i am not sure about how to simulate(s-parameter) radial stub using ADS2003.how to interpret s-parameter for radial stub.i am working on 2.4GHz.the radial stub is used together with the high impedance line(biasing transistor).could anyone help.
i think the expected s parameters will be like loss passfilter , coz the radial stub acts as shut capacitor to ground , and the high impedance line act as inductance "RFC"
this structure is always used to feed the DC voltage to the active device and eleminate any RF signal from pentrating to DC circuit ,