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时域脉冲源是时域超宽带雷达系统中的重要部件,时域脉冲天线大多采用对称形式,如果用非平衡高压脉冲源激励,难以实现很好的宽带匹配。为此设计了一种新的电路形式,采用平衡输出的Marx电路级联,解决了脉冲源高幅度和平衡输出不能兼顾的问题。利用与对称天线进行的纳秒级脉冲收发实验验证了该电路的良好性能。
The time-domain pulse source is an important component in the time-domain ultra-wideband radar system. Most of the time-domain pulse antennas adopt the symmetrical form. It is difficult to achieve good broadband matching if excited by an unbalanced high-voltage pulse source. For this reason, a new circuit is designed. The cascaded Marx circuit with balanced output solves the problem that the high amplitude and balanced output of the pulse source can not be balanced. The nanosecond pulse transceiver with a symmetrical antenna was used to verify the good performance of this circuit.