As a part of a European Space Agency critical enabling technology programme, we are developing a large 1.2 m diameter reflective half-wave plate polariser for use in a spaceborne cosmic microwave background B-mode polarisation detection experiment. From an initial study phase we have established the polariser radio frequency performance requirements and present these along with corresponding room temperature measurements of a sample device in the frequency range 75-350 GHz. We briefly describe our measurement setup, and a new cryogenic facility that is being developed to allow low temperature performance measurements of device samples. Data acquired to date show that the polariser exhibits a near 150% bandwidth and meets key performance specifications associated with transmission, modulation efficiency and cross polarisation discrimination.
Millimetre-Wave Characterisation of an Embedded Reflective Half-Wave Plate for Spaceborne Cosmic Microwave Background Polarisation Measurements / Henry, M.; Ariyathilaka, P.; Willegers, M.; Jarvis, L.; Ellison, B.; Pisano, G.; Maffei, B.; Bernardis, P. de.; Piacentini, F.; Masi, S.; Pagano, L.; Maagt, P. de.; Shortt, B.. - (2015). (Intervento presentato al convegno 36th ESA Antenna Workshop on Antennas and RF Systems for Space Science tenutosi a ESTEC - Noordwijk, The Netherlands).
Millimetre-Wave Characterisation of an Embedded Reflective Half-Wave Plate for Spaceborne Cosmic Microwave Background Polarisation Measurements
G. Pisano;P. de. Bernardis;F. Piacentini;S. Masi;
2015
Abstract
As a part of a European Space Agency critical enabling technology programme, we are developing a large 1.2 m diameter reflective half-wave plate polariser for use in a spaceborne cosmic microwave background B-mode polarisation detection experiment. From an initial study phase we have established the polariser radio frequency performance requirements and present these along with corresponding room temperature measurements of a sample device in the frequency range 75-350 GHz. We briefly describe our measurement setup, and a new cryogenic facility that is being developed to allow low temperature performance measurements of device samples. Data acquired to date show that the polariser exhibits a near 150% bandwidth and meets key performance specifications associated with transmission, modulation efficiency and cross polarisation discrimination.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
