Papers

Papers tagged with : Cross polarization

24
Mar
2017
Co-authors:
Olav Breinbjerg

Waveguides with anisotropic surface impedance boundaries have been investigated for the purpose of matched feeds for offset reflectors. Matched feeds employ higher order waveguide modes to cancel...

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...

01
Nov
2009

ESA’s Compact Antenna Test Range at ESTEC has been relocated which has given the chance to improve the alignment of the reflectors. Based on measurements of the reflector surfaces the best-fit...

04
Nov
2007
Authors:

Serrations are often applied at the edges of compact range reflectors in order to reduce the scattering from the edges into the quiet zone. At low frequencies the serrations show different...

18
Sep
2002

The analysis of a polarisation-sensitive reflector system consisting of two individual reflecting surfaces is described. A procedure is given by which all the predictable scattering effects that...

10
Sep
2000

Compact ranges based on reflector technology may be based on different designs: single offset reflec- tor, dual offset reflector compensated for cross polarisation or an offset dual reflector...

16
Jul
2000
Authors:

Microwave antenna measurements seek to determine the response of an Antenna Under Test (AUT), when it is illuminated by a uniform Plane Wave. The requirement of a uniform Plane Wave illumination...

18
Jun
1995

The paper demonstrates how multi-beam antennas used for contoured beams in communications satellites are capable of providing very high isolation to adjacent service areas, even with antenna...

18
Jun
1995

Contoured beam satellite antennas are usually designed by optimizing the antenna gain pattern over the desired coverage such that the minimum gain is maximized and the ripple throughout the region...

19
Jun
1994

Contoured beam antennas may conveniently be designed by shaping the reflector surface to produce a gain pattern which closely resembles the prescribed coverage area. The most appropriate technique...

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