alard
Member level 4
multistage wilkinson splitter
Hello
I'm now designing a 5 stages 'cascade' Wilkinson power divider (bandwidth 0.5GHz -6.5 GHz) on RF-60A (Er=6.15, H=1.542mm)according to "A general design formula of multi-section power divider based on singly terminated filter design theory".
With the value I calculated according to the specifications in my case, I can have exactly the same perfect performance in ADS schematic simulation as in the paper. (The isolation resistors I used to simulate is the KOA 0603 model from modelithics) However, when I generate the layout and simulate in Momentum, the isolation(S32) goes very bad from -20dB to now only around -7dB while the insertion loss and return loss still keep the same.
I've been stucked here for quite long time. Anybody, pls help me
BR
kevin
Hello
I'm now designing a 5 stages 'cascade' Wilkinson power divider (bandwidth 0.5GHz -6.5 GHz) on RF-60A (Er=6.15, H=1.542mm)according to "A general design formula of multi-section power divider based on singly terminated filter design theory".
With the value I calculated according to the specifications in my case, I can have exactly the same perfect performance in ADS schematic simulation as in the paper. (The isolation resistors I used to simulate is the KOA 0603 model from modelithics) However, when I generate the layout and simulate in Momentum, the isolation(S32) goes very bad from -20dB to now only around -7dB while the insertion loss and return loss still keep the same.
I've been stucked here for quite long time. Anybody, pls help me
BR
kevin