[SI-LIST] Re: SI software question thanks
- From: "Swanson, Dan" <Dan.Swanson@xxxxxxxxxx>
- To: "'Robison_M@xxxxxxxxxxxxxx'" <Robison_M@xxxxxxxxxxxxxx>,"'si-list@xxxxxxxxxxxxx'" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 13 Aug 2003 09:09:41 -0400
If you take a quarter wavelength line
and place a short at the end, it looks
like an open at the input. An open at
the output reflects back as a short.
True for odd multiples of lambda/4.
Can use same property to make a
narrow band impedance transformer.
Z of line = SQRT( Zin * Zout)
Dan
> -----Original Message-----
> From: Robison Michael R CNIN [mailto:Robison_M@xxxxxxxxxxxxxx]
> Sent: Wednesday, August 13, 2003 9:01 AM
> To: 'si-list@xxxxxxxxxxxxx'
> Subject: [SI-LIST] SI software question thanks
>
>
> I want to thank everybody who responded to my questions. Your
> answers have given me a number of places to look for SI training
> and I think I'll talk to Cadence about the Power software before
> we firm up our buy with them.
>
> Just reading the list has been enlightening. There are some things
> that just go right over the top of my head. For instance, the
> gentleman that mentioned the issue with placing his bypass caps
> a quarter wavelength away from the chip, and that turning a low
> impedance device into a high impedance device. What does the
> fractional distance of a wavelength have to do with impedance?
>
> Thanks, Michael Robison
> 812-854-4953
> Crane Naval Surface Warfare Center
>
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>
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