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Recent content by electronicman

  1. E

    Vector Network Analyzer

    I need to design just only the basic principle of the whole VNA with excluding all dsp, LCD , softwares ,just only the RF part of the VNA for RF frequency (from DC-3GHz,or even 1GHz) just only the principle
  2. E

    A very basic Physics quest

    the is both of them because the light has some wave and particle properities , it behaves like a wave somtimes and like particle in another time. (this question takes a lot of physics get puzzeled for a long time until they convinced the light is both of them) Thanks
  3. E

    how can I design a homebrew Plasma Etching

    copper etch plasma what I need is copper etching in order to design very small dimensions microwave circuits by using a microstrip for very high frequencies. Thanks
  4. E

    Microwave generator (1-10GHz) design

    Hi, what should I do to design a variable microwave generator ,let's say by using Gunn diode and some waveguides
  5. E

    how can I design a variable Gunn oscillator 1-10GHz using ?

    Hi, how can I design a variable Gunn oscillator 1-10GHz using waveguide ? (variable microwave generator) using IE3D Thanks
  6. E

    how can I design a homebrew Plasma Etching

    homebrew plasma cutter Hi,how can I design a homebrew Plasma Etching system ? power supplies,and where can I put the etchant material,....etc
  7. E

    polarization diversity???

    Hi, what is the meaning of polarization diversity ?
  8. E

    Vector Network Analyzer

    Hi, I am just wandering how can I design my own VNA(0-20GHz) from where I shoulld start ? books,notes,....,and schematics please help Thanks
  9. E

    Ad hoc Vs wireless nework with no dedicated backbone ?

    Hi , what is the difference between the ad hoc wireless network and wireless network with no dedicated backbone infrastructure..
  10. E

    Differences between the Ad hoc and wireless network

    Hi, What are the differences between the wireless ad hoc network and the wireless network with no dedicated backbone infrastructure? Thanks
  11. E

    CSI, channel State !!!!!!!!!!plz Help

    Hi, What is the physical meaning of saying that "the CSI is known at Receiver or at transimitter" .I know that CSI is a channel state ,but when I counterd channel capacity calculation I found there are some differences between the CSI at receiver capacity and CSI known at transmitter and...
  12. E

    Capacity of MIMO using Monte Carlo Plz help

    Hi, I need to simulate the the uplink capacity of MIMO per cell by using Monte (by Matlab)Carlo simulations all what I know is the equation which is below and that I have to generate 100 random realizations of user distribution and assume distance dependent path gain as the equation below and I...
  13. E

    please help in justifying these things in microwave filter

    Re: please help in justifying these things in microwave filt my microwave filters consist of four planar lumped filter and one planar distributed filter(parallel coupled filter).my substrate RT/Duroid with dielectric constant 10.2,tanD=0.0023,thikness 0.635mm, my frequency range is 6-14 GHz
  14. E

    please help in justifying these things in microwave filter

    Hi, I designed band pass microwave filters using Agilent ADS for my project, and the simulations were perfect, but when I did the measurements, The whole results were relativily good but not like the simulated ones so I put the following questions that appear after analyzing the results. why...
  15. E

    bandpass filter in ADS by using Spiral inductor interdigC?

    Hi I am design banpass filter by using planar lumped element(spiral inductor and interdigital capacitor) at 10GH.It is easy to do it with the L,C in ADS lumped element ,but the problem I faced when I tried to convert the lumped elemnt values from oridinary one to planar lumped element and...
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