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    PCB design from circuit

    Hello, i have a circuit that was made in AWR microssoft office, and i want to create a pcb but i dont know about it, can any person tell me how can create this transmition lines (TLINE) that apear in the diagram?
    Thank you, and sorry or my english.Click image for larger version. 

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    Re: PCB design from circuit

    Have you ever drawn a RF PCB before ?? If you haven't, it will be a bit challenging.
    Transmission Lines are not ordinary PCB tracks and they have to be carefully drawn with their dimensions.Here, TLs are given by Electrical Length ( Degree) and Characteristic Impedance ( Ohm) so first you have to transform these quantities into Physical ones using with the Substrate which is to be used.So, you should calculate these first by either by assistance a TL Calculator or hand..
    Then once the Physical Values are clear, you can draw TLs on the PCB.


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    Re: PCB design from circuit

    Saturn PCB toolkit is a good start...


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    Re: PCB design from circuit

    Hello, thanks for your responce, i have never drawn a RF PCB before, but I've always wanted to do it and i'd like to learn. If you are willing to guide me I know that I can learn, the material i will use is the ordinary Bakelite. The relative permeability i think is 4.9, the other data are in the circuit, (Z0 = 50 ohm, EL = 25 Deg and F0 = 1900 Mhz.) If you know any program that with this data can draw the equivalent circuit and i can learn, i will be very grateful and it will be useful to know it for next designs, thank you very much and sorry for my english and the inconvenience.
    Regards,
    Alberto.

    - - - Updated - - -

    Thank you for your replay, I have downloaded the program and i dont know how to work with it. Thank you.

    - - - Updated - - -

    Hello, sorry, when i say ordinary bakelite i mean fiberglass substrate.
    Thank you.



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  5. #5
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    Re: PCB design from circuit

    Hello, please i found this website, i think this is what i need, please let me know if data i put is correct for fiberglass and if is correct the width and the length of the transmition line.
    Thank you
    http://www.emtalk.com/mscalc.php?er=...units_list=Lmm

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    Re: PCB design from circuit

    Quote Originally Posted by estenolotienenadie View Post
    Hello, please i found this website, i think this is what i need, please let me know if data i put is correct for fiberglass and if is correct the width and the length of the transmition line.
    Thank you
    http://www.emtalk.com/mscalc.php?er=...units_list=Lmm

    Click image for larger version. 

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    It seems correct but Tan_Delta should also be defined to get a healthy result.


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    Re: PCB design from circuit

    OK, please if you have another better website fr this , please send it to me.
    Thank you.



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    Re: PCB design from circuit

    Is your problem solved?



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    Re: PCB design from circuit



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    Re: PCB design from circuit

    Thank you.



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