| 摘要 |
A battery is provided with a normal output voltage in the region of 3.6 to 5 V. The radio device has a capacitor parallel switched to the transmitter for buffering. The positive battery output voltage is up transformed to e.g. 30 V to charge the capacitor. The battery current is only slightly pulsed. The capacitor is charged and discharged during the transmission process using an inductor. The capacitor voltage sinks to e.g. 10 V. so the capacitor voltage is first raised w.r.t. the battery output voltage and then dropped to the required supply voltage of the transmitter stage. |
