Bceause of its specific characteristics of small size and wide band width, the double-Y or YY junction has been widely used in the design of stripline-junction circulator.
由于双y结具有尺寸小。频带宽的独特优点，目前已广泛用于带线结环行器设计。
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This paper describes the microstrip Y-junction circulator of X-band Doppler Radar, its working principle, engineering design and experimental results.