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Recent content by zicothec

  1. Z

    Looking for RF design kit for ads

    can anyone help me please to find design kits for ADS (GaAs and GAN and others ) , I'll use it to design MMIC circuits , only for tutorial use
  2. Z

    wideband VCO design using HBT

    Thanks u frank , I read in many articles that the CB configuration can be the best one but really I don't see why. U chose the CE , you have right that the common emitter provides the highest loop gain , but we don't need a highest one , only we need is a loop gain greater than one in order to...
  3. Z

    wideband VCO design using HBT

    Which configuration can be used for wideband VCO design? common base ,common emitter or commn collector. can you give me any example of calculs. thanks
  4. Z

    use SDD to generate noise in ADS

    how is it expressed ? :?
  5. Z

    use SDD to generate noise in ADS

    I use the HB simulator to simulate the steady state of oscillator, when I activated the noise simulation, I Have HB.freq and HB.noisefreq, I know that I can use only freq in weighting factor. I want also to simulate the phase noise so I implement the Low-Frequency noise sources in the transistor...
  6. Z

    use SDD to generate noise in ADS

    Thanks for your reply. I have I_Noise=Kf*I(t)^Af/(1+freqnoise^Af) and I(t)=Idc+Iac so I can't use directly the I_noiseBD, because the Ie is for dc current only
  7. Z

    use SDD to generate noise in ADS

    Ok , I know that, :) I have I_Noise=Kf*I/(1+noisefreq) can I use the noisefreq gived by the HB simulator directly ?
  8. Z

    use SDD to generate noise in ADS

    Thanks you, you gave me the help of ADS, but it's not helpful (for noise in SDD):cry: Can you give me an example plz? :|
  9. Z

    use SDD to generate noise in ADS

    for the large and small signal :)
  10. Z

    use SDD to generate noise in ADS

    can you give an example , how to use SDD(Symbolically Defined Devices) is ADS to generate noise
  11. Z

    where can i find a temex varactor models?

    TEMEX varactor models? Any one know where can i find a temex varactor models?
  12. Z

    introduction to RF and MW swithces design and theory needed

    RF and MW swithces? I wanna ask you if there are a possibility to design a swithces based on HBT ? Else could you plz give an introduction to RF and MW swithces design and theory . 10x
  13. Z

    S-band vco mmic - request for resources

    10x Have a link? I can't find this serie
  14. Z

    S-band vco mmic - request for resources

    S-band vco mmic I searched for mmic vco that covers the S-band , if u have any idea :articles , books , publications?
  15. Z

    HF VCO conception- wide tuning range and low phase noise

    hf vco Hi all , plz help me to choose the vco's topology to obtain a wide tuning range and low phase noise.
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