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- MSTRIP.* - This program allows the user to enter
- data measured from a piece of double-sided copper-clad PC
- board (ie. capacitance measured between the two sides and
- physical dimensions). Using this data, the program computes
- an effective permitivity for the dielectric. The user can
- then go into another section of the program and find widths
- of microstrip lines of given impedences using the entered and
- computed data.
-
- The equations used in this program were taken from
- "Synthesize and Analyze Microstrip Lines", Microwaves and RF
- magazine, Jan 1985, pgs. 111-116 and the book Physics
- by Halliday and Resnick. Other articles also discuss this
- technique of finding the relative permitivity.
-
- The scenerio for use is: an engineer wants to do some
- design work involving microstrip. He obtains a rectangular
- piece of double-sided copper-clad circuit board, hopefully
- labelled with the appropriate design data needed (relative
- permittivity, dielectric thickness, etc). In any case, the
- engineer measures the capacitance between the two plates,
- then takes measurements of the physical size and dielectric
- thickness of the board. Entering the appropriate data when
- prompted, this program will generate a value for the relative
- permittivity of the dielectric. The operator can use this
- data in the same program to design microstrip lines of
- various characteristic impedences.
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