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sem

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About sem

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  • Country
    Israel
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    Yes
  1. Hello I have constructed a 18X18 linear planar array and it works fine. However when I have added a radome to simulate this array behavior in presence of radome, the radome model has been multiplied by 18 as well. How can I cancel this radome multiplication due to linear planar array definitions? Attached the model files. Thanks Patch Array.zip
  2. Hello I have designed 2 patch antennas that behave quite well in FEKO. Then I put them on the aircraft 3D model and try to mesh the A/C model at desired frequency that is several GHz. The amount of meshed elements on the A/C body is about 6 millions and solver is not capable of solving it, since its stacked in its first step for several hours What are possible ways to overcome this issue?
  3. Hello I have meant above that I want to round the substrate and not the patches. Nevertheless I have done it using CAD SW tool and then have imported it back (the substrate) to FEKO and redefined its parameters and it works. Now I want to duplicate my antenna (have 2 identical antennas in same FEKO design) in order to calculate a coupling between them. Since the antenna substrate now is a primitive object, I have a difficulty to move it. How can I solve this issue? Thanks.
  4. Hello I have solved the symmetry issues stated above and have proceed with the design. Now I want to round the 4 substrate corners by the radius of 6.35 mm to better simulate the antenna. How can I do that? I attach the latest design. Your assistance is highly appreciated. Thanks in advance. 4.3 GHz Dual Patch Antenna.cfm 4.3 GHz Dual Patch Antenna.cfs 4.3 GHz Dual Patch Antenna.cfx 4.3 GHz Dual Patch Antenna.cfx.bak 4.3 GHz Dual Patch Antenna.fek 4.3 GHz Dual Patch Antenna.opt 4.3_GHz_Dual_Patch_Antenna.out 4.3 GHz Dual Patch Antenna.pfg 4.3 GHz Dual Patch Antenna.pre 4.3 GHz Dual Patch Antenna.str
  5. Hello How should I add faces to the scope dialog that is described above? There is no option there to type a face name or choose the relevant face. Thanks.
  6. Hello I have fixed the edges and applied the symmetry. The antenna radiation pattern on Y (V) plane is still non symmetric. I attach the updated model and the radiation pattern picture. What can be the source for this issue? Many thanks for your support! 4.3 GHz Dual Patch Antenna.cfs 4.3 GHz Dual Patch Antenna.opt 4.3 GHz Dual Patch Antenna.pre 4.3 GHz Dual Patch Antenna.bof 4.3 GHz Dual Patch Antenna.out 4.3 GHz Dual Patch Antenna.str 4.3 GHz Dual Patch Antenna.fek 4.3 GHz Dual Patch Antenna.pfg 4.3 GHz Dual Patch Antenna.cfm 4.3 GHz Dual Patch Antenna.cfx
  7. Hello Thanks for a quick reply. What do you propose to update in the design to solve the symmetry issue?
  8. Sorry. Now all the files are attached. Your support is highly appreciated. 4.3 GHz Dual Patch Antenna.cfs 4.3 GHz Dual Patch Antenna.opt 4.3 GHz Dual Patch Antenna.pre 4.3 GHz Dual Patch Antenna.bof 4.3 GHz Dual Patch Antenna.out 4.3 GHz Dual Patch Antenna.str 4.3 GHz Dual Patch Antenna.fek 4.3 GHz Dual Patch Antenna.pfg 4.3 GHz Dual Patch Antenna.cfm 4.3 GHz Dual Patch Antenna.cfx
  9. Hello I am trying to simulate a patch antenna that consists from 2 patches and should work on 4.3 GHz center frequency. For some reasons The Y (V) antenna pattern cut is not symmetric. The X (U) cut is symmetric and VSWR value looks ok. Attached the antenna design data. I kindly request your assistance to find out the reason for this symmetry issue. Thanks in advance. 4.3 GHz Dual Patch Antenna.cfs 4.3 GHz Dual Patch Antenna.opt 4.3 GHz Dual Patch Antenna.pre 4.3 GHz Dual Patch Antenna.bof 4.3 GHz Dual Patch Antenna.out 4.3 GHz Dual Patch Antenna.str
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