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Hello, I have designed an UWB antenna, I am having a problem wit hthe lower band of the UWB antenna, I could not get the 3.1 GHz, the lowest frequency i got was 3.6 GHz. I need help please. Any help is appreciated.
I have an UWB antenna that is composed of double sided substrate. I noticed that when i round the lower vertices of the upper side (patch) or the upper vertices of the lower side (ground) the matching improves, i reviewed the imaginary and real part of the input impedance and i found...
What is the relation between the dielectric permittivity and the fringing on the edges of the patch? does this have any relation to the radiated power, the efficiency and the bandwidth? your help is appreciated.
I am follwoing the steps:
1. Select the surface.
2. Write click on it.
3. Select plot fields.
4. Select j --> Mag_Jsurf.
I get a colored view of the current density on the antenna. How can i get the current distribution as arrows?
Hello. What is the best option for the solution setup, solution frequency and frequency sweep?
Can i have a solution frequency of 7GHz with a frequency sweep that extends from 2 to 20 GHz?
Thank you Fereshteh. I want to dispaly the dimensions on the antenna for putting the plot in a paper. I use the steps you provided for knowing the dimensions, now i want to add them to the antenna plot.
I created an antenna, i defined a sweep that extended from 2 to 12 GHz, i had a solution frequency of 7 GHz. Later i changed the sweep to be from 2 to 20, i changed the solution frequency to 11.5 GHz. I got very different results in the two cases. Can any one help me why is that...
I have a problem when simulating my structure using HFSS. It keeps giving me the warning : poor convergence in computing port despersion.
When i do simulations, i do not find major effects to the changes i add to antenna structure. Can this be due to the poor convergence in...
Sometimes i have the S11 in the driven terminal solution greater than 0dB. I make modification to my antenna and S11 reduces. It becomes -3 or -4 dB. Are the later results correct given that i got a more than 0 dB results one of the times? If i made the hardware and the measurement...