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  • News | TICRA
    on a compact reflector terminal serves to substantiate our repeated praise of CHAMP s accuracy 3 Jan 2013 ViRe is our new agent in Taiwan To consolidate our effort in Asia we have started 2013 by appointing ViRe Technologies as our agent for Taiwan 29 Nov 2012 CHAMP 3 release A revolution nothing less This is what our customers say when they see the new CHAMP release with TICRA s unique VariFlex system 27 Oct 2012 Next stop Nagoya On October 29 through November 2 the International Symposium on Antennas takes place in Nagoya Japan TICRA is represented by Drs 11 Oct 2012 AMTA 2012 Symposium 21 26 October Being the most significant and dedicated symposium for antenna measurements AMTA attracts engineers involved in antenna testing from all over the world 26 Sep 2012 The 2012 ESA Antenna Week at Estec 2 5 October ESA organize two workshops on antennas during the first week of October 28 Aug 2012 Further strengthening of our EM modeling capabilities We are pleased to welcome Niels Vesterdal as Research Engineer in our Software department Niels has a Ph D 5 Jul 2012 2012 AP S International Symposium was again a great success and according

    Original URL path: http://ticra.com/news/this.href%2C?page=3 (2016-05-01)
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  • News | TICRA
    Mar 2012 EuCap 2012 is under way As always TICRA is strongly represented at the European Conference on Antennas EuCap which this year takes place in Prague 26 30 March 20 Mar 2012 TICRA introduce free upgrade program for 32 bit licenses Today almost all new Windows based PCs are 64 bit platforms and come with 64 bit versions of the operating system 23 Feb 2012 European School of Antennas

    Original URL path: http://ticra.com/news/this.href%2C?page=4 (2016-05-01)
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  • Knud Pontoppidan | TICRA
    Optics GO are compared for analysis of dielectric lenses It is found that MoM can be used with normal computers for diameters 10 Jun 2007 Accurate analysis of a quasi optical network with a polarisation grid Authors Stig Busk Sørensen Hans Henrik Viskum Knud Pontoppidan In a quasi optical network the beams are usually focused and guided through the system by means of curved and planar mirrors Physical Optics PO is an accurate analysis tool for these elements 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 22 Jun 2003 Electrical properties of triaxially woven fabrics for reflector antennas Authors Knud Pontoppidan Hans Henrik Viskum The new light weight reflector antenna technology being used by several spacecraft companies requires accurate electromagnetic modelling of the reflector surface properties In particular the new 18 Sep 2002 Electrical analysis of light weight triangular weave reflector antennas Authors Knud Pontoppidan The new light weight reflector antenna technology being developed by several spacecraft companies requires accurate electromagnetic modelling of the reflector surface properties In particular 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 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

    Original URL path: http://ticra.com/company/staff/knud-pontoppidan?page=1 (2016-05-01)
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  • Knud Pontoppidan | TICRA
    understood The peak gain reduction is proportional to the surface error squared whereas the 04 Nov 1986 Reflector Antennas An Overview of Surface Distortion Effects Authors Knud Pontoppidan Reflector antenna surface distortions may be slowly varying rapidly varying systematic or random Typical examples of each of these types of surface distortions are presented and their 01 Jun 1985 Shaping of Dual Reflector Antennas for Improvement of Scan Performance Authors Niels

    Original URL path: http://ticra.com/company/staff/knud-pontoppidan?page=2 (2016-05-01)
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  • Per Heighwood Nielsen | TICRA
    S B Vesterdal N Viskum H H Zhou M History Papers 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 10 Sep 2000 Guidelines for the

    Original URL path: http://ticra.com/company/staff/per-heighwood-nielsen?page=1 (2016-05-01)
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  • On the use of FFT in surface shaping of contoured beam antennas | TICRA
    FFT in surface shaping of contoured beam antennas Abstract 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 The concept of second order FFT is introduced It is shown that the accuracy of FFT is not compatible with the accuracy requirements expected by analysis codes for satellite communication

    Original URL path: http://ticra.com/papers/use-fft-surface-shaping-contoured-beam-antennas (2016-05-01)
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  • Analysis of subreflectors for dual reflector antennas | TICRA
    copolar component Significant discrepancies may appear for the crosspolar component and it is necessary to introduce additional fringe currents in the PO solution If the subreflector is located in the near field of the feed special precautions must be taken One can either subdivide the feed aperture into a number of smaller subapertures for each of which standard GTD can be applied or an alternative and more efficient method is

    Original URL path: http://ticra.com/papers/analysis-subreflectors-dual-reflector-antennas (2016-05-01)
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  • A Compact Septum Polarizer | TICRA
    Multipole Method Near field Optimization Physical Optics Reflectarray Reflector antenna Scattering A Compact Septum Polarizer Abstract A waveguide polarizer with resonant notches in a septum is investigated The Wiener Hopf technique is employed to derive theoretical design data and the results are compared to experiments for a single notch and a double notch design It is concluded that the agreement is good and the design useful for narrowband applications Publication

    Original URL path: http://ticra.com/papers/compact-septum-polarizer (2016-05-01)
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