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Recent content by Jacky Loh

  1. J

    Some questions about ploting active element pattern?

    I used the Master/Slaer B.C. and floquet port to model infinite array. I can get the active reflection coefficient of array element. But I have no idea about how to plot active element pattern? Could anyone give me some hints? 3ks!
  2. J

    Some questions about Wilkinson power divider

    1. Could you tell me which position of resistor is best? 2. And how to locate the 1/4 lamda of 70.7ohm transmission line? because there is a T-juction from input to two outputs. I have no idea how to choose the reference plane. 3. Need I compensate the bend and T-juction discontinuities? And how...
  3. J

    Some questions about Wilkinson power divider

    My design is a 1:1 Wilkinson Power divider. The input port is 50ohm. The two branchs is 70.7ohm. And the outputs are also 50ohm. The resistor is 100ohm. The impendance are calculated by TXLINE.
  4. J

    Some questions about Wilkinson power divider

    Recently, I am trying to design a 1:1 Wilkinson power divider using stripline. And I have some questions about it: 1. How to compesate the discontinuity, such as t-junction, bend, step....Is there some experence about it ? 2. I can have low VSWR at input port at f0(center frequency), but I can...
  5. J

    Dielectric in circular waveguide

    hello sergio mariotti could you give me an example about the two methods? thx
  6. J

    ANSOFT help: microstrip patch antenna-how and where to start

    Re: ANSOFT help do you use Ansoft designer? Pls read this tutorial about how to use designer https://www.emtalk.com/designer_tut_1.htm https://www.emtalk.com/designer_tut_2.htm And as you said, you need to insert a planar EM design
  7. J

    ANSOFT help: microstrip patch antenna-how and where to start

    Re: ANSOFT help there is a tutorial about how to model microstrip patch antenna using HFSS. https://www.emtalk.com/tut_1.htm Jacky
  8. J

    How to using master/slaver B.C. to model triangular array?

    Re: How to using master/slaver B.C. to model triangular arra Yes, the waveguide only excite TE11 mode. Because the frequency is 299.79MHz. And I use $R_angular (defined in project variable) in theta_scan (defined in local variable variable). And...
  9. J

    How to using master/slaver B.C. to model triangular array?

    Re: How to using master/slaver B.C. to model triangular arra Dear Ivan: Thank you very much for giving me a lot of useful information. And I made a HFSS project to model this infnite array. But the simulation result is not well agreement with the example in the book. The author used a modal...
  10. J

    How to using master/slaver B.C. to model triangular array?

    Re: How to using master/slaver B.C. to model triangular arra Dear Ivan: First, the radius is really 0.34lamda, because I see this example in other IEEE document. Actually, It is also hexagonal array, so could I make a hexagonal periodic cell? Regards, Jacky
  11. J

    How to using master/slaver B.C. to model triangular array?

    Re: How to using master/slaver B.C. to model triangular arra Dear Ivan I have uploaded the related documents. And I have the whole book, although it is a scanned format. If you want to read it, I can share the book with you. Thank you very much for your attention about my questions...
  12. J

    How to using master/slaver B.C. to model triangular array?

    Re: How to using master/slaver B.C. to model triangular arra Dear Ivan I did not draw a right cell as your instructions. Because I found that dv in the picture you gave is 0.62lamda, but the waveguide radius is 0.34lamda, I can not fill the waveguide in the periodic cell. I have no idea about...
  13. J

    How to using master/slaver B.C. to model triangular array?

    hexagonal unit cell periodic hfss Dear Ivan: Thank you very much for your detailed reply. After reading, I have two questions as follows: 1. I did not understand how to determine the desired shift. Could you tell which book or article describes related theory? 2. Could I exchange...
  14. J

    How to using master/slaver B.C. to model triangular array?

    hexagonal lattice matlab script I want to use HFSS 11 to simulate periodic triangular array. I refered to the getting started with Foquet ports downloaded from this forum. It descrides a method to model rectangular lattice array. But I have not understood how to model an unit cell. I am...

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