Title :
Multimode horn antennas for far-infrared astronomy
Author :
Murphy, J.A. ; Bracken, C. ; Doherty, S. ; McAuley, I. ; Wilson, D. ; O´Sullivan, C. ; Trappe, N. ; Gradziel, M. ; Ade, Peter ; Gleeson, E. ; Maffei, Bruno ; Lamarre, J.-M. ; Noviello, F. ; Peacocke, T. ; Pisano, Giampaolo ; Puget, J.-L. ; Savini, Giorgio
Author_Institution :
Exp. Phys. Dept., Nat. Univ. of Ireland Maynooth, Maynooth, Ireland
Abstract :
Multi-mode horns combined with bolometric or incoherent detectors are finding application in astronomical receivers for which partially coherent operation can provide increased throughput and thus sensitivity. This is advantageous when observing faint sources, especially if diffraction limited resolution is not required, or if the horn beam is truncated by a cold stop in the optical train. We discuss how such horns can be simulated and present examples from receiver instrumentation on the Planck and SPICA space telescopes.
Keywords :
bolometers; horn antennas; radioastronomical techniques; radioastronomy; Planck and SPICA space telescopes; astronomical receivers; bolometric detectors; far-infrared astronomy; horn beam; incoherent detectors; multimode horn antennas; optical train; receiver instrumentation; Astronomy; Detectors; Educational institutions; Electromagnetic waveguides; Optical filters; Scattering; far-infrared astronomy; horn antenna; multimode;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6902348
