Dielectric hollow antenna

摘要: A dielectric hollow antenna apparatus includes a inside tapered rod (e.g., waveguide) with flat section and cap. The further feed through section, pin, metal flange. low loss material fills the that protrudes beyond waveguide to form radiating element. element is designed in such way maximize radiation minimize reflections over bandwidth. reduces internal reflection include rectangular support propagation (TE01) mode then transitions circular supports another (TE11) mode. antennas can be employed for radar level gauging withstand high temperature possesses small diameter permits fit tank nozzles.