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Recent content by myicejade

  1. M

    Can I design 3W WCDMA power amplifier adopting back_off

    MW7IC2240 is good choice
  2. M

    HELP : Please recommend one LNA transistor

    Agilent ATF54143 and so on
  3. M

    In RF circuit design, which ground method is better?

    I think : below 2GHz use via to grond above 2GHz use 1/4 of wavelength(open stub)
  4. M

    How to improve the LNA's IIP3?Thanks!

    how to improve lna noise figure? if you only improve IIP3 , I think you can increase bias current
  5. M

    PLL jitter ang phase noise

    waveview analyzer eye diagram how to plot I can introduce you a good book " PLL Performance, Simulation and Design", by Dean Banerjee. .
  6. M

    Can I design 3W WCDMA power amplifier adopting back_off

    I want design a 3W(35dBm) WCDMA PA adopting back-off method , and amplifier is MRF21060.driver amplifer is MHPA21010. I dont know if the above choice is ok ? please help me ? thank you!! if you have better choices ,please tell me ! thank you !! parameters are as following: output power...
  7. M

    Help me with designing VCO using Serenade 8.5

    Re: VCO design you can visit Synergy or Z-communications company and download some applications about VCO design. these may help you !!
  8. M

    LM2326 PLL does not lock

    lm 2326 thank you very much!!!! I have learned a lot from your advices, thank you once more!!! I Love EDAboard
  9. M

    "Advanced Design System" help

    ADS software has many functions, do not know that you want to study the content of ADS software that part,. At first ,You may study it's basic course https://www.kilomega.com/software/index.htm
  10. M

    LM2326 PLL does not lock

    how does a pll circuit working please help me !!! How I can post circuit diagram (BMP)on edaboard!!!
  11. M

    LM2326 PLL does not lock

    low temperature pll lock problem National Semiconductor recommending circuits about LMX2326
  12. M

    LM2326 PLL does not lock

    varil plls
  13. M

    LM2326 PLL does not lock

    rf vco varil sirenza appendix is National Semiconductor recommending circuits about LMX2326
  14. M

    LM2326 PLL does not lock

    lm2326 thank you for your advices loop filter : C1=3600PF, C2=22nF,C3=470pF ,R1=15K,R2=91K loop bandwidth:2KHz these values was abtained from EasyPLL(National Semiconductor) this question is resolved!!!!! In my circuits ,According the recommonding circuits of LMX2326, I parallelled a 50Ω...
  15. M

    how to measur PA's output VSWR

    vswr measur network Now I am designing a WCDMA 2W PA, and I donnt know how to measure output VSWR,because I am afraid of damaging network analyzer under having powe supply.
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