impedence of microstrip antenna

[zxcasd]

hello ,
im working on 2.4 Ghz microstrip antenna how i can calculate impedence of microstrip antenna so that i can match its impedence with microstrip line using quater wave transformer
plz help me :|

 

[mauloftin]

Hi,

follow this



I hope, that I helped you

Added after 2 minutes:

exactly:

The Txline calculator available freely on AWR website...
https://web.awrcorp.com/Usa/Products/Optional-Products/TX-Line/

and

1) find impedance your microstrip antenna - easy, set right colum "Physical Cahrakteristic" and click left left arrow - you have impedance Zm

2) calculate Zx = √(Zm*50), this is impedance transformer

3) in left colum set Zx, electical length is 90 deg - click right arrow and you have design λ/4 transformer

4) set left colum 50 Ω and you have feed. It this in this case the length is
not important, you can have it 50 mm or 50 cm or 4.35 km (if you have loss free material)

thats all, do you undestand me ? if not, give me question

 

[zxcasd]

thanks mauloftin ..........for the guidline provided by u.......

but one thing more HOW TO CALCULATE THE IMPEDENCE OF MICROSTRIP ANTENNA?

 

[mikekan]

in order to calculate the impedence of microstrip antenna, you should simulate the S-parameter, and then here is an equation for Zant:

Zant = Zo*(1+S11)/(1-S11)

 

[mauloftin]

thanks mauloftin ..........for the guidline provided by u.......

but one thing more HOW TO CALCULATE THE IMPEDENCE OF MICROSTRIP ANTENNA?

Hi,

can you tell me, what is shape of your antenna ? Is it rectangular ? Because if yes, you can use:

"1) find impedance your microstrip antenna - easy, set right colum "Physical Cahrakteristic" and click left left arrow - you have impedance Zm"

but if you need mathematic formula, follow: **broken link removed**

but I think, the TXLine is better

 

[zxcasd]

hi moluftin........
yes i m having rectangular patch ...............
and did what u suggested and got good results
thank u..........

Added after 5 minutes:

thanks mikekan.for posting reply and ur help..........

 

[mauloftin]

hi moluftin........
yes i m having rectangular patch ...............
and did what u suggested and got good results
thank u..........

Added after 5 minutes:

thanks mikekan.for posting reply and ur help..........

Hi,
if we helped you, you can click on "helped me"

your welcome