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  • Rolf Jørgensen | TICRA
    1977 Phone direct 45 3330 6749 Has been engaged in satellite antenna contoured beam design and development of computer code to support this design Has developed code for analysis of multibeam satellite antenna systems Is currently taking care of customer relations in connection with software delivery and support Papers 19 Jul 2015 Structural Design of the DTU ESA MM Wave Validation Standard Antenna Authors Rolf Jørgensen Co authors K Branner P Berring C M Markussen O S Kim S Pivnenko O Breinbjerg A new specially designed antenna to be used for inter comparisons and validation of antenna test facilities is under development in cooperation between DTU and TICRA under a contract from the 12 Apr 2015 DTU ESA Millimeter Wave Validation Standard Antenna mm VAST Detailed Design Authors Rolf Jørgensen Niels Vesterdal Co authors Oleksiy S Kim Sergey Pivnenko Olav Breinbjerg Kim Branner Peter Berring Christen Malte Markussen Maurice Paquay This paper describes the structural solution to meet these extremely strict stability requirements and the structural analyses done in order to verify that they can be met The paper also 12 Oct 2014 DTU ESA Millimeter Wave Validation Standard Antenna Requirements and Design Authors Niels Vesterdal Rolf Jørgensen Co authors

    Original URL path: https://www.ticra.com/company/staff/rolf-j-rgensen (2016-05-01)
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  • Design and Optimization of a Single-Layer Planar Transmit-Receive Contoured Beam Reflectarray with Enhanced Performanc | TICRA
    planar contoured beam reflectarray in Ku band The reflectarray is optimized to fulfill the requirements of a Direct Broadcast Satellite mission which covers a South American coverage in both transmit and receive frequency bands for dual linear polarization The reflectarray is designed using a direct optimization approach where all the array elements are optimized simultaneously thus resulting in a design with enhanced performance compared to designs obtained using a phase

    Original URL path: https://www.ticra.com/papers/design-and-optimization-single-layer-planar-transmit-receive-contoured-beam-reflectarray (2016-05-01)
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  • Papers | TICRA
    Vesterdal This paper presents two new modelling algorithms that were recently added to the commercially available GRASP software package for electrically large antenna and scattering problems In particular 12 Apr 2015 Design of a Push Broom Multi Beam Radiometer for Future Ocean Observations Authors Cecilia Cappellin Knud Pontoppidan Per Heighwood Nielsen Co authors N Skou S S Søbjærg A Ihle M Ivashina O Iupikov K v t Klooster The design of a push broom multi beam radiometer for future ocean observations is described The radiometer provides a sensitivity one order of magnitude higher than a traditional conical scanning 12 Apr 2015 Detailed Pattern Computations of the UHF Antennas on the Spacecraft of the ExoMars Mission Authors Cecilia Cappellin Erik Jørgensen Peter Meincke Oscar Borries Co authors C Nardini C Dreyer This paper describes the pattern computations of the UHF antennas mounted on the spacecraft of the EXOMARS mission The analyses are made by the higher order Method of Moments MoM add on to 12 Apr 2015 Analysis and Optimization of a Curved Transmit Receive Contoured Beam Reflectarray Authors Min Zhou Stig Busk Sørensen Oscar Borries Erik Jørgensen This paper presents the analysis and optimization of a 1 meter single layer curved contoured beam reflectarray in Kuband The curved reflectarray is designed to radiate a contoured beam over a 06 Nov 2014 Efficient Body of Revolution Method of Moments for Rotationally Symmetric Antenna Systems with Offset Illumination Authors Peter Meincke Erik Jørgensen An efficient Body of Revolution Method of Moments formulation is presented in which the unknown surface current density on the generatrix of the rotationally symmetric scatterer is expanded in 17 Oct 2014 Filtering of Measurement Noise with the 3D Reconstruction Algorithm Authors Cecilia Cappellin Two different antenna models are set up in GRASP and CHAMP and noise is added

