O'Brient, Roger, Ade, Peter A. R. ![]() |
Abstract
We are developing antenna‐coupled TES bolometers for CMB polarimetry that receive both linear polarizations over nearly two octaves of bandwidth. This ultra‐wide bandwidth is achieved with a novel adaptation of the sinuous antenna that integrates microstrip feed‐lines onto the arms of the antenna and uses a contacting extended hemispherical lens to focus the beam. It is challenging to achieve desirable antenna performance over such a wide band and our version of the sinuous antenna offers a unique solution. We have integrated this antenna with TES‐bolometers and report on a series of optical tests that demonstrate the antenna beams’s high symmetry, cross‐polarization rejection, gain, and optical efficiency over the operating band.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Publication |
Status: | Published |
Schools: | Schools > Physics and Astronomy |
Subjects: | Q Science > QB Astronomy |
Uncontrolled Keywords: | cosmic background radiation ; cryogenics ; SQUIDs |
Additional Information: | AIP Conference Proceedings |
Publisher: | American Institute of Physics |
ISBN: | 9780735407510 |
ISSN: | 0094243X |
Last Modified: | 21 Oct 2022 08:53 |
URI: | https://orca.cardiff.ac.uk/id/eprint/34695 |
Citation Data
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