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The status of phase differences in the least common multiple period between two signals with various frequencies has obvious regularity. As phase differences are arrayed in accordance with the order from small to large, differences of adjacent phase differences are fixed to the quantified phase shift resolution (QPSR) which can be calculated by frequencies of two signals. When frequencies of two signals...
We have researched, developed and applied a series of measuring and testing technologies in the mass production and exploitation of precision frequency control devices including OCXO, TCXO, VCXO, PLL and clock modules. They have shown a key function to the performance improvement and quality guarantee of the products. In this paper we shall present turn point regulation technology and equipment of...
For higher phase lock precision, a new principle, the equivalent phase comparison frequency (EPCF) between signals in different frequencies, is presented in this paper. Using the new PLL based on EPCF, higher phase comparison and phase lock precision can be achieved with simple electrical circuits. Evidently, this principle is based on the analysis of time and phase, rather than on frequency simply...
Equivalent phase comparison frequency (EPCF) is an important parameter between two frequency signals, and it shows their phase correlation. It is much higher than anyone of the two frequencies, and its period is equal to the group phase shift corresponding two most adjacent phase coincidences between the signals. For example, to two frequency signals with several MHz frequency, their EPCF can be several...
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