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  • Papers tagged with : Multilevel Fast Multipole Method | TICRA
    and Optimization of a Single Layer Planar Transmit Receive Contoured Beam Reflectarray with Enhanced Performanc Authors Min Zhou Oscar Borries Erik Jørgensen This paper presents the design and optimization of a 1 2 meters single layer planar contoured beam reflectarray in Ku band The reflectarray is optimized to fulfill the requirements of a Direct 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 12 Apr 2015 Fast and Accurate Analysis of Reflector Antennas with Struts and Satellite Platform Scattering Authors Niels Vesterdal Oscar Borries Min Zhou Knud Pontoppidan Erik Jørgensen This paper presents two methods related to modelling of reflector antenna struts and surrounding structural features such as satellite platforms One method is a MoM based strut model and 12 Apr 2015 New Fast and Robust Modelling Algorithms for Electrically Large Antennas and Platforms Authors Erik Jørgensen Oscar Borries Peter Meincke Min Zhou Niels 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 01 Oct 2014 Adaptive Grouping for the Higher Order Multilevel Fast Multipole Method Authors Oscar Borries Erik Jørgensen Peter Meincke Co authors P C Hansen Department of Applied Mathematics and Computer Science DTU Denmark An alternative parameter free adaptive approach for the grouping of the basis function patterns in the multilevel fast multipole method is presented yielding significant memory savings compared 01 Sep 2014 Multilevel Fast Multipole Method for Higher Order Discretizations Authors Oscar Borries Peter Meincke Erik Jørgensen Co authors P

    Original URL path: https://www.ticra.com/papers/42 (2016-05-01)
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  • Papers tagged with : Near field | TICRA
    BTS1940 antenna recently measured at the DTU ESA Spherical Near Field Antenna Test Facility in Denmark The antenna was measured 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 04 Apr 2012 Higher Order Basis Functions Applied to the Inverse Method of Moments for Inverse Source Problems Authors Oscar Borries Erik Jørgensen Peter Meincke Higher order basis functions are commonly used for discretization of surface integral equations which are typically solved by the Method of Moments MoM This leads to higher accuracy and lower 18 Oct 2011 Application of Advanced Field Reconstruction Algorithms Authors Cecilia Cappellin Peter Meincke Erik Jørgensen Hans Henrik Viskum A general accurate and efficient stand alone commercial program for antenna diagnostics DIATOOL has been developed by TICRA The software reconstructs the field or the equivalent currents on a 11 Apr 2011 Advanced Processing of Measured Fields using Field Reconstruction Techniques Authors Erik Jørgensen Peter Meincke Cecilia Cappellin This contribution deals

    Original URL path: https://www.ticra.com/papers/11 (2016-05-01)
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  • Papers tagged with : Optimization | TICRA
    of a Direct 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 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 07 Jul 2014 Design of Multi Faceted Dual Polarization Dual 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 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 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 07 Jul 2013 CHAMP The Dedicated Design Tool for Rotationally Symmetric Horns and Reflector Terminals

    Original URL path: https://www.ticra.com/papers/37 (2016-05-01)
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  • Papers tagged with : Physical Optics | TICRA
    were recently added to the commercially available GRASP software package for electrically large antenna and scattering problems In particular 07 Apr 2014 Reflector Antenna Analysis using Physical Optics on Graphics Processing Units Authors Oscar Borries Erik Jørgensen Peter Meincke Stig Busk Sørensen Co authors H H B Sørensen Department of Applied Mathematics and Computer Science DTU Denmark B Dammann Department of Applied Mathematics and Computer Science DTU Denmark P C Hansen Department of Applied Mathematics and Computer Science DTU Denmark The Physical Optics approximation is a widely used asymptotic method for calculating the scattering from electrically large bodies It requires significant computational work and little memory 07 Apr 2014 Novel Multi Beam Radiometers for Accurate Ocean Surveillance Authors Cecilia Cappellin Knud Pontoppidan Per Heighwood Nielsen Novel antenna architectures for real aperture multi beam radiometers providing high resolution and high sensitivity for accurate sea surface temperature SST and ocean vector wind OVW 03 Jul 2011 Efficient Analysis of Reflector Antennas using GRASP Authors Erik Jørgensen Hans Henrik Viskum Stig Busk Sørensen Peter Meincke 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 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 04 Nov 2007 Polarisation Dependent Scattering from the Serrations of Compact Ranges Authors Frank Jensen 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 10 Jun 2007 Accurate analysis of a quasi optical

    Original URL path: https://www.ticra.com/papers/7 (2016-05-01)
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  • Papers tagged with : Reflectarray | TICRA
    fulfill the requirements of a Direct 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 07 Jul 2014 Design of Multi Faceted Dual Polarization Dual 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 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 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 08 Apr 2013 Efficient Optimization of Large Reflectarrays Using Continuous Functions Authors Min Zhou Stig Busk Sørensen Erik Jørgensen Peter Meincke Two new efficient optimization schemes for direct optimization of printed reflectarrays are presented Instead of optimizing directly on the geometry of the array elements continuous functions 11 Feb 2013 Direct Optimization of Printed Reflectarrays for Contoured Beam Satellite Antenna Applications Authors Min Zhou Stig Busk Sørensen Erik Jørgensen Peter Meincke Co authors Oleksiy S Kim DTU Olav Breinbjerg DTU An accurate

    Original URL path: https://www.ticra.com/papers/12 (2016-05-01)
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  • Papers tagged with : Reflector antenna | TICRA
    Accurate Analysis of Reflector Antennas with Struts and Satellite Platform Scattering Authors Niels Vesterdal Oscar Borries Min Zhou Knud Pontoppidan Erik Jørgensen This paper presents two methods related to modelling of reflector antenna struts and surrounding structural features such as satellite platforms One method is a MoM based strut model and 12 Apr 2015 New Fast and Robust Modelling Algorithms for Electrically Large Antennas and Platforms Authors Erik Jørgensen Oscar Borries Peter Meincke Min Zhou Niels 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 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 Sergey Pivnenko Dept of Electrical Engng TUD Denmark Oleksiy Kim Dept of Electrical Engng TUD Denmark Olav Breinbjerg Dept of Electrical Engng TUD Denmark K Branner Dept of Wind Energy TUD Denmark C M Markussen Dept of Wind Energy

    Original URL path: https://www.ticra.com/papers/5 (2016-05-01)
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  • Papers tagged with : Scattering | TICRA
    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 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 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 first method is based on Double Physical Optics PO which takes into 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 06 Nov 2006 Combining GTD with Mom in Analysing the Scattering from the LICEF Antennas on the SMOS Satellite Authors Frank Jensen Knud Pontoppidan 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 Scattering from a Low Orbiting Satellite with Rotating Solar Array Authors Frank Jensen The radiation patterns of satellite antennas may be

    Original URL path: https://www.ticra.com/papers/19 (2016-05-01)
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  • Multi-Spot Beam Reflectarrays for Satellite Telecommunication Applications in Ka-Band | TICRA
    Telecommunication Applications in Ka Band Abstract This paper describes a reflectarray concept that can produce a full dual band transmit receive multiple spot beam coverage in Ka band using only two main apertures while maintaining single feed per beam operation The proposed concept combines the capabilities of the reflectarray and a parabolic surface enabling the antenna to radiate more than one beam types in the typical 4 color frequency polarization

    Original URL path: https://www.ticra.com/papers/multi-spot-beam-reflectarrays-satellite-telecommunication-applications-ka-band (2016-05-01)
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