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The peculiar aspect of the I7SWX windom is the balun, wound on a simple ferrite rod, instead of the commonly used toroid

This antenna has in its main characteristic, the fact that with only 20 mtof space occupied it works the 80 meters

I made the Buddistick first, then later made the buddipole, both are easy to make and work well

The ATU design gives a reasonable 'Q' factor so you will have to tune it regularly, eurotherm PID controllers and a stepper-motor can make a good auto-ATU

The dipole antenna, here some reference data, pointers and ideas that may help you