| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that phase synchronization cannot accurately be obtained because the accuracy of the phase error Δθ is largely affected by Δf accuracy when the scale of a digital frequency phase detection circuit becomes large to make TFFT large because data fetch time in the digital frequency phase detection circuit is used in an arithmetic operation in a phase rotation prediction circuit, in a conventional frequency phase error analyzer. SOLUTION: A phase error can be calculated without using the data fetch time TFFT in such a manner that a sequence inverting circuit inverts the sequence with respect to data inputted to the digital frequency phase detection circuit. |
