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Recent content by ning0703

  1. N

    Kindly advisefor graduate of RF

    you are not the only one encountered this problem , sometime , people cant find what he wanted ,just do it and wait for opportunity
  2. N

    eda R.F. e-books upload/download

    Regarding EMC Book there is a BOOK for this , great ! sometimes i just think all this EMC should be take a proactive action based on one's experience .
  3. N

    Ericsson RF UMTS Tuning and Optimisation Engineer

    ericsson rf optimization must be able to work in the USA without needing a visa , i think just American citizen can try this work . pity
  4. N

    single input - differential output RF circuit

    for single port to differential port we know we need to use balun ,but for the differential line matching circuit , can some one give some suggestion , how to tune the matching circuit ?
  5. N

    Why PA output doesn't need to match 50 ohms but LNA input ?

    got it and know much about the PA knowledge, i give my point on pa match , maybe we know the loadingpull , you need to select the output impedence for MAXpower of max efficiency , there are not the same point , so deside which you want and then select the impedence point
  6. N

    Req: Articles on Antennas for Mobile Handsets

    hi for mobile antenna design , i suggest you to search one book written by a taiwan person , i am sorry i have forgotten his name and the book name , the book is something like MICROSTRIP BROAD BAND ANTENA DESIGN . ok good luck
  7. N

    How about output matching network

    i think you need to put you result on the web , then some one can help you debug
  8. N

    Help! How to measure S parameter of a dipole Antenna!

    how to measure s-parameter antenna got it you can bend the other ends to get a good direction
  9. N

    Where to find tutorials for HFSS?

    hfss manual you can try to find the former topic
  10. N

    Microstrip fix antenna feed

    maybe you can use coaxial feed and use side feed you can use some soft to computer a feed line
  11. N

    Help me interpret LHC and RHC of a patch antenna

    antenna parameter danesh i will ask you a question where do you get this graph ,do you get this graph from the EMsimulater soft , and which ? i don not know how to know the polarization from the HFSS .
  12. N

    Electromagnetic Pulse

    but if in xfdtd how can we do to add EMP exciting
  13. N

    The manual of HFSS 9.0 for download

    HFSS9.0 manual i can not decompression it why ? something is missing
  14. N

    Planar Inverted_F Antenna

    use hfss i think it is much better
  15. N

    Could you help me to correct this structure?

    sorry i have forgot the e-mail ning0703@sina.com

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