Strip Loaded Hollow Dielectric Sectoral Horn Antennas

Abstract

Radiation characteristics of hollow dielectric E-plane sectoral horn antenna loaded with metal sheet on the E walls have been discussed. Hollow dielectric horn with metal sheets of optimum length on the E walls which serve the purpose of a launcher becomes a highly directive Antenna. A gain of 3 dB to 5 dB over an ordinary metal born of same dimension is reported. Determination of optimum strip lengths for different flare angles are carried out with the assumption that the hollow dielectric horn is equivalent to a solid dielectric horn of varying effective dielectric constant ∈ff. Investigations are made with HP network analyser at different frequencies for various flare angles and strip lengths.

Indexing term:

• Microwave antennas