Waveguide Slot Array calculator

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Mark GM4ISM has updated the W1GHZ design spreadsheet for waveguide slot arrays to add a drop-down menu of standard guide types and support for single-sided arrays, modifying the admittance values per slot. This version incorporates all of the improvements and calculation fixes to date. Note that this file contains some macros to generate graphics for round/square ended slots, so you may need to enable macros in Excel. The graphics may not work in LibreOffice Calc. http://dc2light.co.uk/SlottedWaveguide-2020.xlsm