| 摘要 |
A portable, battery powered transmitter including a current control circuit for controlling the output power of the transmitter over a wide range of variations in battery voltage, rf input power and frequency, and ambient temperature. The transmitter includes an amplifier operative to receive a voltage from the current control circuit and to draw load current from the current control circuit. The load current drawn by the amplifier is limited by the current control circuit to a predetermined maximum value thereby to prolong the mission life of the battery source powering the transmitter.
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