Company

Frank Jensen

Position: Senior Research Engineer
Education: M.Sc.,Ph.D., Electrical Engineering
Specialization: Spherical near-field far-field theory, probe design and calibrations, measurement techniques, antenna coupling, platform scattering (GTD)
With TICRA since: 1972
Phone (direct): +45 3330 6747
Frank has worked with analysis of antenna inaccuracies, especially evaluation of compact test range performances with emphasis on methods for correcting the measurements for the defects of the range. He has worked within diffraction theory with special emphasis on automatic ray tracing in complex structures typically present for antennas on a satellite platform. In his Ph.D. he developed the basis for the spherical near-field to far-field transformation. This started his special interest within the area of near-field antenna measurements with emphasis on mechanical and electrical tolerance analysis and simulations on spherical and planar test set-ups. Further, he has designed and constructed high precision dual-polarized probes especially for near-field measurements. In 1972-81 he was adjoined as teacher in computer science and simulation techniques at Roskilde University Center.

Papers

18
Oct
2011

Kriging fitting, originally developed for geological exploitation, is here applied for fitting an expected pattern to noisy, irregular in-flight measurements of a satellite antenna...

18
Oct
2011

In-flight measurements of satellite antenna patterns are often given in a highly irregular grid and the data may be influenced by severe noise such that an accurate pat-tern determination is...

10
Oct
2010

The in-flight pattern measurements of a sub-millimetre space telescope may be improved by determining the actual reflector anomalies and then include the knowledge to these in the final pattern de...

12
Apr
2010

It is important to know the antenna patterns for the Planck Space Telescope with high accuracy for detectors operating at frequencies from 30 to 857 GHz. This could not be achieved with sufficient...

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...

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...

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...

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...

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