Design and optimization of compact wideband hat-fed reflector antenna for satellite communications
Journal article, 2013

We present a new design of the hat-fed reflector antenna for satellite communications, where a low reflection coefficient, high gain, low sidelobes and low cross-polar level are required over a wide frequency band. The hat feed has been optimized by using the Genetic Algorithm through a commercial FDTD solver, QuickWave-V2D, together with an own developed optimization code. The Gaussian vertex plate has been applied at the center of the reflector in order to improve the reflection coefficient and reduce the far-out sidelobes. A parabolic reflector with a ring-shaped focus has been designed for obtaining nearly 100% phase efficiency. The antenna's reflection coefficient is below -17 dB and the radiation patterns satisfy the M-x standard co- and cross-polar sidelobe envelopes for satellite ground stations over a bandwidth of 30%. A low-cost monolayer radome has been designed for the antenna with satisfactory performance. The simulations have been verified by measurements; both of them are presented in the paper.

optimization

satellite ground stations

corrugated surfaces

reflector antennas

Antenna feeds

Author

Erik G Geterud

GlobalView Systems

Jian Yang

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

T. Östling

Arkivator AB

P. Bergmark

Art and Technology

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 61 1 125-133

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TAP.2012.2220113

More information

Latest update

7/2/2019 1