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transformer coupling co efficient in agilent ADS momentum

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kjha

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hi,

I am trying to make a transformer in ADS momentum..
i am using following equations to calculate L and Q of individual inductors
L = imag(1/y(1,1))/(2*pi*f)
Q = imag(y(1,1))/real(y(1,1))

replace y(1,1) by y(2,2) for second inductor

Qustion:(1) does this formula hold true when both inductors are modeled as differential inductors??

(2) how do i calculate coupling co-efficient k of the transformer??

thanks
 


@bigboss/Zander_ua: can any of you tell me how to assign a ground to a transformer in ADS momentum?? if i assign port 1 to one end of primary and ground the other end, ie not make a differential circuit, the analysis of equivalent circuit becomes very easy..i'll assign port 2 to one end of secondary and ground the other end of secondary too..thanks in advance..
 

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