公开(公告)号：US3906388A

公开(公告)日：1975-09-16

申请号：US43727174

申请日：1974-01-28

申请人： SPERRY RAND CORP

发明人： JONES JOHN P ,  STIRLING RONALD C

IPC分类号： H03B21/04 ,  H03B21/02

CPC分类号： H03B21/04

摘要： An apparatus including means for providing at least four fixed internal frequency signals having four different values of frequency in which all of said frequencies are coupled into a first processor stage comprised of a single pole double throw switch controlled by a first input bit command signal for selecting either of two of said four frequencies for coupling into a first frequency mixer. A third frequency signal is also coupled into the first frequency mixer which provides a first difference frequency output signal that is coupled into a binary frequency divider. The divider output signal is then coupled along with a fourth frequency signal into a second frequency mixer which produces a second difference frequency output signal that is coupled into a third mixer in an output stage which also includes a second single pole double throw switch controlled by a second input bit command signal for selecting either of the same two of the four frequency signals to also be coupled into the third frequency mixer. The output signal produced by the third mixer is a discrete synthesizer frequency output signal selected from a range of frequency output signals in accordance with the input bit command signal. Additional identical processor stages may be added to provide smaller increments between the selectable discrete synthesizer frequency output signals.

摘要翻译： 一种装置，包括用于提供具有四个不同的频率值的至少四个固定内部频率信号的装置，其中所有所述频率都耦合到包括由第一输入位命令信号控制的单极双掷开关的第一处理器级中，用于选择 所述四个频率中的两个中的任一个用于耦合到第一混频器中。 第三频率信号也耦合到第一混频器中，第一混频器提供耦合到二进制分频器中的第一差分频率输出信号。 然后，分频器输出信号与第四频率信号一起耦合到第二混频器中，该第二频率混合器产生耦合到输出级中的第三混频器中的第二差分频率输出信号，该输出级还包括由第二混频器控制的第二单极双掷开关 第二输入比特命令信号，用于选择四个频率信号中相同的两个中的任一个也被耦合到第三混频器中。 由第三混频器产生的输出信号是根据输入位指令信号从频率输出信号的范围中选择的离散合成器频率输出信号。 可以添加额外的相同的处理器级，以在可选择的离散合成器频率输出信号之间提供较小的增量。

公开(公告)号：US3626315A

公开(公告)日：1971-12-07

申请号：US3626315D

申请日：1970-04-07

申请人： SPERRY RAND CORP

发明人： STIRLING RONALD C ,  BARNUM JOHN L

IPC分类号： H03B21/04 ,  H03B3/06 ,  H03B3/08 ,  H03B21/02

CPC分类号： H03B21/00 ,  H03B21/04

摘要： A signal source and harmonic signal selector for application in frequency-coherent signal generators or synthesizers and in precision radio communication systems features a novel frequency conversion process to obtain pluralities of selectable stable frequency signals from one source. A stable oscillator is employed to excite the desired plurality of signals in a harmonic comb generator. An injection oscillator, controlled by a selected unidirectional voltage level, is used as a filter to select a desired one of the array of harmonically related signals. Means are provided for purifying the spectrum of the selected output signal.