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Recent content by meysam.namdar

  1. M

    Ground parameter for modeling in feko

    Hi all I want to use Infinite ground in feko , multilayer ground , but the problem is the specification of the dielectric that i want to use . if i use 2 layer for the ground , please help me to fill the specification of the dielectrics as : 1-Relative permittivity 2-Dielectric loss tangent...
  2. M

    Radar calibration sphere standard size

    hi everybody i have one question, i know that there is a standard sphere for calibration of RCS measurments. i see different diameter size for this sphere , 12 inch is the diameter that usually use. and by this page: **broken link removed** , spheres in different size has been sold. is there...
  3. M

    satellite comunications between each other

    Thanks alot Dave this is a particular satellite that Nasa Use and good for my report ,but i want to know that any other satellite in the space have this utility to communicate each other? and if they have, how do this in which frequency band?
  4. M

    satellite comunications between each other

    Hi I want to get some information about how 2 or more satellite out of atmosphere can communicate. please have attention not to communicate with the Rx or Tx in earth, but 2 satellite around the ground. Can anybody help? :|
  5. M

    colpitts Oscillator design.

    hi thank alot for colpitts.pdf but in the end of this file has an easy maple script. Can anyboady change this to matlab m.file because i dont have any opinion in maple. Thanks
  6. M

    matlab m file and control system

    Hi all. I want to develop an m file that can be used to analayze the close loop system and then drive the system with a step input or ramp input or impulse input, then i want setting time andpercent overshoot and steady state error. I can work with matlab toolbox and calculate these but the...
  7. M

    project of microcontroller

    some projects over microcontroller Thanks alot. I have an AT89s51 base board and i do this simple project,using timer/counter and interrupt for generate square wave on pins and LCD and keyboard scan, my internet connectin has some problem and not open some of pages. as soon as possible for me...
  8. M

    project of microcontroller

    microcontrollers project Hello to everybody I want some project to do it, simple to complicated, Please help me and acquaint me, I amaz about what i want to do. Thanks alot

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