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本文介绍了微波纸张湿度测试仪的整机方案,并着重介绍其中的信号处理电路,提出了利用门电路来提高使用微分器后本机的抗干扰能力和利用积分器来降低YIG微波扫频源及信号处理电路输入信号中的周期性波动的方法。
This paper introduces the whole scheme of the microwave paper humidity tester and focuses on the signal processing circuit. The door circuit is proposed to improve the anti-jamming capability of this machine after using the differentiator and the integrator to reduce the YIG microwave sweep source And the signal processing circuit input signal in the periodic fluctuations in the method.