    Original URL path: https://www.ticra.com/papers?page=1 (2016-05-01)
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  • Papers | TICRA
    Coverage Contoured Beam Reflectarray Authors Min Zhou Stig Busk Sørensen The design and optimization of a single layer multifaceted dual polarization contoured beam reflectarray with different coverages in each polarization has been presented The reflectarray is 07 Jul 2014 Gaussian Translation Operator for Multi Level Fast Multipole Method Authors Oscar Borries Stig Busk Sørensen Peter Meincke Erik Jørgensen Co authors P C Hansen Department of Applied Mathematics and Computer Science DTU Denmark Results using a new translation operator for the Multi Level Fast Multipole Method are presented Based on Gaussian beams the translation operator allows a significant portion of the plane wave 07 Apr 2014 Field Reconstruction and Estimation of the Antenna Support Structure Effect on the Measurement Uncertainty of the BTS1940 Antenna Authors Cecilia Cappellin The 3D reconstruction algorithm of DIATOOL is applied to the BTS1940 antenna recently measured at the DTU ESA Spherical Near Field Antenna Test Facility in Denmark The antenna was measured 07 Apr 2014 Generalized Admittance Matrix Method for Fast Full Wave Analysis of Integrated Lens Antennas Authors Erik Jørgensen Peter Meincke This paper presents an efficient technique for full wave analysis of dielectric lenses with integrated feeding The feeding section is analysed with a higher order 3D MoM algorithm while the 07 Apr 2014 Design and Optimization of Multi Faceted Reflectarrays for Satellite Applications Authors Min Zhou Peter Meincke Erik Jørgensen Stig Busk Sørensen The design and optimization of multi faceted reflectarrays for satellite applications are presented The objective of this work is to investigate the performance of a multi faceted reflectarray 07 Apr 2014 Efficient and Accurate Modeling of Electrically Large Dielectric Lens Antennas using Full Wave Analysis Authors Min Zhou Stig Busk Sørensen Peter Meincke Two efficient analysis methods for the accurate modeling of electrically large dielectric lens antennas are presented The

    Original URL path: https://www.ticra.com/papers?page=2 (2016-05-01)
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  • Papers | TICRA
    the reduced number of unknowns 27 Mar 2014 The Generalized Direct Optimization Technique for Printed Reflectarrays Authors Min Zhou Stig Busk Sørensen Erik Jørgensen Peter Meincke Co authors Oleksiy S Kim DTU Olav Breinbjerg DTU Giovanni Toso ESTEC A generalized direct optimization technique GDOT for the design of printed reflectarrays using arbitrarily shaped elements with irregular orientation and position is presented The GDOT is based 06 Oct 2013 Detailed Diagnostics of the BIOMASS Feed Array Prototype Authors Cecilia Cappellin Knud Pontoppidan The 3D reconstruction algorithm of DIATOOL is applied to the prototype feed array of the BIOMASS synthetic aperture radar recently measured at the DTU ESA Spherical Near Field Antenna Test 06 Oct 2013 A Detailed PO PTD GRASP Simulation Model for Compensated Compact Range Analysis with Arbitrarily Shaped Serrations Authors Hans Henrik Viskum Co authors Carsten Schmidt A Geise Astrium GmbH Compensated compact ranges offer accurate testing techniques for large devices under test The quiet zone field performance is affected by diffracted field components from the sub and main 10 Sep 2013 Array Diagnostics Spatial Resolution and Filtering of Undesired Radiation with the 3D Reconstruction Algorithm Authors Cecilia Cappellin Erik Jørgensen Peter Meincke This paper focuses on three important features of the 3D reconstruction algorithm of DIATOOL the identification of array elements improper functioning and failure the obtainable spatial 07 Jul 2013 CHAMP The Dedicated Design Tool for Rotationally Symmetric Horns and Reflector Terminals Authors Hans Henrik Viskum A fast and accurate approach to designing horns and reflectors is implemented in the CHAMP code The paper presents examples of designs including shaped reflectors and a horn with a dielectric 08 Apr 2013 Diagnostics of the BIOMASS Feed Array Prototype Authors Cecilia Cappellin Knud Pontoppidan Erik Jørgensen Peter Meincke The 3D reconstruction algorithm is applied to the prototype feed array

    Original URL path: https://www.ticra.com/papers?page=3 (2016-05-01)
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  • Papers | TICRA
    functions that are adapted to the circular 21 Oct 2012 Array Antenna Diagnostics with the 3D Reconstruction Algorithm Authors Cecilia Cappellin Peter Meincke Erik Jørgensen The 3D reconstruction algorithm is applied to a slotted waveguide array measured at the DTU ESA Spherical Near Field Antenna Test Facility One slot of the array is covered by conductive tape and 03 Oct 2012 Fast and Accurate Design Tool for Rotationally Symmetric Reflector Antennas with 3D Waveguide Components and Support Structures Authors Erik Jørgensen Peter Meincke We present a new efficient design tool for rotationally symmetric reflector antennas possibly including 3D support structures and waveguide components The tool is based on a combination of four 02 Oct 2012 Electrical Performance Verification Methodology for the P Band SAR Payload of the Biomass Candidate Mission Authors Knud Pontoppidan In this paper an electrical performance verification methodology is proposed for the large deployable reflector antenna of the BIOMASS P band 435 MHz synthetic aperture radar SAR The 02 Oct 2012 An Accurate and Efficient Design Tool for Large Contoured Beam Reflectarrays Authors Min Zhou Stig Busk Sørensen Erik Jørgensen Peter Meincke An accurate and efficient tool for the design of contoured beam reflectarrays is presented It is based on the Spectral Domain Method of Moments the Local Periodicity approach and a minimax 20 Jul 2012 Accurate and Efficient Analysis of Printed Reflectarrays With Arbitrary Elements Using Higher Order Hierarchical Legendre Basis Functions Authors Min Zhou Erik Jørgensen Stig Busk Sørensen Peter Meincke It is demonstrated that nonsingular higher order hierarchical Legendre basis functions are capable of accounting for the singularities of the electric currents at the edges of the reflectarray 13 Jul 2012 Advances in TICRA EM Tools Authors Hans Henrik Viskum Many exciting developments are underway at TICRA as evidenced by recent and upcoming releases

