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  Topic: Patch antenna in FEKO_Optimize the dimension
JulianCavinaugh

Replies: 1
Views: 8374

PostForum: Questions Related to Antenna Theory   Posted: Fri Nov 05, 2010 9:04 pm   Subject: Patch antenna in FEKO_Optimize the dimension
Dear,

I am designing the microstrip patch antenna. The criteria is reflection coeffient is below -20dB at the resonant frequency at 15 GHz, the range of frequency to optimize runs from 12 to 18 GHz ...
  Topic: patch antenna design in FEKO
JulianCavinaugh

Replies: 10
Views: 23721

PostForum: Questions Related to Antenna Theory   Posted: Thu Oct 28, 2010 2:39 pm   Subject: patch antenna design in FEKO
Is this calculator compute the input impedance of the micro strip feed or for the patch itself? (link below)
http://www.emtalk.com/mpacalc.php?er=2.35&h=20&h_units_list=hmil&fr=15&Ope ...
  Topic: patch antenna design in FEKO
JulianCavinaugh

Replies: 10
Views: 23721

PostForum: Questions Related to Antenna Theory   Posted: Fri Oct 22, 2010 7:42 pm   Subject: patch antenna design in FEKO
In the case I have input feed into patch antenna is 150, the input impedance is equal to 150 ohms+ reference impedance, the reference impedance I set to be 150 ohms too because I noticed that whenever ...
  Topic: patch antenna design in FEKO
JulianCavinaugh

Replies: 10
Views: 23721

PostForum: Questions Related to Antenna Theory   Posted: Fri Oct 22, 2010 7:02 pm   Subject: patch antenna design in FEKO
So when I want to compute the impedance of the quarter wave length microstrip, which is between 50 ohms and patch antenna impedance, The quarter wavelength microstrip impedance = sqrt(50ohms*input imp ...
  Topic: patch antenna design in FEKO
JulianCavinaugh

Replies: 10
Views: 23721

PostForum: Questions Related to Antenna Theory   Posted: Fri Oct 15, 2010 10:46 pm   Subject: patch antenna design in FEKO
Thanks a lot BigSteve,
Your information is very helpful. Then the total ZL+Z0 gives me the total impedance of the patch antenna, am I correct?
  Topic: patch antenna design in FEKO
JulianCavinaugh

Replies: 10
Views: 23721

PostForum: Questions Related to Antenna Theory   Posted: Fri Oct 15, 2010 10:10 pm   Subject: patch antenna design in FEKO
What is reference impedance? how is it related to the input impedance?
  Topic: patch antenna design in FEKO
JulianCavinaugh

Replies: 10
Views: 23721

PostForum: Questions Related to Antenna Theory   Posted: Fri Oct 15, 2010 9:00 pm   Subject: patch antenna design in FEKO
After I request the current and set the Voltage source, I get the input impedance for the patch antenna, which is approximately 150 ohms, but I still cannot get the impedance of the whole patch antenn ...
  Topic: patch antenna design in FEKO
JulianCavinaugh

Replies: 10
Views: 23721

PostForum: Questions Related to Antenna Theory   Posted: Fri Oct 15, 2010 7:54 pm   Subject: patch antenna design in FEKO
how to get the impedance of the patch antenna in POSTFEKO after I request the S-parameter?
I know that in HFSS, we can transfer from S parameter to Z- parameter and then read for the patch impedance ...
 
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