无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2015年
5期
46-49
,共4页
多端口网络%S 参数%等效电路模型%功分器%单元子网
多耑口網絡%S 參數%等效電路模型%功分器%單元子網
다단구망락%S 삼수%등효전로모형%공분기%단원자망
multiport network%S parameters%equivalent circuit model%power divider%unit subnet
采用微波网络的基本理论，推导出任意微波多端口互联网络 S 参数的计算公式，前提条件是要保证各单元子网连接的传输线特性阻抗相等。为了克服这个局限性，引入了已有的微带不连续性等效电路模型及理论，将阻抗不同的阶梯、直角拐角以及 T 型接头等部分也看作单元子网来处理，运用已有的等效电路模型提取对应的 S 参数，并依据推导出的S 参数公式运用 Matlab 软件编写算法程序计算出多端口互联网络的 S 参数。以功分器为例，算法程序计算结果与 IE3D 软件仿真结果吻合较好。
採用微波網絡的基本理論，推導齣任意微波多耑口互聯網絡 S 參數的計算公式，前提條件是要保證各單元子網連接的傳輸線特性阻抗相等。為瞭剋服這箇跼限性，引入瞭已有的微帶不連續性等效電路模型及理論，將阻抗不同的階梯、直角枴角以及 T 型接頭等部分也看作單元子網來處理，運用已有的等效電路模型提取對應的 S 參數，併依據推導齣的S 參數公式運用 Matlab 軟件編寫算法程序計算齣多耑口互聯網絡的 S 參數。以功分器為例，算法程序計算結果與 IE3D 軟件倣真結果吻閤較好。
채용미파망락적기본이론，추도출임의미파다단구호련망락 S 삼수적계산공식，전제조건시요보증각단원자망련접적전수선특성조항상등。위료극복저개국한성，인입료이유적미대불련속성등효전로모형급이론，장조항불동적계제、직각괴각이급 T 형접두등부분야간작단원자망래처리，운용이유적등효전로모형제취대응적 S 삼수，병의거추도출적S 삼수공식운용 Matlab 연건편사산법정서계산출다단구호련망락적 S 삼수。이공분기위례，산법정서계산결과여 IE3D 연건방진결과문합교호。
The expression formula of scattering parameters is derived for arbitrary microwave multiport interconnect network based on basic theory of microwave network.The precondition is to ensure that the equal characteristic impedance of interconnected transmis?sion lines for each unit subnet.This paper successfully transplantes the obtained discontinuity equivalent circuit model and theory of microstrip line to overcome the above limitation,which take step,right?angle bends,T?junctions of the different transmission lines impedance as unit subnet,and apply equivalent circuit model to obtain the scattering parameters of these unit subnet.Finally,the compu?ting program is written by matlab software to obtain the scattering parameters of multiport interconnect network based on the derived S parameters formula.To take power divider as an example,the algorithmic program results and IE3D simulation results are in good agree?ment.
