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本文对5—200M Hz宽带相位噪声测试设备中所需的宽带移相器进行了分析,提出了一种电路简单、性能优良的宽带移相器。理论分析和实验结果表明,该移相器能给出5—200M Hz频带内0—180°的相移,从而实现内接移相器进行相位噪声和信噪比的测量.
This paper analyzes the broadband phase shifter required in the 5-200 MHz wideband phase noise test equipment and proposes a broadband phase shifter with simple circuit and excellent performance. The theoretical analysis and experimental results show that the phase shifter can give a phase shift of 0-180 ° in the frequency range of 5-200 MHz and achieve the phase noise and signal-to-noise ratio measurement of the internal phase shifter.