Helloo everyone
I am a student doing Electronics, in my final year, my project is about designing an impedance matching circuit and a feed network for next gen communications systems
I am using the ADS suite, and I want to start with designing the impedance matching circuit
Now, i have a slight idea of what I am going to do:
My circuit needs to work with different frequencies. 3g, wifi, and 4g, and it has to match the impedance at these different frequencies using switches
The questions I cant find answers for are:
1. I realize the impedance of the antenna changes when the frequency changes. Is there a formula that relates the antenna's impedance to frequency ?
2. Are all the antenna modeled in the same way, i mean in terms of impedance and size, or is every antenna different?
I mean in my case, is there a standard antenna model that i will use, or do i need to speak with my supervisor and he picks a model for me ?
3. I would really appreciate it if someone showed me a link or a tutorial about how I can design a an impedance matching circuit in ADS.. I do understand the concept of the matching circuit. But i looked at ADS, and I cant find the components i am looking for
Like... for example. An antenna..
also, please, how do i simulate the antenna's impedance using ADS while changing frequency ?
I did look at google, and I looked at ads webpage. For a start I have no idea what i am loooking for because I never did Rf before
and second, the stuff i found is just not what I am looking for
Thank you for reading