采用放大器，就必须考虑接收机的烧毁电平和压缩电平，采取适当的措施进行校准，以便提高系统测量准确度。
Use amplifiers, receivers must consider the level and burned compression level to take appropriate measures calibration, in order to improve measurement accuracy of the system.
提出了基于频域校准相位抵消法的低中频接收机方案，同时分析其性能以及i, Q两路的相位、幅度误差带来的影响。
The performance of the plan and the effects caused by phase and amplitude error in I and Q path were given.
该装置应包含测量接收机各项主要功能，能够用于普通信号（函数）发生器的计量检定（校准）。
The apparatus shall be furnished with the main functions of a measurement receiver, and can be used for metering and calibrating ordinary signal (function) generators.
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