Phase lock-loop frequency synthesizer
专利汇可以提供Phase lock-loop frequency synthesizer专利检索，专利查询，专利分析的服务。并且A phase lock-loop synthesizer having a coarse voltage adjustment loop, an error loop, and a phase comparison loop. The coarse voltage adjustment loop includes in series a phase lock-loop device, buffer, frequency discriminator, variable gain D.C. amplifier, sum and difference amplifiers. The error loop includes in series the phase lock-loop device, buffer, divide by N circuit, frequency discriminator, sum and difference amplifiers and variable gain D.C. amplifier. The phase comparison loop includes the phase lock-loop device, buffer, divide by N circuit, divide by 2 circuits and a clock. The phase lock-loop frequency synthesizer can select any one of many operating frequencies and automatically maintain the preselected frequency. The coarse adjustment loop functions to generate a control voltage to maintain the desired frequency from the synthesizer. The error voltage loop functions to detect and correct errors between the programmed frequency and the output frequency and to change the output frequency on demand. The phase comparison loop compares the output frequency with the standard frequency.，下面是Phase lock-loop frequency synthesizer专利的具体信息内容。
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