Journal
JOURNAL OF LOW TEMPERATURE PHYSICS
Volume 151, Issue 1-2, Pages 459-463Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-007-9698-x
Keywords
antenna-coupled bolometer; transition edge sensor; sinuous antenna; log periodic antenna; CMB polarization
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Funding
- STFC [PP/D001048/1] Funding Source: UKRI
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We are developing multi-band dual-polarized antenna-coupled transition edge sensor (TES) bolometers for observing Cosmic Microwave Background (CMB) polarization anisotropies. We have designed a prototype pixel that uses a dual-polarized log-periodic antenna on a silicon hemispherical lens. Each polarization is coupled onto a separate microstrip transmission line. Microstrip filters are used to divide the broadband output of this antenna into a set of narrow frequency bands centered at 90, 150, and 220 GHz with bandwidths of 20%. We report on the fabrication of these devices as well as the initial optical testing.
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