How a CPW feeding technique with 50 Ohm Transmission line is used in HFSS using waveguide port?Any example?
It can be done using the extended ground technique, as attached, the port selection can be lumped in this method.
Also, there is an option of 50-ohm coaxial line excitation, this can be realized through feeding the CPW line by finite-length coax section.
the question is probably in impedance-matched transition? oh, I hate that topic, the impedance step is large and and mode composition is different; making it wideband and well balanced is a long search and try process. I was just following google. https://www.google.com/search?q=microstrip+to+cpw+transition&tbm=isch and still had some unbalance between slots, so regular bridges were required between ground planes. Wave port excitation, on the other hand, is pretty simple in HFSS. You just put an integration line between hot and gnd for the mode which you want to analyze, or live it to HFSS...
Andrey Porokhnyuk Jinfeng Li Navid Hosseini
Thanks sir.
I am working on a paper.I could not understand why second resonant frequency appeared in my simulation and not in the actual paper.I have done optimization,parametric study.But it remains there.
Can you please help me out to find where i am wrong.
My lower frequency is equal to as per paper.But at higher frequency it is 4.9 Ghz (for first iteration i.e for rectangular patch).But as you can see , it is not in my result.I am attaching my output and model screen shots. and the result in actual paper.
Thanks
I am not sure where it can come from yet. But I see a BIG mistake in your model. It is too small. Anything can happen in the truncated space between the edge and the model boundary. There is even no place for fringing fields to decay.
Andrey Porokhnyuk Thanks sir for your quick reply.
Sir
The paper which results i want to recreate is(link given below.)The problem is my resonant frequency coming around 5.01 GHz with the rectangular patch(which is obvious as per dimensions calculated),but in the paper as you can see, researchers is getting frequency aroun 2.45Ghz as desired for rectangular patch(i.e. for first iteration). I could not reach such result with various boundaries conditions, as well as waveport or lumped port.When i recreate other iterations it's come to 2.45Ghz in my simulation( but without increasing the Bandwidth). And that i think because i am not able to make rectangular patch dimension correct.I will be highly obliged if you can help
Thanks
Link: Article A Compact Rectenna System With High Conversion Efficiency fo...
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