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Recent content by hausn

  1. H

    How to make a small microstrip balun ?

    thaks ,but i should design the balun like the microstrip lines for my antenna ,but i just have 25mm to use .use high dielectric is a good choose.
  2. H

    How to make a small microstrip balun ?

    thanks,but i do not understand why you use lambda/4.may books say balun size should more lambda/2 .
  3. H

    How to make a small microstrip balun ?

    i use the fr4 as substrate,the result is not well at the2-3G,other higher freq is ok
  4. H

    How to make a small microstrip balun ?

    how to reduce the size of microstrip balun,when it works at 2-6G ,but i just have 25mm ?i have try with the klopfstein taper but its result of s11 seems not good enough. do you have any good ideals?help
  5. H

    how to set the feed of split tapered coaxial balun in the hfss

    just like the title .and the picture below
  6. H

    Coaxial impedance transformation in feko

    i need to design a Coaxial impedance transformation which as a part of a complex antenna ,but i am not sure about the feed in feko. i use the waveports,then meshed it has wrong in the port.could anybody can give me some suggestion.plz
  7. H

    how to set the output port of micro-strip balun in hfss ?

    i know this model and my result is form the model.but the s parameters seems not well.
  8. H

    how to reduce the s21 in the exponent taper balun

    hi Azulykit i have read the paper ,and do a simuation like its siad ,the result is good but i cannot make it continuous .could you give some example? - - - Updated - - - hi biff44 i cannot understand clearly .but you said seems professional .i not good at this part ,could you give me more...
  9. H

    how to reduce the s21 in the exponent taper balun

    hi bigboss: the tanD = 0.0009; and any other cause the problem??
  10. H

    how to reduce the s21 in the exponent taper balun

    hi bigboss The relative dielectric constant is 2.2 ,h=1.5mm,the thickness of microstrip lines is 0.035mm.the radiation is perfect .
  11. H

    how to reduce the s21 in the exponent taper balun

    i design a taper balun ,but the result of s21 seems not good ,could you give me some advice to reduce the parameter.plz
  12. H

    how to set the output port of micro-strip balun in hfss ?

    hi aniakhan do you have any model of klopenstein balun and exponential taper balun .thoes days i have made a exponential taper balun .the result of the s11 is good ,but the s21 seems not good enough .could you give me some advice.
  13. H

    how to set the output port of micro-strip balun in hfss ?

    Congratulation to you hope soon see your Finished product。
  14. H

    how to set the output port of micro-strip balun in hfss ?

    hi do you have any progress in the taper balun ?
  15. H

    how to set the output port of micro-strip balun in hfss ?

    hi aniakhan could you point some key problem of the design tapered balun ,i am not clear of the part ,but someday later i have a chance to ask the expert ,i would not like to lost face !!plz

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