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  1. E

    Different Ant Impedance simulated CST & HFSS

    Hi all, I am simulating a similar design in HFSS and CST (TD) but getting different impedance. Any suggestions why ? which one would be more close to the real one? Thanks
  2. E

    vertical and horizontal induced measurements

    Hi, I am trying to measure vertical and horizontal induced voltages of a monopole antenna made out of a measuring tape. Since the antenna is vertically polarized there should be at least 10dB difference but at times it is not - any advise what i might be doing wrong? Thanks in advance
  3. E

    complex port Impedance Genesys

    Hi, Can anyone please advise how to define complex input port impedance in Genesys 2014.03? Thanks
  4. E

    Reflection-less matching for antennas?

    Hi all, We know that for maximum power transfer Zs = ZL* , this is known as maximum power transfer matching. But there is this reflection less matching which says Zs = ZL. Now if the Z has reactive part then there would be a difference. In antenna feed matching network design which method...
  5. E

    HFSS Impedance determination

    Hi all, I am simulating a pretty simple monopole antenna and aground plane place after a gap. I have simulated the results with waveport and lumped port - got VSWR = 1.6, and required gain patterns but when I check the Z11 - real and imaginary , I get around 0+5j. What have I done wrong? I...
  6. E

    HFSS Z parameter anomaly

    Hi all, I am simulating a pretty simple monopole antenna and aground plane place after a gap. I have simulated the results with waveport and lumped port - got VSWR = 1.6, and required gain patterns but when I check the Z11 - real and imaginary , I get around 0+5j. What have I done wrong? I...
  7. E

    Design Monopole feed in HFSS

    hi, I am trying to design a monopole with a ground plane next to it. Could anyone please advise which would be the best position to place the lumped port? the feed pin (in the direction of fed current) or the gap between the ground and the pin? The port in between would not reflect the actual...
  8. E

    Digital Oscilloscope to view high frequency signal

    Hi, I read your reply in one of the posts and thought you might be able to help me. I am using Keysight 2.5GHz oscilloscope to view a 121.5MHz signal across a 15pF capacitor. The data sheet says it should be a square wave but I am getting a sine wave of 121.5MHz. The probe bandwidth is 500Mhz...
  9. E

    HFSS IE hybrid design

    Hi all, I am trying to build a hybrid (FEm and IE) HFSS design. If I were to define IE region for my patch antenna (having three layers, Patch, dielectric and gnd layer). How do I do that? I tried assigning IE region separately to each layer but get an error. What about IE region -...
  10. E

    Radiation conversion basics

    Hi, I have measured radiation patterns of an antenna and got Az, EL and rEtotal magnitude and angle. I want to now convert these into gain plots. What is the relation between the above and gain to be plotted in matlab? is rEtheta = ReTotal cos angle? and rEphi = ReTotal sin angle? Where can...
  11. E

    Help reagraing OSLO- lens for diverging strobe 12 to 50deg

    Help reagraing OSLO Hello, I am a new user of Oslo. I am trying to design a lens for diverging a strobe 12 deg to 50 deg on one axis by cylindrical lens. Now the problem is how do I look at the results? via Spot diagram or Ray and anything else? I simply do not know this. Help would be...
  12. E

    Orthogonal fed Circularly Polarized Square Patch Antenna

    Hello, I am looking for a guideline or tutorial for designing orthogonal feeds of different lengths for feeding a square patch for getting circular polarization. Thanks
  13. E

    How to model Photo Diode in Microwave Office

    modelisation photodiode Hi, I am looking for a model of photo diode in Microwave Office. Thanks
  14. E

    orthogonal feed circular polarization Sq Patch

    feed circular Hello, I am looking for a guideline or tutorial for designing orthogonal feeds of different lengths for feeding a square patch for getting circular polarization. I have been working 8 am to 8 pm but in vain. Please help Thanks
  15. E

    Orthogonal fed circular Patch

    Hello, I am looking for a guideline or tutorial for designing orthogonal feeds of different lengths for feeding a square patch for getting circular polarization. I have been working 8 am to 8 pm but in vain. Please help Thanks
  16. E

    Help me convert DXF files to Gerber file using Gerbtool

    Hello, I am trying to convert dxf file (generated by Hfss ) into gerber file via gerbtool but it is not working. Can somebody help. It asks me about the input file and report. And then what should I do. My design is just a simple patch antenna. Thanks

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