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Recent content by aermeydan

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    Radiation Boundary and ground problem in HFSS 9.0

    I have designed a microstrip antenna in HFSS 9.0. initially I defined radiation boundary every plane without z=0 plane. I know that if I don't define radiation boundary, this plane becomes PEC. Than this design worked but resonance frequency shifted. Normally, I have resonance at 307 MHz, but in...
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    HFSS 9.0 Unrealistic Simulation Results

    I have basic problem with capacitor definition. I have to define 3 pf capacitance in my design.However, when I define a cylinder Lumped RLC with height is 1.53 mm , which is in the substrate with its height is 1.53 mm too, then my measurements of S11 paramaters are bigger than 1. Obviously, this...
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    HFSS 9.0 Unrealistic Simulation Results

    I try to make Surface MRı coil. In order to achieve to this aim, I made one model and took measurements. In HFSS 9.0, I simulate this model but my results are very interesting.Because Magnitude of S11 parameter is bigger than 1 and I didn't explain this results. I have some predictions for this...
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    Capacitor problem in HFSS??

    designing capacitor hfss Hi all, I am try to make microstrip antenna in HFSS. I used matching capacitor. In my design, I used cylindrical PEC and I defined it as a RLC element in the design. However its effect changes with its legth, I wonder it normal or is there another way to define constant...
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    Define waveport in radiation boundary HFSS 9.0??

    Hi all, I am going to try defining radiation boundary contains waveport. From my friends, I heard that if I define PEC with initial point of waveport, this problem can be solved but When I tried to define this PEC with waveport, result was unexpected.Then, I put my design here, if anyone help...
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    HFSS Radiation Boundary Problem

    Thanks a lot.I am going to try your advice. And I want to ask another thing, What is the difference Driven Terminal and Driven Modal in HFSS?If you help me, I am so thankful. Thanks Added after 13 minutes: When I defined only one waveport,The S11 parameters always 1, this means no current...
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    HFSS Radiation Boundary Problem

    I tried to design microstrip on the dilectric material.However I want to see radiation all around the design.First, I design waveport and coax in the radiation boundary,then gave error. Then I define two different coax and I put my waveport outside of the radiation boundary and I substract inner...
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    How to define capacitor in HFSS 9.0

    define capactor I try to define capacitors for circuit and then tyr to add port this capacitance. However I define a box and from Lumped element properties I defined capitance for the box. But when I start to simulation give error. I write below: proje_yap1 (C:/Ansoft/HFSS9/) HFSSModel1...
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