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Recent content by cswang

  1. C

    Ft vs. operating freq in RF design

    maximum avalible gain is more important than ft in really high frequency RF design(such as 60GHz)
  2. C

    current starved inverter

    current starved oscillator What's your operated frequency? The device size will introduce the paracitic cap, and will degrade yout speed.
  3. C

    Question about VCO in a real circuit

    Re: VCO question 1.internal phase could be happen in any phase , depond on your initial start-up phase, but it is not very important 2.VCO output, it is a sine, or pulse wave naturelly.
  4. C

    unidentified transistor....please help

    1815 transistor How about 1AMN and AP17 this two transistor ? Could someone give me the manufactor name and part number ? Thanks
  5. C

    Anyone Who Can Help Me To Give A Example Of LNA or PA?

    Your design is on single chip or lump element ? That's a totly different design methodology!
  6. C

    RF options for HSPICE?

    I don't understand , you mean that input file format change ? or just not compatible with your design enverment ? I am familiar with HSPICE , maybe i will feel free :o
  7. C

    RF options for HSPICE?

    cosmosse Why ? Could you tell us your experment ?
  8. C

    how to use the "encrypt" in hspice?

    de-encrypting hspice model That function only hide your text between them in .lis file .... I always use that to make my .list file more shorter , clear and readable!
  9. C

    How to simualte CMOS spiral inductor ?

    I know that , but in my experement , to estimate inductor is not't hard , but Q is really difficult! Each tool will get different Q value and also different from our measurement data ! any idea ? thanks!
  10. C

    How to simualte CMOS spiral inductor ?

    Hi ! Anyone know which EM tool can precisely predict CMOS spiral inductor Q and model ? Where can find the example or document ?
  11. C

    Does anyone know SiGe layout article or ebook?

    Yes , it is the same as analog or RF IC layout ! you can reference the art of analog layout e-book in **broken link removed**
  12. C

    Using VNA for RF impedance and phase measurement

    How to use VNA to measure differential CKT impedence ? :?:
  13. C

    How to maintain NF? reducing the signal power...

    Re: re: How to maintain NF? You could design high gain and low gain two mode to reduce your design! "A CMOS Cellular Receiver Front-Ends from specification to relization " wroted by Michiel Steyaert is a good book for this topic!
  14. C

    Could somebody explain Analog IC Design Flow?

    I agree you ! Because analog model can only descript 1 ~ 3 order behavior , a lot of non-linear item is hard to model !
  15. C

    Looking for RF IC for U-NII band transceiver

    Dose anyone has 802.11a vender's chipshet datasheet?(Like Atheros ? Intersil ? RFMD ? or envara?) Could you pm to me Thanks!
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