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Microstrip Transmission Line ADS

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antennadesign54321

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Hi All,
I'm new to ADS.
I'm a student, and needed your help, I want to design a Microstrip Transmission Line using ADS.
I know Zl = 150-75i ohm , , Zo= 75 ohm , l ( in terms of lambda) , Di-electric constant= 2.22, h= 3 mils, Zg=50 ohm

Need to find Zin,Reflection Co-efficient, S11 ( at input).If you can guide me how to go about it, i will really thankful.

If you let me know the steps which i need to take in ADS. If you have a detailed document about it , please do share..

Thanks

Regards,
 

In ADS there is a smithchart compnent, you can use that.
That is a DG component.
I think it's no relation with Er and height.
 

(1) You have to determine width of microstrip line for the following specifications.
- Dielectric constant= 2.22
- h= 3 mils
- Zo= 75 ohm
You can do this task by using Line Calculator of Agilent ADS.
**broken link removed**

(2) Place microstrip detemined by step (2) in schematic.
Here length of micrstrip is variable for sweeping simulation.
I assume it is defined as "Lx".
And place Term with Z=50ohm as port-1 and Term with Z=150-j*75 as port-2.
See the followings.
**broken link removed**
**broken link removed**
The Designer's Guide Community Forum - ADS to design and simulate antena( please, help me)
The Designer's Guide Community Forum - Problem with ADS MCLIN !

(3) Run S-parameter simulation with sweeping microstrip length.
Here if you set frequency as fin=1GHz.
Lx=x*(c0/fin), here "c0 = 2.99792e+008 m/s the speed of light" is reserved word in ADS.
So you must not define "c0".
Then sweep x, for example, from 0 to 1.0 with step 0.01.
You can get S11 and Zin with normalized microstrip length as independent variable.
 
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what is the methematical relationship between frequency ,impedence,width,er of microstrip

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what is the methematical relationship between frequency ,impedence,width,er of microstrip
 

I think you can find these equations in microwave books, for example Microwave Engineering, David Pozar
 

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