The History of Radiation from Leaky-Wave Antennas

Leaky-wave antennas (LWAs) are now widespread and designed over a wide frequency range, from microwaves up to optics. One of the attractive features of LWAs is their simple design process as a consequence of the accurate analytical description of their radiating features. In this work, we review from a historical perspective the milestones that characterized the mathematical description of radiation from LWAs, starting from the pioneering contributions of N. Marcuvitz and A. A. Oliner, until the more recent developments.