| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless base station capable of minimizing a time when a wireless transmission / reception emits an illegitimate radio wave. <P>SOLUTION: An optoelectric conversion section 21 receives a transmission multiplex signal and converts an optical signal of the transmission multiplex signal into an electric signal, and a deserializer section 22 converts the electric signal into parallel data and extracts and recovers a clock signal synchronously with serial data. A distribution section 32 distributes the recovered clock signal into two. A PLL section 33 generates a reference signal on the basis of one of the two-distributed recovered clock signals. A narrow pass bandwidth BPF section 35 applies band limit to the other of the two-distributed recovered clock signals and a detection section 36 converts the clock signal into a DC voltage. A comparison control section 37 applies comparison control to the received DC voltage with a preset reference voltage, and a wireless transmission processing section 24 applies ON / OFF control to a power supply supplied to a power amplifier section on the basis of a result of the comparison control. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
