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165 Threads found on edaboard.com: Antenna Dipole Hfss
I need simulate an antenna in hfss for RFID. The internal impedance of IC at 915MHz is 12.8-j248 (NXP UCODE7). This is a serie impedance. To simulate this impedance I use a Lumped port with equivalent parallel resistance Rp ~ 4.837K and a capacitance of 0.7pF in parallel using a lumped RLC. Both in parallel connected to a dipole input. (...)
hi , I have a problem that when I make a dipole antenna parallel to the PMC the radiation pattern is wrong so can someone help me with the steps or something like that ?!
Good morning, Let me contextualize the problem I found with dissipated power and the way hfss computes it. I'm working now on a model which goal is to study the power losses that a certain material introduces. To do this, I used a basic electric dipole antenna, at 2.45GHz, which is λ/2 in electrical dimensions. This (...)
Hi I read a paper in which exact structure of a fat dipole microstrip antenna is described. My question is about the feeding structure. Is it necessary to set up for example a coaxial feed and its entrance as input port or we can draw port right at the antenna? Is there any difference between ADS, CST, hfss in this (...)
I can not simulate the antenna + chip (dipole antenna + chip) on hfss, please can you explain me how can I simulate a chip on hfss ??? can you give me some instructions or tutorial for my first simulation in this solver. Thank you in advance.
I aim to develop a conception where I will integrate a RFID tag; and I can not simulate the antenna + chip (dipole antenna + chip) on hfss, please can you explain me how can I simulate a chip on hfss ??? can you give me some instructions or tutorial for my first simulation in this solver. Thank you in (...)
Hi all, Can anybody help me out with this kind of antenna ( see attached file). What's the type of antenna? How does it work? How can one design this type of antenna and simulate it in hfss? What are the design parameters? Any related publications? Thanks
Hi , Im simulating a yagi antenna with 6 elements with the haft-wavelength dipole driven element at 2.4Ghz using hfss v15. The radiation pattern, gain, directivity are as expected :grin: But the input impedance is somewhat i dont understand. As i know the input impedance of an dipole is about 73 +45j(ohm) but the Z (...)
Hello everyone, I have a question, so I need your helps, please. I don't know that why we can use the two different dimension vacuum box in hfss for the dipole antenna simulation at 900MHz? And we just add the radiation boundary for one or both box? Thank you very much!
I have a simulation model in hfss that consists of a printed dipole antenna on a substrate but enclosed with a cover ( ceramic material). Such a model is to emulate an antenna inside of a chip. I am not sure whether to place the radiation boundary at the outer faces of the cover or create an air box surrounding the model (...)
Hi all , I am making some test on hfss , I create a dipole antenna on hfss , and I want to see how react with a perfect magnetic conductor , I have try to use a perfect H boundary in a surface under the dipole , but nothing change ! i do not understand this some one know why is this happening ?
hi I have designed a 7 Arrays dipole antenna for a BTS. It has a defined pattern . now i want to change the Amplitude and phase in EDIT SOURCES in hfss to make a Tilt in Pattern ? Would u pliz help me? Regards
Hi all i'm going to design an infinitesimal electric dipole above an infinite pec for height lambda/2.I'm going to earn figure 4.17 in antenna book,Balanis but the results aren't good at all.(VSWR and radiation pattern) i don't know how length i need for air gap in infinitesimal dipole?and don't know what is the problem? I'm using (...)
hi there, first post here so hello. I recently started using cst. I'd like to know if and how (i believe it is possible since it is possible on software such as hfss & FEKO) to import antenna parameters from matlab to cst automatically. I have a matlab file which produces parameters for antenna arrays such as dipole (...)
Hello every one. I want to simulate a planner dipole array antenna using there anybody to help me?(about excitation and pattern). It seems that we only can simulate infinite array using i right? please help me.any help can be useful.Thank you in advance.
Hi, I have a wire dipole antenna which i modeled as a driven element for a yagi at 2.45 GHz. When i was modelling in hfss i used a lumped a port between two wires. But when i built it on an SMA it seems like there is an extra resonance introduced to the dipole right after the main resonance. Does anybody has an idea (...)
pls can anyone help me on how to design dipole using hfss sotware?
Hello, I am currently trying to model the effect a balun has on a dipole. I have access to the s4p file of the balun. I modeled the dipole in hfss, exported the s-parameters to a file. I subsequently imported my hfss results & balun s4p file into Microwave office. The problem is that I used a lumped terminal port in (...)
Hi in literature sometimes we give the input impedance as a function of L / lambda0 (normalized length) Please, can someone show me how to do to plot it as a function of L / lambda in hfss for whatever structure (e.g. for a dipole, or a patch antenna). of course I know how to do it as a function of frequency. Thanks
Hello, I need your help about perfect E boundary in hfss; I'm biginner in using this software, I tried to simulate an manufactured antenna, but I got a S11=-15 and when I used perfect E boundary in the upper faces of the conductor (copper , thickness 40 um) I got the right S11=-28 dB (-30 dB foe the manufactured antenna) Any (...)