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Recent content by zkmicrowave

  1. Z

    how to creat hugo or voxel model

    Dear all Now i want to simulate the fingerprint by cst, but i have no biological finger model. who can tell me how to creat the model. In cst, u can import the voxel tissue data, but this need to be licensed additionally. thanks for help.
  2. Z

    Designing a capacitor in q3d

    can u explain this issue in detail?maybe I help you
  3. Z

    Looking for some good ADS tutorial

    ADS u can visit the web www.agilent.com
  4. Z

    Looking for detailed information about MIMO

    What is MIMO? u can downlaod the document from www.3gpp.org .the detail is 3GPP TS 36 series
  5. Z

    who can help me to find the imr mixe working at 3.5GHz

    now i work for the wimax, i want to find the image reject downmixer working at the 3.5GHz,who can provide the ic?
  6. Z

    filter types between antenna and LNA?

    the specification of the filter between antenna and lna,may be required for the system spc.
  7. Z

    digital RF LNA vs Analog

    in real world,the signal is analog,so the lna must not be digital. i think what you said is seem as SDR
  8. Z

    wcdma downlink simulation results

    u can get the answer from www.3gpp.org
  9. Z

    microstrip coupled resonator simulation

    use moment
  10. Z

    Multiplier and Mixer?

    i think may be the noise of 20logN
  11. Z

    When do you do noise figure calculation for an amplifier?

    Noise Figure Calculation i think it is not. for we conside it is match
  12. Z

    LNA input and output matching

    i think that the input match only for the lowest noise. the output match is for the maxgain .
  13. Z

    about the group delay

    hi, the mixers are both SSB。I think the phase of the two lO not equate.So the delay may be negative.
  14. Z

    about the group delay

    Today , I test the DUT by the network of agilent 8347ET ,but the delay is the negative, who can explain this for me?Thanks The DUT consist of LNA +downmixer +Uppermxier,the frequency of both the mixer is equate.
  15. Z

    Design of double balanced mixer

    hi, i want to design the balun for wideband,but i dont how to design the balun i refrence the book mass writted but i simulate the balun ,the result is not good, can you tell me u how to design the balun
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