Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Search results

  1. M

    Interconnection by square waveguide

    Hi all, I have two fixed square waveguides with slightly different cross section, and they are shifted along x and y axis. I have to design (in HFSS) a waveguide interconnection that allow this connection and implement the x-y shift. I have just tried to use mitered and continuous bands (with...
  2. M

    Coupling Matrix for Microwave filter

    I have realized the procedure to calculate the Coupling Matrix, now is there a method to properly dimension the waveguide iris structure ?
  3. M

    Matlab. S Parameters. Coupling Matrix Synthesis.

    I am also interested if it possible. In detail, how can I calculate the S-Parameters knowing the Coupling Matrix ?
  4. M

    Coupling Matrix for Microwave filter

    Hi, I am not very skilled in this field. I should calculate the Coupling Matrix of a Pseudo-HPF for fixed parameters (Bandwidth, Return Loss, Number of cavities and Single transmission zero). What is the mathematical procedure ? I have read some papers and docs but they are so confused and...
  5. M

    Directional Loop Coupler

    Tks, this picture is perfect to understand the design, but have u also the dimensions of the structure (i.e. a, b, d, l1 ) ?
  6. M

    Directional Loop Coupler

    Hi, I am searching, paper, books etc etc to design, in HFSS or CST, Directional Loop Couplers, like this **broken link removed** (pag 35). I don't undestand how the 2 SMA and the waveguide coupled and if the second SMA is load. Then, in detail, where is the network between the 2 SMA and in...
  7. M

    Dual Mode Coupler Waveguide

    Hi everyone, i will need to design a 4-port waveguide coupler for square waveguide and the center frequency in 19GHz. Each kind of dimensions for the 2 square waveguides, holes or other are good. In addition, the waveguide should be parallel in order to connect other downstream levels To...
  8. M

    S Parameter on HFSS and two modes

    Hi, I have a simple question to do. I have implemented a 4 ports coupler 3dB of 2 rectangular waveguide. Each port is excited by 2 mode (vertical and horizontal) in order to verify if the coupler is dual mode. When I create a quickly report, there are a lot of S Parameters defined i.e...
  9. M

    Export HFSS project and import it by CST

    Hi, i would import a structure with all data from HFSS to CST. I have already tried exporting this antenna in the format .sat but when I import this file, I obtain only the structure without all parameters (materials and so on). In which way I can fix it. Is there a way to export in HSFF all...
  10. M

    Near-field to far-fiel

    Wait, I know that: The near-field zone of an antenna is defined from the ratio of its aperture size to wavelength. But I have 2 problems with this definition. 1) This is true for an aperture antenna, but what is the aperture size for another kind of antenna (i.e. patch) ? 2) In order to...
  11. M

    Near-field to far-fiel

    Hi, I would like to know, how is the correct distance between the antenna under test and the probe using the planar near-field technique. Someone could help me to understand more about this. thanks Marco
  12. M

    rectangular microstrip antenna

    I have to design a patch antenna at 10Ghz with CST to simulate and analyze its farfield. I would know all dimensions and parameters to design it.
  13. M

    rectangular microstrip antenna

    I would design and simulate a rectangular microstrip antenna with CST in order to analyze its farfield. Can someone give me all dimensions and parameters to design this kind of antenna ?
  14. M

    Help... Near Field to Far field

    Hi, I'm working on a NearField to Farfield (planar scanning) code in matlab. I have just tried to test this code on an easy structure (open-ended waveguide) but the radiation pattern is different from that obtained using literature equation. Does someone know a working script to implement the...

Part and Inventory Search

Top