I've constructed hundreds of antennae in the past. Bowtie dipole arrays, biquads, parabolic reflector dipoles, straight up yagi, logarithmic yagi, log periodic, heliacal and simple 1/4 whips. So ...

This antenna is for the 2 M (144 MHz) amateur band, but since it’s based on the [WB0CMT] “ 7 dB for 7 bucks ” (PDF) design it should be easily modified for other frequencies.