How would you change a dipole antenna to make it resonant on a higher frequency?

To make a dipole antenna resonant on a higher frequency, you would shorten its length. Dipole antennas operate most efficiently when they are approximately half the wavelength of the frequency they are intended to transmit or receive. Since frequency and wavelength are inversely related, increasing the frequency means the corresponding wavelength is shorter. As a result, to achieve resonance at a higher frequency, you need to reduce the physical length of the dipole antenna accordingly.

This principle is fundamental in antenna design; as you target higher frequencies, the dimensions of the antenna must decrease. Thus, shortening the antenna correctly aligns it with the desired frequencies for optimal performance.