Silicon-based antenna-coupled polarization-sensitive millimeter-wave bolometer arrays for cosmic microwave background instruments
Silicon-based antenna-coupled polarization-sensitive millimeter-wave bolometer arrays for cosmic microwave background instruments
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用于宇宙微波背景仪器的硅基天线耦合偏振敏感毫米波测辐射热计阵列
DOI:
10.1117/12.2234308
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Colazo, Felipe A.
中科院分区:
文献类型:
--
作者:
Holland, Wayne S.;Zmuidzinas, Jonas;Rostem, Karwan;Ali, Aamir;Appel, John W.;Bennett, Charles L.;Brown, Ari;Chang, Meng-Ping;Chuss, David T.;Colazo, Felipe A.
We describe feedhorn-coupled polarization-sensitive detector arrays that utilize monocrystalline silicon as the dielectric substrate material. Monocrystalline silicon has a low-loss tangent and repeatable dielectric constant, characteristics that are critical for realizing efficient and uniform superconducting microwave circuits. An additional advantage of this material is its low specific heat. In a detector pixel, two Transition-Edge Sensor (TES) bolometers are antenna-coupled to in-band radiation via a symmetric planar orthomode transducer (OMT). Each orthogonal linear polarization is coupled to a separate superconducting microstrip transmission line circuit. On-chip filtering is employed to both reject out-of-band radiation from the upper band edge to the gap frequency of the niobium superconductor, and to flexibly define the bandwidth for each TES to meet the requirements of the application. The microwave circuit is compatible with multi-chroic operation. Metalized silicon platelets are used to define the backshort for the waveguide probes. This micro-machined structure is also used to mitigate the coupling of out-of-band radiation to the microwave circuit. At 40 GHz, the detectors have a measured efficiency of ∼90%. In this paper, we describe the development of the 90 GHz detector arrays that will be demonstrated using the Cosmology Large Angular Scale Surveyor (CLASS) ground-based telescope.
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DOI:
10.1063/1.3700812
发表时间:
2012
期刊:
The Review of scientific instruments
影响因子:
--
作者:
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1982
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2008-01
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2006
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1991
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