微波ＭＣＭ电路由于频率高的特点使得时域电路模拟较为困难，一般必须使用大型计算机进行计算．针对这种特点提出一种有效的模拟方法——Ｙ参数综合法，即用微波网络理论对电路进行等效或使用辅助端口对电路进行频域分析，使模拟过程简化，计算量减小，并且更加适合计算机模拟．由于提高了计算效率，ＰＣ机即可胜任．计算实例表明，其精确度可满足工程要求 Microwave MCM circuit due to the characteristics of high frequency makes time-domain circuit simulation is more difficult, generally must use a large computer to calculate. Aiming at this characteristic, an effective simulation method - the Y parameter synthesis method is proposed, that is to use the microwave network theory to perform equivalent circuit or auxiliary port to analyze the circuit in frequency domain, which simplifies the simulation process and reduces the computation load. More suitable for computer simulation. Due to increased computational efficiency, the PC can be competent. The calculation example shows that its accuracy can meet the engineering requirements