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    How to achieve phase difference from phase respons of a hybrid/Coupler?

    hi every one. I have 2 txt file that contain phase for s31 and s41 from a 3dB coupler(Hybrid). It must some how give the 90 degree phase difference and when i subtract them i get weird result? could any one give me a clue how to get this result from these files? I must get this : from these...
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    Substrate Integrated Waveguide (SIW) Monopulse Slot Antenna Array

    hi all. i want to simulate this paper in CST. i create the model in solid works and import it in CST,but i did not know any about appropriate boundaries for this structure,and also i want to know which setting i must use to get the H-plane sum pattern ans E-plane sum pattern? thank you all
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    Wrong Simulation of this cpw antenna !

    hi every one. i want to achieve the result of this paper i cst,bur i cant get even any result cloe to this paper,could any one help to correct my design? please help me,that is urgent
  4. E

    some tutorial about SIW Coupler Design

    hi i want a full tutorial about designing siw couplers? could any one please help me?
  5. E

    Metamaterial & Anisotrpic in CST

    hi all, could any one give me some simulation of any ind of metamaterial in cst? i didn't get anything from Google. but i need to see how can i simulate a cst file which works on meta-material and an-isotropic.
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    [SOLVED] Why this simple microstrip line in CST & HFSS has different response?

    hi dears. i have simulated a simple microstrip line model in HFSS & CST ,but i think the cst response is wrong. could any one check this files and tell me what to do for getting same response in cst and hfss,please? Thanks in advanced:thumbsup:
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    How can i find zeros of this nonlinear equation in matlab?

    hi there,i have a nonlinear equation for insertion loss in generalized chebyshev like this: IL(x)=cosh((N-3)*acosh(x*sqrt((Omega0^2 -1)/(Omega0^2 -x^2)))+3*acosh(x)); now i want to find roots of this equation in matlab: 1+jεIL(x) & 1-jεIL(x) ε=0.100503781525921; Omega0=1.32551104310002...
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    Pseudo Elliptic Filter Design

    hi every one. first of all,sorry about my english:-D. i want to create a code for synthesizing pseudo elliptic filter to achieve to the circuit of a low pass filter,i read some article but i just confused.please help me. i need to solve this problem seriously, so please help me with a simple...
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    richard transformation

    hi there, i have a lowpas filter (invert chebyshev) <order:11. now i want to use richard transformation to find Z and EL. how can i find the practical Z & EL? my cutoff frequency is 2GHz. please help me:bang::bang: Schematic: https://obrazki.elektroda.pl/3061389200_1411144940.jpg response...
  10. E

    Qustion on tWave Port's Options

    hi there, can any one give me some details about wave port--> re normalize all mode wave port--> do not re-normalize & deembed settings ? when we use them? thanks a lot
  11. E

    Nedd Help For Designing Ultra Wide BandPass Stripline Filter

    Need Help For Designing Ultra Wide BandPass Stripline Filter Hi there, i need some book or article for earning synthesizing equations or methods for designing a stripline band pass filter 1-2 GHz. it is urgent, can any one help me plz?:bang:

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