RF DESIGN using ORCad PSpice

Discussion in 'The Projects Forum' started by dyrain, Feb 2, 2007.

  1. dyrain

    dyrain Thread Starter New Member

    Joined:
    Feb 2, 2007
    Messages:
    2
    FOREMOSTLY, does orcad even support RF designs ( say frequencies up to 10GHz)?

    currently, i am designing a low noise amplifier using all the trial software versions that are available online. The orcad pspice is one alternative, but i'm a bit weary on the simulation results that i am getting.

    another thing, for a cmos rf LNA design, it would be best for me to implement a 4-terminal mosfet device into my design..however, i cant find a 4-terminal nmos (or pmos) model in the orcad library. all of the available models are 3-terminal model devices ( NMOS device with a source-body tied configuration ). What can i do?

    HELP!!!! :confused:

    Thanks in advance! :)
  2. n9352527

    n9352527 AAC Fanatic!

    Joined:
    Oct 14, 2005
    Messages:
    1,198
    It can simulate the circuit, however the result is most probably not going to be of much use. There are just too many parameters affecting RF design at that frequency to model accurately with SPICE.

    You can do your own MOSFET models, with four terminals, or there are many model cards available out there on the internet. Just make sure the parameters are suitable for such a high frequency of operation.
  3. dyrain

    dyrain Thread Starter New Member

    Joined:
    Feb 2, 2007
    Messages:
    2
    Hi again. Thanks for the reply!

    I'll give another shot on trying to work my design on orcad.

    I tried to find the mosfet model cards for RF, but to no avail!:confused:

    Would you have any suggestions on where to find them? particularly, a 0.5um mosfet level3 spice model card.

    Thanks in advance!
  4. voduychau

    voduychau Member

    Joined:
    Jan 3, 2007
    Messages:
    19
    Location:
    Viet Nam
    i think Pspice is not good for simulation.It's hard to learn

    some part give a wrong result,and some,i can't understand how to simulate it!

    i recommend you to try Multisim
  5. n9352527

    n9352527 AAC Fanatic!

    Joined:
    Oct 14, 2005
    Messages:
    1,198

    Unfortunately no. I have plenty of cards at different feature sizes, but none of them are binned for RF at 10GHz. And I doubt it if you could find one that is meaningful enough.
Similar Threads: DESIGN using
Forum Title Date
The Projects Forum Design DC motor control using SCR Feb 19, 2014
The Projects Forum Designing simple system to reverse polarity using a momentary switch Feb 16, 2014
The Projects Forum 2 stage switch design using mono-stable multivibrator circuit. HELP! Mar 21, 2013
The Projects Forum designing driver driving a 12V motor by using pwm output from microcontroller 16f716 Jan 27, 2013
The Projects Forum designing an Automatic pop-up target using a geared DC motor Dec 7, 2012

Share This Page