Ken-

If this is a surface microstrip? Depending on the w/h ratio and more
importantly the line width, and material type
tighter tolerances can be achieved.
I agree with Dave it can be expensive, given the wrong sets of circumstances.


At 02:50 PM 8/26/99 -0700, you wrote:
>Experts,
>We have couple of RF boards which are relatively new to us. Many times, we
>have to replace passive components to make it work. Hence, I have this
>hypothetical question for you. Is it due to not having correct impedance
>value even though measured value on coupon falls within 50+/-10 ohms%? Do
>you think we may to have tighten our current impedance specification
>(50+/-10 ohms%) if there is a relationship?
>
>Being a mechanical kind of guy this question may sound stupid! Hope to hear
>from many of you.
>
>re,
>ken patel
>______________________________________________________
>Ken Patel                       Phone:  (408) 490-6804
>1708 McCarthy Blvd.             Fax:    (408) 490-6859
>Milpitas, CA 95035              Beeper: (888) 769-1808
>
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Ian A. McMillan
Engineer
Herco Technology

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