Papers

Papers tagged with : GTD

22
Mar
2017
Co-authors:
David Marote Alvarez, Marc Bergada, Raquel Gonzalez, Peter de Maagt

We report an RF study at 50 GHz of the Ice Cloud Imager, consisting of a parabolic reflector inside a semiclosed sun shield, as obtained with full-wave method of moments (MoM) and the asymptotic...

06
Oct
2015

Modeling the optical system on the Planck Space Telescope pre-launch was a very demanding task, with the huge electrical size, the strict accuracy requirements and the complicated feed arrangement...

03
Jul
2011

GRASP has for many years constituted the de facto standard in the space community for advanced reflector antenna modeling. The tool has furthermore found widespread use in the earth station...

16
Nov
2008

A compact antenna test range has been analysed for stray signals. The analysis is based on GTD ray tracing, i.e. obeying the reflection law in the chamber walls and assuming straight edges of...

06
Nov
2006

The present paper describes the determination of the scattering from the LICEF antenna elements on the SMOS satellite taking into account that the solar panels rotate during the flight of the...

31
May
2005
Authors:

The radiation patterns of satellite antennas may be highly influenced by scattering in the satellite, its payload and its solar array. By ray tracing techniques (GO/GTD) and applying orbit...

23
Feb
2005
Authors:

The radiation patterns of satellite antennas may be highly influenced by scattering in the satellite, its payload and its solar array. By ray tracing techniques and ap-plying orbit data it is...

04
Oct
1999
Authors:

Modelling of the field in the quiet zone (QZ) of a compact range is a difficult task since the edges of the range reflectors are designed not to radiate into the quiet zone. As a consequence the...

01
Jun
1997

The scattered far field from a halfwave dipole illuminating a perfectly conducting quarterplane is calculated. The calculation is based on a calculation of the radial electric and magnetic field...

28
Jun
1993

Spacecraft antennas with elliptical beams, low cross polarization and low side lobes can be designed systematically using Geometrical Optics (Viskum et al, 1992). By controlling the amplitude...

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