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Recent content by jwei363

  1. J

    RF Amplifier @ 200MHz

    200 mhz rf amplifier circuit for why not try gain blocks from mini circuits,siranza and so on
  2. J

    gprs modem interface proceduer

    benq gsm module you want to design it? I sugest you buy an industrial product. Siemens,wavecom,
  3. J

    Help me design an inductor

    why make? Just buy, www.coilcraft.com
  4. J

    Choice of software for RF amplifire/oscillaror design

    no use It's no use to compare different type of things. ADS,MWO,APLAC for General system,circuit sim CST MWS,IE3D,HFSS for EM sim Serenade,Genesys for some kind of circuits sim
  5. J

    I am looking for a good smith chart tool.

    agilent smith chart you can try ansoft designer. there is a good smith tool in it
  6. J

    extracte on-chip spiral inductor parameters from s-parameter

    re Define a network structure,than change the parameters to match your Spara,it can be done by Ansoft softwares or other EDA with optimal
  7. J

    2.6GHz dadio link - any experiences?

    re any difference with other freq?
  8. J

    Any good Book on Microwave Engineering

    collin foundations microwave engineering download there are so many books in Ebooks forum. Some good,some normal. But classic textbook is so few.
  9. J

    How do I short circuit? - PCB with LNA

    re remove LNA first, connect LNA in/out with a cap. 1500M is not so high.
  10. J

    What is the best linearization method for amps in TETRA ?

    re I think TETRA just like GSM,need linearize? if need predistortion is enough
  11. J

    Grounding / separating Analog and Digital Power supply

    re you can divide ground plane to Analog and digital, and connect this two to battery ground. if your ADC is a light load,you can use analog ground for all ADC analog and digital pin.
  12. J

    N*O*R*D*IC RF modules have a 4MHz Strange..

    re maybe they have OSC inside.
  13. J

    How to make a I/Q modulator?

    re theoretically,you can make all ic by discrete componets.but why not use ICs?
  14. J

    General RF / Microwave Software

    1 almost old software. you can try appcad at agilent or mwo at microwaveoffice I think that's better
  15. J

    Cellular Phone Blaster...

    you must transmit a broad band signal to cover the whole GSM,PCS band
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