Share Email Print
cover

Proceedings Paper

Sinuous antennas for cosmic microwave background polarimetry
Author(s): Roger O'Brient; Jennifer Edwards; Kam Arnold; Greg Engargiola; William Holzapfel; Adrian T. Lee; Michael Myers; Erin Quealy; Gabriel Rebeiz; Paul Richards; Helmuth Spieler; Huan Tran
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We are developing antenna-coupled Transition Edge Sensor (TES) bolometers to be used in the focal planes of telescopes mapping Cosmic Microwave Background (CMB) polarization anisotropies. These detectors will be both dual-polarized and ultra-wide band, each containing several frequency channels. Arrays of such detectors could realize mapping speeds nearly an order of magnitude higher than previously deployed technology while naturally facilitating foreground removal. For such detectors to be useful, the antennas must have a high gain and a low cross-polarization. We have designed a novel modification of DuHamel's Sinuous antenna that couples to a contacting lens and is driven by integrated microstrip feed-lines. The integrated feed lines allow the antenna to interface with microstrip circuits and bolometers in a way that is planar and scalable to kilo-pixel arrays. We have demonstrated the polarization and beam properties with scale model antennas that operate at 1-12 GHz.

Paper Details

Date Published: 19 July 2008
PDF: 11 pages
Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 70201H (19 July 2008); doi: 10.1117/12.788526
Show Author Affiliations
Roger O'Brient, Univ. of California, Berkeley (United States)
Jennifer Edwards, Univ. of California, San Diego (United States)
Kam Arnold, Univ. of California, Berkeley (United States)
Greg Engargiola, Univ. of California, Berkeley (United States)
William Holzapfel, Univ. of California, Berkeley (United States)
Adrian T. Lee, Univ. of California, Berkeley (United States)
Lawrence Berkeley National Lab. (United States)
Michael Myers, Univ. of California, Berkeley (United States)
Erin Quealy, Univ. of California, Berkeley (United States)
Gabriel Rebeiz, Univ. of California, San Diego (United States)
Paul Richards, Univ. of California, Berkeley (United States)
Helmuth Spieler, Lawrence Berkeley National Lab. (United States)
Huan Tran, Space Sciences Lab. (United States)


Published in SPIE Proceedings Vol. 7020:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV
William D. Duncan; Wayne S. Holland; Stafford Withington; Jonas Zmuidzinas, Editor(s)

© SPIE. Terms of Use
Back to Top