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Recent content by gnjus

  1. gnjus

    Master in LTE ( 3GPP )

    It would be good to start with LTE planning and design. You could create example project in Atoll or TCP to show coverage and throughput distributions and work with some design ideas...
  2. gnjus

    websites for communication engg ebooks

    check gigapedia.org
  3. gnjus

    TEMS...RF Planning and Optimization

    tems drive test Check this forum ... http://www.finetopix.com/forum_index.php
  4. gnjus

    Is Optical data transmission is safer than Wire transmission

    Optical Wireless transmission -> NO Optical Fiber transmission -> YES
  5. gnjus

    Check my answers for some capacitor problems

    my answers! 4. (or 3.) "30µf it is reduced to 10µf " => capacitors connected in series... 10=(30*C)/(30+C) C=? C=15µF
  6. gnjus

    Check my answers for some capacitor problems

    my answers! 2. solve 10µf i 15µf in series: (10µf*15µf)/(10µf+15µf)=6µf 3µf=(6µf*C)/(6µf+C) C=? => 18+3C=6C C=6µf
  7. gnjus

    What's the full name of PIC?

    Something like PICkha ;)
  8. gnjus

    Why is there no modulation index for digital communication?

    modulation index Do you actually know what is modulation index and what are the differences betwen analog and digital modulation ???
  9. gnjus

    how basic rc resonance circuit works?

    resonance circuit Same as Hartley and Colpitts oscillators... Basically idea is to create sufficient phase shift. (The Barkhausen condition: if there is positive feedback with a phase 0 or 360 degrees, you will get oscillation).
  10. gnjus

    Where exactly the charge of the capacitor resides ?

    Re: Capacitor When a material is subjected to an electric field, the polarization dipoles of material interact with the applied el.mag. field. For dielectric (insulating) material this interaction provides the material the ability to store electric energy, which is accomplished by the shift...
  11. gnjus

    which is best site for downloading books

    best sites for downloading ebooks gigapedia.org
  12. gnjus

    quaterwave impedance transformer

    2pi/λ Ok look... frequency is : f=v/λ --------------------------------- v=velocity of el.mag. wave in material λ=wavelenght in material... -------------------------------- What information do you have ? "it declares the Θ=90° to be 1Ghz"... it is...
  13. gnjus

    quaterwave impedance transformer

    quaterwave tranformer Electrical lenght : βd=(2pi/λ)d d=λ/4 => βd=2pi/λ * λ/4 =pi/2 (90°) frequency : f=v/(λ) v=c/n ; n=√εµ λ or d=? n=?
  14. gnjus

    Advantages of optic fibers

    ...very low propagation losses (~0.2dB/km)...

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