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bradsdr

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ADS Antenna Simulation issue
Oct 10^th, 2013, 6:49am

Dear Members,

I am new to this forum. I am trying to simulate a microstrip patch antenna in ADS momentum. The tutorial I am following is

http://www.carlomozetic.net/userfiles/Tutorial_ADS_momentum.pdf

But results of my simulations are not right I think. I have also attached my results

Any pointers on what could be the issue ? Any tutorial on designing a microstrip patch antenna would be appreciated.

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result.png

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harpoon

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Hampshire

Re: ADS Antenna Simulation issue
Reply #1 - Oct 11^th, 2013, 1:29am

Looks like a Test bench or setup issue.

Are you sure you have the right model files ? I have not used Momentum before, but I am guessing you need to setup the material properties and antenna X-Y-Z dimensions.

I am guessing you'll need ports correctly inserted for it to work.

If possible, look at tutorials from ADS first to get a hang of the tool.

Good luck and don't forget to report back on where it went wrong and how you fixed it ...

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bradsdr New Member Offline Posts: 6	Re: ADS Antenna Simulation issue Reply #2 - Oct 11^th, 2013, 9:43am I went through the tutorial again and couldn't find any issue that could give false results. I set material properties and and antenna dimensions similar to what is given in the tutorial. My antenna layout looks like this I would definitely give feedback on the forum after resolving the issue.
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harpoon Senior Member Offline Posts: 112 Hampshire	Re: ADS Antenna Simulation issue Reply #3 - Oct 11^th, 2013, 11:42am One suggestion, can you add another port on your antenna and plot s21 ? Or better still ... Make a 50 ohm line, put 2 ports at 2 ends, and plot s21. Change to 75ohm and resimulate Just to confirm momentum is working ...
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bradsdr New Member Offline Posts: 6	Re: ADS Antenna Simulation issue Reply #4 - Oct 13^th, 2013, 12:26am Thanks for your suggestion. Momentum is working fine. I say this because example that come with momentum is working fine... I am lost here!
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bradsdr New Member Offline Posts: 6	Re: ADS Antenna Simulation issue Reply #5 - Oct 13^th, 2013, 12:32am Another question! How can I find the input impedance of schottky diode using ADS simulation? I want to find out impedance on 2.45 GHz ?
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harpoon Senior Member Offline Posts: 112 Hampshire	Re: ADS Antenna Simulation issue Reply #6 - Oct 14^th, 2013, 12:33am I do not have ADS ... but I imagine you can put a DC voltage port on the diode, vary the DC voltage and plot S11 ?
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