New hat feed for reflector antennas realised without dielectrics for reducing manufacturing cost and improving reflection coefficient
Journal article, 2011

This study presents a new hat feed that is made entirely of metal without using dielectric material. Compared to previous hat feeds where a piece of dielectric is used to support the hat on the waveguide, the new feed has lower manufacturing cost and higher reliability. In addition, the new hat feed has low radiation along the feeding waveguide, which makes the vertex plate unnecessary. Therefore the bandwidth over which the reflection coefficient magnitude is below -15 dB has increased. The feed has been optimised using a genetic algorithm. A prototype has been manufactured, and measured results are presented to verify the numerical simulations.


Wei Wei

Chalmers, Signals and Systems

Jian Yang

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

T. Östling

Arkivator AB

T. Schafer

Arkivator AB

IET Microwaves, Antennas and Propagation

1751-8725 (ISSN)

Vol. 5 7 837-843

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering



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