本文介绍一种新型的四端口微波网络分析系统。该系统需要的微波部件比六端口测量系统少,而且即使中等质量的部件也能达到相当满意的精度。配以一台微机和微机控制的扫频仪等,就能成为一台自动网络分析仪。该系统可以推广到毫米波段。 This article describes a new type of four-port microwave network analysis system. The system requires fewer microwave components than a six-port measurement system and achieves reasonably satisfactory accuracy even with medium-quality components. With a computer and computer-controlled scanner, etc., can become an automatic network analyzer. The system can be extended to the millimeter wave band.