-04-15
申请号：US804828
申请日：1977-06-08
申请人： Steven N. Holdaway
发明人： Steven N. Holdaway
IPC分类号： H03L7/16 , H03B21/02 , H03D7/16 , H03J5/02 , H03L7/06 , H03L7/08 , H03L7/20 , H04B1/26 , H03D1/16
CPC分类号： H03D7/16 , H03J5/0245 , H03L7/20 , H03B21/02 , H03D7/163 , H03D7/165
摘要： A heterodyne phase lock system is disclosed having a plurality of oscillator circuits, a similar plurality of heterodyne (mixer-filter) circuits representing an input circuit, and a similar plurality of heterodyne circuits representing a control circuit, at least one of the oscillator circuits being a voltage controlled oscillator (VCO) circuit. The heterodyne circuits of the input circuit are cascaded, i.e., linked each to the other, successively, and the heterodyne circuits of the control circuit are likewise cascaded. Each oscillator is linked to a pair of heterodyne circuits, i.e., to one heterodyne circuit in the input circuit and to one heterodyne circuit in the control circuit, and applies a common output signal to said pair of heterodyne circuits. The control circuit includes a phase lock circuit, and is responsive to an applied reference signal for adjusting the output of the VCO and correcting for or substantially cancelling frequency drift, residual FM, and phase noise introduced into the system by the oscillators.This manner of linking oscillators to both heterodyne input and control circuits in a system so as to be able to correct, by adjusting a single oscillator, for frequency drift, residual FM, and phase noise from all of the oscillators in the system, is applicable to receiver and generator type systems alike. The system also includes an offset oscillator for tuning the system.
摘要翻译：公开了一种外差相锁系统，其具有多个振荡器电路，表示输入电路的类似多个外差（混频器 - 滤波器）电路和表示控制电路的类似多个外差电路，至少一个振荡器电路是压控振荡器（VCO）电路。输入电路的外差电路被级联，即逐个连接到另一个，并且控制电路的外差电路也是级联的。每个振荡器连接到一对外差电路，即输入电路中的一个外差电路和控制电路中的一个外差电路，并将公共输出信号施加到所述一对外差电路。控制电路包括锁相电路，并且响应于所施加的基准信号用于调节VCO的输出，并校正或基本上消除由振荡器引入系统的频率漂移，残余FM和相位噪声。将振荡器连接到系统中的外差输入和控制电路的这种方式，以便能够通过调整单个振荡器来校正来自系统中所有振荡器的频率漂移，残余FM和相位噪声的校正到接收机和发电机类型系统。该系统还包括用于调谐系统的偏移振荡器。

84. 发明授权

US3852682A Oscillation generators 失效
标题翻译：振荡发电机
公开(公告)号：US3852682A
公开(公告)日：1974-12-03
申请号：US37262673
申请日：1973-06-22
申请人： MARCONI INSTRUMENTS LTD
发明人： DAWE C , MIDDLETON J
IPC分类号： H03L7/12 , H03L7/16 , H03B3/04
CPC分类号： H03L7/16 , H03L7/12
摘要： An oscillation generator in which a tunable oscillator is locked onto the sum of or difference between a reference frequency and an off-set frequency by comparing the oscillator output first with the reference and then comparing the result of the first comparison with the off-set frequency and in which the result of the first comparison is compared with the off-set frequency phase shifted by 90* the result of this last comparison being used to prevent the oscillator from locking onto the sum when the difference is required or vice-versa.
摘要翻译：一种振荡发生器，其中可调谐振荡器通过将振荡器输出首先与参考值进行比较，然后将第一比较的结果与偏移频率进行比较来锁定到参考频率和偏移频率之和的或之间将第一次比较的结果与偏移90度的偏移频率相位进行比较，最后一次比较的结果用于防止当需要该差异时振荡器锁定到和上，反之亦然。

85. 发明授权

US3309619A Phase-locked frequency divider circuit 失效
标题翻译：锁相分频电路
公开(公告)号：US3309619A
公开(公告)日：1967-03-14
申请号：US39971764
申请日：1964-09-28
申请人： SIEMENS AG
发明人： PETER SCHUCHT
IPC分类号： H03L7/16 , H03L7/20
CPC分类号： H03L7/16 , H03L7/20

86. 发明授权

US3247465A Frequency regulation circuit with sweep circuit 失效
标题翻译：频率调节电路采用扫频电路
公开(公告)号：US3247465A
公开(公告)日：1966-04-19
申请号：US14055861
申请日：1961-09-25
申请人： SIEMENS AG
发明人： PETER SCHUCHT
IPC分类号： H03J7/10 , H03L7/12 , H03L7/16
CPC分类号： H03L7/16 , H03J7/10 , H03L7/12

87. 发明授权

US3202936A Multifrequency generator having phase lock and automatic frequency control 失效
标题翻译：具有锁相和自动频率控制的多频发生器
公开(公告)号：US3202936A
公开(公告)日：1965-08-24
申请号：US16334661
申请日：1961-12-29
申请人： BELL TELEPHONE LABOR INC
发明人： WILLIAM KAMINSKI , SCHNEIDER HERBERT A
IPC分类号： H03L7/16
CPC分类号： H03L7/16

88. 发明授权

US2887581A Automatic tuning systems 失效
标题翻译：自动调谐系统
公开(公告)号：US2887581A
公开(公告)日：1959-05-19
申请号：US65738357
申请日：1957-05-06
申请人： MARCONI WIRELESS TELEGRAPH CO
发明人： THEODORE BROWN THOMAS
IPC分类号： H03L7/16
CPC分类号： H03L7/16

89. 发明授权

US2762922A Automatic frequency control 失效
公开(公告)号：US2762922A
公开(公告)日：1956-09-11
申请号：US41021954
申请日：1954-02-15
申请人： PYE LTD
发明人： LADISLAV LAX
IPC分类号： H03L7/02 , H03L7/16
CPC分类号： H03L7/02 , H03L7/16

90. 发明授权

US2492218A Harmonic generator 失效
公开(公告)号：US2492218A
公开(公告)日：1949-12-27
申请号：US68564046
申请日：1946-07-23
申请人： RADIO PATENTS CORP
发明人： GUSTAV GUANELLA
IPC分类号： H03B19/00 , H03L7/16
CPC分类号： H03B19/00 , H03L7/16

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