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Recent content by harmony

  1. harmony

    The stability of LNA?

    rollett stability s parameter As a rule of thumb for any microwave amplifier, that if it simply finds an open circuit load it should oscillate
  2. harmony

    what is the metal used in microstrip antennas?

    yes, u can simply use copper or any higher conductivity materials with the least possible loss tangent
  3. harmony

    How to calculate the receiver dynamic range?

    receiver dynamic range hello how to calculate the receiver dynamic range if i have the overall noise figure and the output signal to noise ratio ? if anybody had a good paper/tutorial i d be thankful
  4. harmony

    Large Signal S-Parameters

    hello, i ve never gone through any amplifier design, but rather mixers, & could find LSSP simply via that mean, my be u can search 4 any specialized tutorials that could help u in understanding this concept 4 amplifiers this web page can be helpful www.rfic.co.uk
  5. harmony

    Large Signal S-Parameters

    hello, as u already know s-parameters (or small-signal s-paarmetrs) r only applied to linear systems, but wht if we need to charecterize any nonlinear system ? like transistors, diodes, and many microwave systems. 4 that reason u ll need to apply some nonlinear analysis methods to linearize...
  6. harmony

    i was a RF fresh man, some questions about RF

    hello man, the best 2 start with, according 2 my experience, is 1st to review the basics of RF & microwave engineering, & afterwhich choose the topic u r intersted in by better reading some papers and articles. Phase locked loops, for Blanchard, Alain should be ok
  7. harmony

    What are radomes and what is their use?

    what are radomes ? can anybody give me a brief idea about radomes & their applications ??
  8. harmony

    How to produce S-parameter in HFSS w/o current excitation?

    Re: S-par in HFSS hi, u ve 2 use an s-parameter controller to produce them, in this case, apply input and out terminals for ur circuit/system
  9. harmony

    "Advanced Design System" help

    u can also use the avaialble online help in ADS itself, or on its web page http://eesof.tm.agilent.com/applications/
  10. harmony

    Physical meaning behind an imaginary impedance

    does anybody know the physical meaning behind an imaginary impedance ??
  11. harmony

    Matching Network affecting Radiation Pattern?

    it would definitely affect the gain of the antenna, but not necessary the RP
  12. harmony

    How to improve balanced harmonic mixer conversion loss?

    Re: Mixer conversion loss many thx guys 4 ur replies, but i'm really wondering, coz all of other parameters are almost perfect in my case (IF & LO return loss, and isolation as well) except 4 the conversion loss and at only a certain frequency band, do u think it might be a problem with the LO...
  13. harmony

    How to improve balanced harmonic mixer conversion loss?

    Mixer conversion loss Hello guys i need to know the factors affecting the conversion loss of a double balanced harminc mixer ? & how to improve it ?
  14. harmony

    How to use results of HFSS in Matlab ?

    matlab hfss from the simulation results window in HFSS, choose (Export) and then into data file (touchstone format can be OK) any data format can be equally read by MATLAB
  15. harmony

    How to plot 3D radiation pattern?

    it is not that impossible guys as u say !! anyway, if was impossible 4 u, then use (Gnuplot) , it is an effeceint alternative and a free famous software

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