Search Results - "Pontoppidan, Knud"

Multibeam Focal Plane Arrays With Digital Beamforming for High Precision Space-Borne Ocean Remote Sensing by Iupikov, Oleg A., Ivashina, Marianna V., Skou, Niels, Cappellin, Cecilia, Pontoppidan, Knud, van 't Klooster, Cornelis G. M.

“…The present-day ocean remote sensing instruments that operate at low microwave frequencies are limited in spatial resolution and do not allow for monitoring of…”
Get full text

Multi-Beam Focal Plane Arrays with Digital Beamforming for High Precision Space-Borne Remote Sensing by Iupikov, Oleg, Ivashina, Marianna, Skou, Niels, Cappellin, Cecilia, Pontoppidan, Knud, van ’t Klooster, Kees

“…The present-day ocean remote sensing instruments that operate at low microwave frequencies are limited in spatial resolution and do not allow for monitoring of…”
Get full text

Ultra-High-Performance C- and L-Band Radiometer System for Future Spaceborne Ocean Missions by Skou, Niels, Sobjaerg, Sten Schmidl, Kristensen, Steen Savstrup, Cappellin, Cecilia, Pontoppidan, Knud, de Lasson, Jakob Rosenkrantz, Ivashina, Marianna V., Iupikov, Oleg A.

“…A next-generation real-aperture spaceborne radiometer system for high-quality ocean measurements is discussed. Instead of illuminating the antenna reflector by…”
Get full text

Innovative Multi-Feed-Per-Beam Reflector Antenna for Space-Borne Conical-Scan Radiometers by de Lasson, Jakob R., Iupikov, Oleg, Ivashina, Marianna, Skou, Niels, Fiorelli, Benedetta

“…We present an antenna for use on conical-scan space-borne radiometers in C band and demonstrate that stringent radiometric requirements can be met. The antenna…”
Get full text

Fast and accurate analysis of reflector antennas with struts and satellite platform scattering by Vesterdal, Niels, Borries, Oscar, Min Zhou, Pontoppidan, Knud, Jorgensen, Erik

“…This paper presents two methods related to modelling of reflector antenna struts and surrounding structural features such as satellite platforms. One method is…”
Get full text

Combining GTD with MOM in analysing the scattering from the LICEF antennas on the SMOS satellite by Jensen, Frank, Pontoppidan, Knud

“…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…”
Get full text

Feasibility study and sensitivity analysis for a reconfigurable dual reflector antenna by Cappellin, C., Pontoppidan, K.

“…A feasibility study of a shaped dual reflector antenna equipped with a reconfigurable subreflector for a realistic mission scenario in Ku band is presented…”
Get full text

Applications of GTD to Antenna Problems by pontoppidan, Knud

“…A general computer program package based on the geometrical theory of diffraction (GTD) is presented. The programs are based on a modular approach such that a…”
Get full text

Reflection Properties of Infinite, Plane Double-Grid Reflectors by Pontoppidan, Knud

Get full text

Accurate analysis of a quasi-optical network with a polarisation grid by Sorensen, S.B., Viskum, H.-H., Pontoppidan, K.

“…It is demonstrated that if significant near-field effects are present, the local plane-wave PO method for non-perfectly conducting surfaces may become…”
Get full text

ACE Activity 2.3 structuring of wideband & multiband antenna research by Balling, P., Bonnedal, M., Craddock, I., Pontoppidan, K., Yaravoy, A.

“…Developments in wireless communications and sensing require increasingly wider frequency bands and that multiple junctions can be provided by a single antenna…”
Get full text

Reflector surface modelling - a European collaboration by Pontoppidan, K., Balling, P., Gerini, G., Maci, S., Sipus, Z., Sjoberg, D., Trinchero, D., Vipiana, F.

“…The topic of this paper is the work carried out in Work Package 2.3-2 of the EU network ACE. This work package is concerned with the modelling of the surfaces…”
Get full text

Multi-moded horns in reflector antenna systems exemplified by the Planck telescope by Bondo, T., Sorensen, S.B., Nielsen, P.H., Pontoppidan, K.

“…In this paper bolometric detectors applied in conjunction with reflector antenna feed horns that support multiple modes are studied. As an example, the…”
Get full text

Analysis of beam waveguides for reflector antenna systems by Lumholt, M., Pontoppidan, K., van t Klooster, K.

“…The purpose of the present paper is to describe computational methods for the analysis of a realistic beam waveguide (BWG) at X-band, using physical optics…”
Get full text

Backfire antennas with dipole elements by Nielsen, E., Pontoppidan, K.

“…A method is set up for a theoretical investigation of arbitrary backfire antennas based upon dipole structures. The mutual impedance between the dipole…”
Get full text