CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Fast and Accurate Analysis of Reflector Antennas with Phased Array Feeds Including Multiple Reflections between Feed and Reflector

Oleg Iupikov (Institutionen för signaler och system, Antenner) ; Rob Maaskant (Institutionen för signaler och system, Antenner) ; Marianna Ivashina (Institutionen för signaler och system, Antenner) ; A. Young ; Per-Simon Kildal (Institutionen för signaler och system, Antenner)
IEEE Transactions on Antennas and Propagation (0018-926X). Vol. 62 (2014), 7, p. 3450 - 3462.
[Artikel, refereegranskad vetenskaplig]

Several electrically large phased array feed (PAF) reflector systems are modeled to examine the mechanism of multiple reflections between parabolic reflectors and low-and high-scattering feeds giving rise to frequency-dependent patterns and impedance ripples. The PAF current is expanded in physics-based macro domain basis functions (CBFs), while the reflector employs the physical optics (POs) equivalent current. The reflector-feed coupling is systematically accounted for through a multiscattering Jacobi approach. An FFT expands the reflector radiated field in only a few plane waves, and the reflector PO current is computed rapidly through a near-field interpolation technique. The FEKO software is used for several cross validations, and the convergence properties of the hybrid method are studied for several representative examples showing excellent numerical performance. The measured and simulated results for a 121-element Vivaldi PAF, which is installed on the Westerbork Synthesis Radio Telescope, are in very good agreement.



Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2014-09-24. Senast ändrad 2017-03-21.
CPL Pubid: 203202

 

Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för signaler och system, Antenner (2005-2014)

Ämnesområden

Informations- och kommunikationsteknik
Elektroteknik och elektronik

Chalmers infrastruktur

Onsala rymdobservatorium

Relaterade publikationer

Denna publikation ingår i:


Digital Beamforming Focal Plane Arrays for Radio Astronomy and Space-Borne Passive Remote Sensing