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  1. E

    Cadence CDB and OA issue

    I'm trying to open schematics from a library made on "cadence 6" on "cadence 5141" and i get this error "*WARNING* ddMapGetFileViewType: You are trying to run a CDB executable on an OA library file 'sch.oa'. The file is in library '******' in cell '******' in view 'schematic'. You must run an...
  2. E

    Mixer Linearity formula

    I'm trying to get the linearity expression of my circuit to use it in the design and to check simulation results .. what is the best method to get it ... and do you recommended any paper or book ?!?!
  3. E

    Mixer cinversion Gain PSS&PAC

    to get the mixer conversion gain I've tried the single tone test and pss and evaluated the gain ... now i want to evaluate it using PSS and PAC using some tutorials but I've got weird results ... so do you recommend a good tutorial for this simulation
  4. E

    Cadence tsmc 130nm (question) !

    I'm using Cadence with tsmc 130nm technology file ... and it's my first time ... now I'm facing a weird problem i have built a very simple circuit (an NMOS with its drain connected to the gate in series with an ideal current source between VDD and GND) I'm trying to apply the famous saturation...
  5. E

    Flicker Noise Corner Frequency

    according to what should i select "flicker noise corner frequency" that should be achieved in my system blocks design ?!
  6. E

    Rf mixer references !

    HI, I'm designing an RF MIXER .. i need to know what are the best reference in mixer circuit level ... any Suggestions or recommendations !?
  7. E

    RF specification distribution

    after obtaining the overall system specifications (Gain , NF ,IIP3 , ...) now i want to start distributing them (from overall specs. to block specs.) what is the best method for doing that ?? ... or could you please suggest a good reference. thanks in advance
  8. E

    ADS Modeling Tutorial

    I'm designing an RF receiver and after choosing the architecture and obtaining the system specifications I'm going into the phase of block modeling and system level design ... do you know what are the best tutorials that can help in this phase.?
  9. E

    Zero-if receiver mixers !!

    1- When designing a zero if receiver will one mixer be enough for my design .. or should i use two I&Q mixers? 2- if two, there should be a phase shift by 90 between the LO signals feeding them... what are the other design differences between them? 3- to avoid 2nd order distortion i will use...
  10. E

    system IIP2 (second order intermodulation distortion)

    in the phase of receiver's system design (system specifications extraction) i've evaluated the wanted IIP3 as IIP3=(3Pin-Pim3)/2 Pim3=10log(K.T.B)+NF (B -> bandwidth) but now i cant find a method to get IIP2 ??! any ideas !!! :?:
  11. E

    Zero-IF Receiver I&Q Mixers

    In the zero-IF receiver are the two mixers (I&Q arms) identical or not ?! :-?
  12. E

    ERROR While installing Ubuntu

    Hi, while installing Ubuntu inside Win7 using "Wubi" a message including the following shows up and the installation stops: ------------------------------------------------------------------------------------------------ Error executing command >>command=C:\Windows\sysnative\bcdedit.exe /set...

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