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I'm getting beautifully looking mesh, but unfortunately the solution never get converged even for very simple structures. No matter of the basis function order, curvilinear tetrahedrons or all the new stuff inside. So frustrating...I bet there soon will be patches...Don't waste your time to...
edaboard grasp
Azulykit
parabolic dishes are always large relatively to the wavelenght (10-15 m vs 2-3 cm), so the size of the model will be giant. Thats the reason for using GRASP instead of HFSS.
Please, allow me to disagree, m8t. If you connect a coax to mains power supply (50 Hz) the energy delivered to the matching load will be transfered mainly by currents in inner and outer conductor. If you prowide rf (500MHz) the energy will be delivered to the load mainly by the field. The only...
What is the portion of energy carried by elecromagnetic field inside the coax versus the energy carried by currents in the conductors. I belive that lowering the frequency the greater part of the energy will be transmited with currents rather than EM field. Any comments?
Thank you for the link, m8t! But all antennas inside are not over ground plane (exept the 3-D monopoles ). They must stand away from the ground plane to work. Actually I need a model over ground plane. Something like p@tch antenna with wery wide BW
17. johnna_sm_2004.pdf
Does anybody has UWB (3.1-6 GHz) antenna design, with ground plane. I need radiation in only the half of the space.
Thank you in advance!
Re: Substrate
Because the substrate carry mechanicaly the resonant p@tch (conductor). As lower is the substrate permittivity as wider is the antenna bandwidth (wanted)
Other reason is to use dielectric is to decrease antenna size (wavelent is denominated with the square root of the relative...
driven terminal hfss
Lumped ports works pretty well if you need excitation inside the structure. I have simulated a lot of p@tch antennas feeded by lumped port, and with no change of their performance instead of tose feeded by wave port. According the manual, WP is suitable when you feed...
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