    Original URL path: https://www.ticra.com/papers?page=4 (2016-05-01)
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  • Papers | TICRA
    in commercial software tools developed by TICRA A major new area is design and analysis of printed 27 Mar 2012 Overview of the Latest Developments in the Electromagnetic Data Exchange Authors Poul Erik Frandsen This paper presents an overview of the last developments in the Electromagnetic Data Exchange EDX The EDX is a core activity of the EAML team in collaboration with the Working Group on Software 03 Mar 2012 Antenna Diagnostics on Planar Arrays Using a 3D Source Reconstruction Technique and Spherical Near Field Measurements Authors Erik Jørgensen Peter Meincke Cecilia Cappellin Oscar Borries In this paper we apply a recently developed 3D source reconstruction algorithm to perform antenna diagnostics on a planar array configuration The test case is a planar X band slot array measured 18 Oct 2011 Analysis of reflectarrays using field symmetries Authors Niels Christian Albertsen A new method to analyze reflectarrays with rectangular patches is proposed While the standard procedure has been to calculate the electric currents on the patches using e g a periodic Green s 18 Oct 2011 Recent Developments and Challenges for Reflector Antenna EM Modelling Authors Michael Lumholt Erik Jørgensen This paper concerns the EM modelling of high accuracy reflector antenna systems and in particular of reflectors for space antenna systems Recent modelling developments are exemplified ranging 18 Oct 2011 A Novel Accurate Pattern Fitting of Noisy Irregular Beam Data for the Planck Space Telescope Authors Oscar Borries Frank Jensen Per Heighwood Nielsen 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 Investigations on Accurate Analysis of Microstrip Reflectarrays Authors Min Zhou Stig Busk Sørensen An investigation on accurate analysis of microstrip reflectarrays is presented Sources of error in reflectarray analysis are

    Original URL path: https://www.ticra.com/papers?page=5 (2016-05-01)
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  • Papers | TICRA
    space community for advanced reflector antenna modeling The tool has furthermore found widespread use in the earth station 02 Jun 2011 An Accurate Technique for Calculation of Radiation From Printed Reflectarrays Authors Min Zhou Stig Busk Sørensen Erik Jørgensen Peter Meincke The accuracy of various techniques for calculating the radiation from printed reflectarrays is examined and an improved technique based on the equivalent currents approach is proposed The 11 Apr 2011 Accurate Fitting of Noisy Irregular Beam Data for the Planck Space Telescope Authors Oscar Borries Per Heighwood Nielsen Accurate fitting of the noisy irregular amplitude only main beam data is essential for the retrieval of the Planck space telescope geometry Therefore a novel two step fit ting algorithm which 11 Apr 2011 Advanced Processing of Measured Fields using Field Reconstruction Techniques Authors Erik Jørgensen Peter Meincke Cecilia Cappellin This contribution deals with the problem of reconstructing the extreme near field of an antenna starting from the field measured at a larger distance The presented method has several applications 11 Apr 2011 Analysis of Printed Reflectarrays Using Extended Local Periodicity Authors Min Zhou Stig Busk Sørensen Erik Jørgensen Peter Meincke An analysis technique for improved modeling of a printed reflectarray is proposed The technique is based on a periodic approach where periodicity is applied on an extended unit cell which 11 Apr 2011 Beam Waveguide Analysis Using Complex Conical Beams Authors Stig Busk Sørensen This paper presents a method of analysing beam waveguide systems based on Physical Optics and Complex Conical Beams The analysis procedure for one reflector consists of calculating the field 11 Apr 2011 Feed Array Design in Presence of Strong Scattering From Reflectors Authors Poul Erik Frandsen Stig Busk Sørensen Full wave reflectors antenna modelling especially when fed by strongly interacting radiating structures e g arrays coming

    Original URL path: https://www.ticra.com/papers?page=6 (2016-05-01)
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