Plzzahut
Newbie
Could someone explain the difference between Active Z and Z parameters(also 2 S parameters)
In my design, two lumped ports activate together in order to generate an E field and those 2 ports have a phase delay.
so what if I want those 2 ports' input impedance to be 50 ohms in oder to use coaxial cable to feed in.
I want to let the device work at 100Mhz, if I look active Z(1:1) and S(1:1) parameters, all stuff looks ok.
But if I use Z and S parameters, The Z(1:1) goes to 70 ohms and the impedance peak is at 120Mhz.
I'm so confused.
Shall I look at Active Z?
In my design, two lumped ports activate together in order to generate an E field and those 2 ports have a phase delay.
so what if I want those 2 ports' input impedance to be 50 ohms in oder to use coaxial cable to feed in.
I want to let the device work at 100Mhz, if I look active Z(1:1) and S(1:1) parameters, all stuff looks ok.
But if I use Z and S parameters, The Z(1:1) goes to 70 ohms and the impedance peak is at 120Mhz.
I'm so confused.
Shall I look at Active Z?