The Hoverman UHF antenna design is not new. The original US patents #2918672 and #3148371 date back to no later than 1964 with Doyt Hoverman as inventor.

I attempt to build an HDTV 4 Bay Bow Tie Antenna. This type of antenna works as well or better than store bought antennas for HDTV reception.

Optimized stealth hawk design [SolidSignal]