Re: Microwave Office: Reference planes of RF Power Transisto
Hello Andrew77,
The shift may be due to lot of factors such as..
the first foremost issue is you need to have good device models for all Linear/Nonlinear devices you use, try to use the Spicemodels...
check the individual device model charcteristics againest the datsheet details if they are matching or almost matching then proceed with the design...
Or
You can go to Modelithics who provides good models & use with Microwave Office
There are Nonlinear models for Mitsubishi devices for using with MWO from Modelithics
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The second issue is the dielectric substrate parameters & the layout design...
& if lot of discontinuty & problems and even operating above 1GHz simualte the matching network using Electromagnetic simulator...
Use realistic substrate parameter values & do yield analysis before going for proto...
Finally, If you still have the problems then send the measured data & MWO project file to AWR support they will help you or send it to me at
manjunatha_hv@ieee.org
With S-parameter file you can do Small Signal analysis,
such as S-parameters, S11, S22, S21, etc,
Input/output impedance, Gain, NF, Stability of the device based on the meared data at perticular bisa conditions...
https://www.rfcafe.com/references/a...sign-of-RF-Microwave-Amplifiers-copyright.pdf
You can design PA using S-parameters, the procedure & a article is appended below...
First-Time-Right Design Of RF/Microwave Class A Power Amplifiers UsingOnly S-Parameters
other usefull documents on PA design documents using MWO...
www.rfpoweramp.com/papers/rfpa_mwo.pdf
www.polyfet.com/HFE0503_Leong.pdf
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---manju---