Automated Smith Chart for use in matching electronic components. Supports importation of Touchstone files, thereby allowing matching of two port networks. Allows generation of noise, gain and stability circles, as well as noise figure, gain and stability plots over frequency.
Added n:1 and 1:n Transformer Elements
Ratings and Reviews
Smith Chart works as well as comparable commercial programs costing thousands of dollars. In any microwave/rf matching circuit of useful utility, it is common to use a resistive element, sometimes to broaden the Q and sometimes because of bias circuit requirements. I would have complained had a resistive element NOT been included since it is so basic to bias networks. I have run Smith on an iMac and MacBook Pro and have never experienced any rendering programs. The user interface is comparable to commercial programs one uses in industrial development. Overall, this program is a tremedous bargain for the price. Five stars...
Does a good job
Looks like most of the issues with version 3.3 that were mentioned in the reviews have been fixed in version 3.4. I am very pleased with the application so far.
this is a rare case where I wish the process to demand a refund was simple. the shortcomings of this program are numerous. generally it appears to be technically correct although with occasional (and survivable) rendering problems where arcs appear as PWL/polygons. i'm not sure of the need for resistive elements in matching networks but maybe that's just my particular work. however the authors are very presumptuous by (a) forcing you to use their preferred units (nH, pF) with no way to change them, and then (b) showing a limited number of digits in the display of units such that if you enter ".001" it shows up as zero.
another set of shortcomings is the ignoring of Mac programming standards- for example, one should be able to edit matching elements by double-clicking on the element list (but no, you have to hit the "Edit elements" button). speaking of buttons, does the layout really follow any rules of logic? Inductor and resistor options are side-by-side but capacitor choices are vertical. plus the button labels are labelled in a way that makes using them tiresome because you have to read 3 words on each label to find the one you want. they could easily be laid out in rows of R, L and C, and then columns of series and shunt. color coding or grouping wouldn't hurt. another irritation is that is no user control for the smith chart appearance so you have to contend with bright green admittance lines on a white background- ugh. the lack of user-definable colors is simply lazy.
i could go on but i think the point is made. a much better *free* option is linsmith via fink (although not 10.7 compatible yet, my main reason for trying SCFM). Until Seward Salvage can match half the features of linsmith, my reccommendation is to skip SCFM.
With Family Sharing set up, up to six family members can use this app.