The new devices have twice the RF bandwidth of LDMOS, so that one power amplifier (PA) can support multiple operating frequencies.

新的设备具有的LDMOS的射频带宽的两倍，这样，一个功率放大器（PA）的可支持多个工作频率。

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This paper introduces the operating principle of two special digital audio processors, and then describes several circuit designs of high quality digital audio voltage amplifier.

首先介绍了两种专用数字音频处理器的性能特点和原理，然后阐述高品质数字音频电压放大器的几种电路设计方案。

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The fixed-bias amplifier maintains the bias at a more constant level, so it doesn't have the constantly changing operating point that varies with the output level.

固定偏置放大器偏置保持在一个更稳定的水平，因此它不具有不断变化的经营点，随产量水平。

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