使用调制技术的数据通信系统需要良好的低频响应，是对基于PLL频率合成器的数据通信系统的重要要求。
Data communication systems that employ modulation techniques requiring good low-frequency response place unique demands on PLL-based frequency synthesizers.
在射频电路方面，提出了频率合成器和调制解调器设计方案，并通过测试证明了该方案的可行性。
In the aspect of RF circuits, the scheme of frequency synthesizer and modem is proposed, and the feasibility of the scheme is verified by practical test.
芯片内置频率合成器、功率放大器、晶体振荡器和调制器等功能模块。
The transceiver consists of a fully integrated frequency synthesizer, a power amplifier, a crystal oscillator and a modulator.
芯片内置频率合成器、功率放大器、晶体振荡器和调制器等功能模块。
The transceiver consists of a fully integrated frequency synthesizer, a power amplifier, a crystal oscillator and a modulator.
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