| 摘要 |
PROBLEM TO BE SOLVED: To provide a detection circuit that employs even a synthesizer unable, to correct high-speed frequency so as to establish the synchronization through the detection of a synchronous word by one frame at a low cost by solving a problem of a high cost in the conventional detection circuit, because a synthesizer able to attain high-speed frequency correction for the frequency correction through AFC control from the reception of a preamble until reception of the synchronous word, and to provide a mobile wireless equipment. SOLUTION: The detection circuit and the mobile wireless equipment are configured, such that a frequency shift quantity device 18' detects the frequency shift between a received frequency and an oscillated frequency in a frequency synthesizer on the basis of a preamble pattern, detects an angle shift quantity in a delay detection output from the frequency shift quantity and outputs it to an angle correction section 20, and the angle correction section 20 corrects the delay detection output from a phase difference calculation section 16, to cancel the angle shift quantity and provides an output of the result to a discrimination section 19, which provides demodulated data. |
