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Recent content by quattro44

  1. Q

    Using 0 Ohm Jumpers in Impedance Controlled Lines

    Thanks for your reply biff44. So I should use resistors in small packages. But how will the resistor affect the impedance of the line? ---------- Post added at 02:33 ---------- Previous post was at 02:23 ---------- Thanks RCinFLA. I am aware of the small inductance that any via and 0 Ohm...
  2. Q

    Using 0 Ohm Jumpers in Impedance Controlled Lines

    Hello everyone. I would like to ask for comments regarding my problem. I am currently designing a GSM system that requires me to use 50-ohm coplanar waveguide on one system and 50-ohm microstrip on another. Along these impedance controlled lines, I have impedance matching networks. We are still...
  3. Q

    OrCAD Pad Designer 16.2 Type and Internal Layers Options

    I have been using OrCAD 16.0 for a while now and have gotten used to it. Recently, I installed OrCAD 16.2 to my machine. And as soon as I opened the Pad Designer to make a new padstack, I noticed little differences between the two versions. The selection for Type (Through, Blind/Buried, Single)...
  4. Q

    Cadence Allegro SPB 16.0

    cadence allegro spb Thanks for your reply. But I am new in Allegro, where can I find the ix and iy command?
  5. Q

    Cadence Allegro SPB 16.0

    cadence spb I have attached an image to explain what I meant. The black line is the pad, while the red line is the solder resist. As you can see, the resist is 6 mils bigger on all sides compared to the pads. I drew the pad already, is there a way to automatically make it 6 mils bigger on all...
  6. Q

    Cadence Allegro SPB 16.0

    cadence allegro Thank you for your reply. I have another question though, is there a way to automatically generate a solder resist for the irregularly shaped pad that I made? Its a bit time consuming having to draw another shape. Or is there a way to expand all the edges at the same time?
  7. Q

    Cadence Allegro SPB 16.0

    allegro spb Hi to all, I am a new user of Cadence Allegro SPB 16.0 but I have been doing PCB layouts for quite a while already using another software(Zuken CR-5000). I would like to know how i can go about making irregularly shaped pad stacks in Allegro. And if there is anyone that can give me...
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