On Thu, Mar 02, 2006 at 03:05:35PM -0800, joeft wrote: > If I understand your description correctly, you need to raise the > impedance of the 2.5cm wire at 200 MHz to keep it from conducting > interference to the outside of the box. Is this wire used for power? > If so, get a ferrite core (toroid) and put it over the wire; pass the > wire through it a few times if you can. > > Also, 100 nF caps may be beyond self resonance at 200 MHz depending on > their construction. Check the manufacturer's data sheet. It may help > to put a smaller cap (100 pF) in parallel with the 10 & 100 nF if 200 > MHz is your problem.
But together with the other caps they form a complex RLC network. What's the typical ESR of these caps so I can simulate it and look what happens there? CL<
