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Recent content by Kyo Kusanagi

  1. K

    anechoic chamber or near field chamber

    [/COLOR] Hi, We're building our own antenna chamber too and seriously thinking want to use biff44's solution for antenna rotary positioner. Just want to know, how is your progress?
  2. K

    Advances in Microstrip and printed antennas

    Hi, I'm currently designing a UWB patch antenna using CST MWS. I got all the results i want such as S11,radiation pattern etc. The line impedance of my antenna also got 50 ohms. But what is confusing me is the smith chart not all 50 ohms at my desired frequency (3.1 - 10.6 GHz). Is smith chart...
  3. K

    Why 50 ohms is a standard in transmission lines?

    Hi, I'm currently designing a UWB patch antenna using CST MWS. I got all the results i want such as S11,radiation pattern etc. The line impedance of my antenna also got 50 ohms. But what is confusing me is the smith chart not all 50 ohms at my desired frequency (3.1 - 10.6 GHz). Is smith chart...
  4. K

    UWB Microstrip Patch Antenna

    Hi, I'm currently designing a UWB patch antenna using CST MWS. I got all the results i want such as S11,radiation pattern etc. The line impedance of my antenna also got 50 ohms. But what is confusing me is the smith chart not all 50 ohms at my desired frequency (3.1 - 10.6 GHz). Is smith chart...
  5. K

    Difference between impedance matching and power matching

    Hi, I'm currently designing a UWB patch antenna using CST MWS. I got all the results i want such as S11,radiation pattern etc. The line impedance of my antenna also got 50 ohms. But what is confusing me is the smith chart not all 50 ohms at my desired frequency (3.1 - 10.6 GHz). Is smith chart...
  6. K

    S parameters under different loading condition

    Hi, I'm currently designing a UWB patch antenna using CST MWS. I got all the results i want such as S11,radiation pattern etc. The line impedance of my antenna also got 50 ohms. But what is confusing me is the smith chart not all 50 ohms at my desired frequency (3.1 - 10.6 GHz). Is smith chart...
  7. K

    What is difference between K factor and Mu Factor

    Hi, I'm currently designing a UWB patch antenna using CST MWS. I got all the results i want such as S11,radiation pattern etc. The line impedance of my antenna also got 50 ohms. But what is confusing me is the smith chart not all 50 ohms at my desired frequency (3.1 - 10.6 GHz). Is smith chart...
  8. K

    FR4 substate for UWB antenna

    Hi, I think you can try design with FR4 substrate first and see the results. What i know for UWB it is better to use other substrate such as Rogers, Taconic etc since FR4 provide more loss. But, there is researcher that prove that FR4 also can operate in UWB frequency (up to 10.6 GHz) but the...
  9. K

    How can I describe a ROM in VHDL?

    vhdl rom file Hi all, I'm new in VHDL. I've got to design simple VHDL code for ROM & RAM. Data from ROM1 and ROM2 is added and the result is stored in RAM. I've to design each module first and integrate all modules by using port map design techniques. This design also has control unit. Please...

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