| 摘要 |
PROBLEM TO BE SOLVED: To provide an MSK demodulation circuit capable of being correctly demodulated even for an MSK signal, in which the frequency of a transmit data is changed. SOLUTION: A clock synchronizing with the transmitted data by a PLL means 1 is oscillated to an input MSK signal, and the one-bit period of the transmit data is measured by a space measuring means 2 to the oscillated clock. The MSk signal is delayed for one-bit period of the transmit data by a delay means 3 on the basis of the result of the measurement of the space measuring means 2. The MSK signal is demodulated by a gate means 4, a shift register 5 and a decision means 6 by using the input MSK signal and the MSK sigal delayed by the delay means 3. COPYRIGHT: (C)2004,JPO
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