rashford
Newbie
Hello guys, I'm trying to calculate port impedance of the antipodal vivaldi antenna(AVA).
But as you know, AVA has metal-substrate-metal structure.
Each metal plates are for radiating, but at the balun stage, the one has a purpose for ground the voltage.
So, I have difficulty on setting the waveport for the antenna.
For example, we can set waveport for microstrip structure touch the ground plate. Because it has larger size than the stripline.
But my antenna ground plate has little bit larger size than top metal plate, so if I set the waveport touching the ground plate, it will ignore fringing field between the plates.
If someone has knowhows how to set the waveport well for the antipodal vivaldi antenna structure, plz help me.
But as you know, AVA has metal-substrate-metal structure.
Each metal plates are for radiating, but at the balun stage, the one has a purpose for ground the voltage.
So, I have difficulty on setting the waveport for the antenna.
For example, we can set waveport for microstrip structure touch the ground plate. Because it has larger size than the stripline.
But my antenna ground plate has little bit larger size than top metal plate, so if I set the waveport touching the ground plate, it will ignore fringing field between the plates.
If someone has knowhows how to set the waveport well for the antipodal vivaldi antenna structure, plz help me.