archive-com.com » COM » T » TICRA.COM

Total: 410

Choose link from "Titles, links and description words view":

Or switch to "Titles and links view".
  • Model-Based System Engineering Components of Antennas | TICRA
    Antenna Modeling Library in which GRASP ADF and SATSim are key components However these models are not directly suitable for Phase 0 A and early Phase B activities in a Model Based System Engineering context where fast and reliable predictions with a known uncertainty margin are required in order to avoid over or under specification and reduce the risk of under or overdesign in later phases The Model Based System

    Original URL path: http://www.ticra.com/papers/model-based-system-engineering-components-antennas (2016-05-01)
    Open archived version from archive


  • Different Types of Circular Domain Wave-objects | TICRA
    simply obtained by first expanding the field spectrum in the aperture plane in terms of an angular Fourier series and next representing the radial spectral coefficients in terms of complex exponentials obtained by the Generalized Pencil of Function method GPOF method The starting radiation integral is this way reduced to a double sum of wave objects which can be computed analytically in both space and spectral domain The vector form

    Original URL path: http://www.ticra.com/papers/different-types-circular-domain-wave-objects (2016-05-01)
    Open archived version from archive

  • New Results from the SoftLAB Benchmark of Antenna Software | TICRA
    Multipole Method Near field Optimization Physical Optics Reflectarray Reflector antenna Scattering New Results from the SoftLAB Benchmark of Antenna Software Abstract This paper gives an overview of the antenna software benchmarking activity that took place within the Software Group of the EurAAP association in 2009 A particular focus is brought to one of the proposed test case that consists of a non conventional horn antenna Publication Proceedings of the 4th

    Original URL path: http://www.ticra.com/papers/new-results-softlab-benchmark-antenna-software (2016-05-01)
    Open archived version from archive

  • Prediction of the In-Flight Radiation Patterns of the Planck Telescope | TICRA
    Optics Reflectarray Reflector antenna Scattering Prediction of the In Flight Radiation Patterns of the Planck Telescope Abstract This paper summarises the work done over the last few years on the prediction of the RF performance of the Planck telescope which was done initially to support the design phase and later to assess compliance to specifications and to infer the in flight performance of the telescope once in its operational orbit

    Original URL path: http://www.ticra.com/papers/prediction-flight-radiation-patterns-planck-telescope (2016-05-01)
    Open archived version from archive

  • Papers | TICRA
    GHz 21 Oct 2001 Modelling of the Antenna to Range Coupling for a Compact Range Authors Frank Jensen Knud Pontoppidan Two ways of modelling a compact range design are presented and the coupling to a given antenna under test AUT is determined and compared to the AUT far field The compact range models 08 Jul 2001 On the use of FFT in surface shaping of contoured beam antennas Authors Stig Busk Sørensen Michael Lumholt Hans Henrik Viskum A comparison of the Fast Fourier Transform FFT and direct numerical integration to solve the PO integral is presented with special emphasis on the achieved accuracy and the CPU time consumption 08 Jul 2001 Multi Moded Horns in Reflector Antenna Systems exemplified by the Planck Telescope Authors Stig Busk Sørensen Per Heighwood Nielsen Knud Pontoppidan In this paper bolometric detectors applied in conjunction with reflector antenna feed horns that support multiple modes are studied As an example the preliminary design of the Planck telescope 08 Jul 2001 Design of terrestrial sector beam antennas using advanced spacecraft contoured beam synthesis software Authors Hans Henrik Viskum The design of a sector beam antenna is described The azimuth and elevation patterns are subject to stringent requirements on gain and isolation A PO based synthesis method is applied to generate 10 Sep 2000 Guidelines for the design of the serrations of a compact range Authors Knud Pontoppidan Per Heighwood Nielsen 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 Improved Compact Antenna Test Range CATR Performance by Using Spherical Angular Function SAF Deconvolution Method Authors Frank Jensen Microwave antenna measurements seek to determine the response of an Antenna Under Test AUT when it is illuminated

    Original URL path: http://www.ticra.com/papers?page=11 (2016-05-01)
    Open archived version from archive

  • Design, Trade-Off and Advantages of a Reconfigurable Dual Reflector for Ku Band Applications | TICRA
    a few cases replaced the array fed parabolic reflector antennas for contoured beam generation The evolution started in the 1990 es with the advent of efficient and reliable software to generate the desired reflector profile on the basis of the requirements to the orbital position of the satellite and the desired coverage areas on the ground The increased in orbit lifetime of today s telecommunication satellites combined with the rapid

    Original URL path: http://www.ticra.com/papers/design-trade-and-advantages-reconfigurable-dual-reflector-ku-band-applications (2016-05-01)
    Open archived version from archive

  • Feasibility Study and Sensitivity Analysis for a Reconfigurable Dual Reflector Antenna | TICRA
    Physical Optics Reflectarray Reflector antenna Scattering Feasibility Study and Sensitivity Analysis for a Reconfigurable Dual Reflector Antenna Abstract A feasibility study of a shaped dual reflector antenna equipped with a reconfigurable subreflector for a realistic mission scenario in Ku band is presented The reconfigurable surface will be modelled by a mesh of interwoven flexible wires supported by control points A detailed sensitivity analysis to actuator settings will be performed Publication

    Original URL path: http://www.ticra.com/papers/feasibility-study-and-sensitivity-analysis-reconfigurable-dual-reflector-antenna (2016-05-01)
    Open archived version from archive

  • A Singularity Extraction Technique for Computation of Antenna Aperture Fields from Singular Plane Wave Spectra | TICRA
    effective technique for extracting the singularity of plane wave spectra in the computation of antenna aperture fields is pro posed The singular spectrum is first factorized into a product of a finite function and a singular function The finite function is inverse Fourier transformed numerically using the Inverse Fast Fourier Transform while the singular function is inverse Fourier transformed analytically using the Weyl identity and the two resulting spatial functions

    Original URL path: http://www.ticra.com/papers/singularity-extraction-technique-computation-antenna-aperture-fields-singular-plane-wave (2016-05-01)
    Open archived version from archive



  •