Longitudinal groove loading of a half-width microstrip leaky-wave antenna

Leaky-wave antennas provide advantages including high directivity, their relative broadband nature and their ability to scan the principle beam with frequency that may be useful for various applications. They can also be designed with different guiding structures. Half-width leaky-wave microstrip antennas have been studied extensively because of the simplicity of feeding them and the ease of fabricating them. They have found applications in communications systems and direction-finding.