| 摘要 |
PURPOSE:To attain intermittent operation while keeping a carrier output even at the time of high speed switching when an adjacent cell is monitored in a TDMA communication frame. CONSTITUTION:A PLL loop section 2 is provided with a loop filter 16 used exclusively at the time of channel synchronization of an adjacent cell and a loop filter changeover switch 20 selecting the loop filter 16 or a substantial loop filter 6. The charge of a capacitor 14 of the substantial loop filter 6 is kept constant by excluding the effect of dielectric absorption of the capacitor following charging/discharging at the time of changeover to the adjacent cell. Thus, the effect of power saving due to intermittent operation is improved. |
