| 摘要 |
PURPOSE:To eliminate the need for the maintenance of a frequency of a radio base station with high precision to improve the S/N and to ensure a large service area with an inexpensive transmitter. CONSTITUTION:A data processing circuit 11 of a radio base station receives same input data to implement delay processing and jitter processing or the like, gives the same transmission data to an FSK modulator 12, and outputs offset signals whose frequency is twice that of the same transmission data and whose phases differ from each other. A power supply panel 15 outputs a control voltage based on the offset signal. A power amplifier 13 power- amplifies an output of the FSK modulator 12 and amplitude-modulates the said output based on the control voltage and the resulting output is sent. |
