(34C) Bandwidth considerations … to solve network equations

08022019, 04:43 PM
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(34C) Bandwidth considerations … to solve network equations
An extract from response of pi, piL and tandem quarterwaveline matching networks, HAM Radio magazine, volume 15, number 2, February 1982 {pgs. 1217}
… The reason is that considerable computation is involved to generate the response curves. With the availability of relatively lowcost programmable calculators such as the HP34C the problem becomes much simpler. This article presents the response characteristics of several commonly used pi and piL networks, developed with the aid of an HP34C program and the SOLVE capability of this machine for finding specific maxima, minima, and points on the curves … … Use of the polartorectangular (and vice versa) capabilities of the HP34C, and its ability to handle subroutines makes it feasible to construct a fairly simple program for finding the input impedance and all of its components: resistance, reactance, impedance and phase angle … … The maxima were discovered using the SOLVE program in the HP34C … … Again, the HP34C programmable calculator is of enormous value to study some typical cases … summary This article has attempted to shed some light on bandwidth considerations in pi, piL and tandemline matching systems. Intractable analytically, these various configurations are easily studied with the aid of the enormous computing power of the HP34C as a relatively inexpensive machine … Any programmers out there up to the challenge? BEST! SlideRule 

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