| 摘要 |
PROBLEM TO BE SOLVED: To prevent power supply voltage fluctuation in a PLL circuit in the portable radio equipment. SOLUTION: The radio equipment is provided with a secondary battery 22 being a power supply exclusive to a PLL circuit 8 in addition to a main battery 21 being a main power supply, a switch 26 that connects/disconnects the main battery 21 and the secondary battery 22, and the time applying a voltage from the main battery 21 to a radio signal amplifier demodulation section 2 or a transmission amplifier section 16 and the time to connect the switch 26 are controlled so as not to overlap with each other. |
