Traveling-wave antenna
Traveling-wave antennas radiate by a wave traveling along a guiding structure. The RF current moves in one direction, so each wavefront passes once along the antenna. This is different from resonant antennas like monopoles or dipoles, where currents bounce back and forth and form standing waves. Because they are not resonant, traveling-wave antennas usually have a wider bandwidth. Common examples include the Beverage antenna, axial-mode helical antenna, and rhombic antenna. They fall into two main types: slow-wave antennas and fast-wave antennas (also called leaky-wave antennas).
This page was last edited on 3 February 2026, at 11:21 (CET).