SSPP leaky-wave radiation based on sinusoidal imped ance modulation

Due to the high gain, low profile, and high directionality of the leaky-wave antenna (LWA), the leaky-wave antenna has received a lot of attention since it was proposed. In this paper, a leaky-wave antenna with an asymmetric S-shaped structure based on a sinusoidally modulated impedance surface is proposed. A periodic leaky-wave structure with a frequency of 8.5GHz, radiation angle of 33 degrees, and gain of 10dB is designed, and the calculated and simulated angles match. The scanning angle is about 18 degrees in the range of 1.5GHz from 7.5 to 9GHz of radiation frequency, which shows that the leakage antenna of this structure has good directionality and frequency sweep characteristics.