Broadband Slotted Antenna
Abstract
An antenna capable of being joined to an antenna feed perpendicular to a ground plane includes a conductive radiator and a circular wafer surrounding the radiator. The radiator is tubular and has a longitudinal slot along the entire length thereof, parallel to the radiator's axis. The antenna feed can be connected across the slot. The wafer, made either or a conventional high dielectric isotropic material or of a uniaxialdielectric material, is spaced apart from the radiator and has a thickness approximately equal to the width of the slot, a diameter wherein a ratio of a diameter of the radiator to the diameter of the wafer is approximately 35%, and is located at a height above the ground plane equal to approximately 35% of the length of the radiator. The material of the wafer has a dielectric tensor with high polarizability in the axial direction and can be applied to preexisting antennas. This antenna gives enhanced bandwidth over ordinary slotted antennas.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 14, 2021
- Accession Number
- AD1150729
Entities
People
- Susan M. Safford
Organizations
- Naval Undersea Warfare Center