What is an effect of adding inductance to an antenna?

Adding inductance to an antenna primarily affects its resonance characteristics. Specifically, when inductance is introduced, it alters the resonant frequency of the antenna system. Inductance has the effect of increasing the impedance at higher frequencies, which can lead to a decrease in the resonant frequency of the antenna. This is because the relation between inductance and frequency is inversely proportional: as you add inductance, the resonant frequency shifts lower due to the reactive nature of inductors.

However, while the chosen answer mentions a decrease in frequency, it is important to note that the other answers also touch on different implications of changing inductance but do not directly address the fundamental impact on frequency as the question seeks to highlight. Increasing bandwidth, stabilizing impedance, and causing radiation losses can indeed occur with various configurations and uses of inductance, but the most direct effect of adding inductance is the shift in operating frequency, confirming the chosen response as a focal point of inductive changes.