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The idea is to design a series array, that's the reason of the other ports. I need to tune how much power is being transferred to the next patch, phase delay, etc.
Thanks for your reply. It seems I can't add more than one mode on a lumped port, couldn't figure out why. I know that on wave ports I can add up to 25 modes, however wave port is an excitation used when physical size of the port is comparable to or larger than a wavelength, which is not the case...
Yes, in HFSS. I have a patch that has 4 ports. I will feed two of the ports, 90º phase difference between them, to emulate circular polarization. I scattered data for 3 ports because: I want to see if the antenna is tuned through S11 and see cross-talk between ports using S(3,1) and S(4,1).
I...
When I simulate my patch antenna using impedance boundary vs. lumped port with the same impedance, I get different results.
Which result should i trust?
When simulating a microstrip line, with two lumped ports, I have found a 4.5dBi total gain, and almost 10dB of radiating eletrical field.
S11 is -25dB and S21 is -0.2dB. Instead of two lumped ports, I have replaced one with impedance boundary.However total gain is 3.6dBi. How can this happen?
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