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Hi Zorro,
I have fixed the first thing. I was feeding antennas in wrong way thinking that 'Edit sources' ll do the trick. But now i have fed the antenna 2 and 3 with equal amplitude and opposite phase manually in HFSS while they are at equal distance from receiver antenna. I see the total...
hi Zorro,
Yes. both antennas are at equal distance from centre antenna so i am feeding both of them with equal amplitude and opposite phases. I am using 'edit sources' option for this and setting the 'scaling Factor' (which is related to amplitude) for both antennas to '1' and 'Phase offset...
Hi Zorro,
I agree with what you said. I already tried to play with the amplitudes (tried to reduce the amplitude of the antenna which is closer to centre antenna compared to the other one) but still it does not effect the graph that much. I did what you suggested, i placed antennas 2 and 3 at...
Dear All,
Kindly see the attached HFSS file,it contains two separate Designs. One is of 'single Half-wavelength Dipole' operating at 2.4 GHz. This design is perfectly fine and giving the results as expected. The other second design consist of 3 Identical Dipoles(operating at 2.4 GHz), The...
Hi All,
I need some basic reasoning for the following questions related to the transmission line theroy. Hope so i will get some good answers or documents or links which will clear it up.
when a transmission line is left open at one end, the fringe fields are modeled with a parallel capactitor...
Dear All,
I have the following question related to the PAE of Class A power amplifier. Useful ideas,hints are welcome.
A single-stage power amplifier operates at 30GHz and and is perfectly matched at the input. It can at maximum deliver 20dBm power to a 50Ohm load. The amplifier is operating...
Dear All,
I have the following question Related to the Class A amplifier. I hope that i will get useful hint, ideas or solutions over here. The question and the conditions are as follows:
The input level of a class A amplifier can be increased further than usual until the current waveform...
Hi,
I cant open the document. But i believe you are mentioning the document name 'metamaterial' available on Ansoft website. In that document they have broken the mushroom structure so that ports can be placed on both ends to make the problem a two port problem. If you want to try that method...
Hi legyptien,
See the attached document by HFSS application engineer richard remski. You will see the direct transmission method explanation for PBG surfaces. I have done some work on these surfaces. I hope it helps you.
/SC
Hi TT,
Eigenmode solver is extremely sensitive and if convergence is not achieved as you have mentioned you cant really trust the results. The guide you are following is a small portion taken by the Guide available on Ansoft website namely 'Metamaterial'. I would strongly suggest you to...
Hi,
For the Air BOx dimension, Lamda is calculated by the simple formula of C= f*Lamda,where C=Speed of light and f= frequency(always choose lowest frequency of interest in your frequency range).
There is no point in using er(relative permittivity) in calculating Lamda for Airbox dimensions...
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