Do you really need microstrip corners when protel can lay curved (fixed
width) tracks?

Don't want to teach you to suck eggs, but in case you don't know:
Try hitting [Shift]+[Space] a few times when laying tracks to alter the
placement mode.

Tom.


> -----Original Message-----
> From: Mark Richards [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, 1 August 2001 4:43 AM
> To: Protel EDA Forum
> Subject: [PEDA] Microstrip Corners (or "optimal" miters)
> 
> 
> Hello all,
>     I have been "lurking" for about a month, and I have 
> gained a lot of
> valuable information from the various topics. Now for my
> question/request: I am now doing a large number of RF and microwave
> designs. However, I end up spending a lot of time in AutoCAD creating
> microstrip features such as radial stubs and mitered corners. I then
> have to import these features in to Protel, which is a tremendous pain
> in the rear. I was impressed with some of the scripts I have seen on
> this list, such as the spiral inductor script.
>     Could something similar be done to generate microstrip 
> corners? How
> about radial stubs? The basic formula for the miter is: L = pi(W/4),
> where L is the length of the 45degree miter segment, and W is 
> the width
> of the microstrip or transmission line. I have no knowledge of Client
> Basic or Delphi, or I might give it a go myself. For the radial stub,
> the length of the stub is basically 1/2 wavelength of the target
> frequency, and the angle of the stub can be arbitrary. The wider the
> angle, the more broadband the stub. Disclaimer: I am not a RF 
> engineer,
> so I could be mistaken about some of the facts. However, I gleaned the
> miter formula and other info from "Electronid Equations Handbook", S.
> Erst, 1989.
> 
> --
> Mark Richards
> ON Semiconductor
> 5005 E. McDowell Road
> Phoenix, Arizona 85008
> Phone: 602.244.7267
> Pager: 866-208-9913
> 
> 

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