DSpace
 

RRI Digital Repository >
04. Astronomy and Astrophysics >
Research Papers (A&A) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3894

Title: Development of THz waveguide NbTiN HEB mixers
Authors: Jiang, Ling
Shiba, S.
Shimbo, Ken
Sakai, Nami
Yamakura, Tetsuya
Sugimura, Mika
Ananthasubramanian, P.G.
Maezawa, H.
Irimajiri, Y.
Keywords: Terahertz
NbTiN film
Hot electron bolometer mixer
Issue Date: Jun-2009
Publisher: IEEE
Citation: IEEE Transactions on Applied Superconductivity, 2009, Vol.19, p301-304
Abstract: In this paper, we present the development of the waveguide niobium titanium nitride (NbTiN) superconducting hot electron bolometer (HEB) mixers, cryogenically cooled by a 4 K close-cycled refrigerator. The NbTiN thin film is formed on a crystalline quartz substrate by sputtering an NbTi target with the Ar and N2 gas at room temperature. The HEB mixer element is fabricated by using the 12 nm NbTiN film, and is mounted on a waveguide block. Measurement of a Fourier transform spectrometer shows that the response of the mixer is centered near 810 GHz with a bandwidth of about 500 GHz. The uncorrected DSB receiver noise temperature is measured to be 500 K, and the noise bandwidth is to be 1.4 GHz at 810 GHz. The present result shows that a good noise performance can be obtained for the NbTiN HEB mixer even with a relatively thick film (12 nm) fabricated at the room temperature.
Description: Open Access
URI: http://hdl.handle.net/2289/3894
ISSN: 1051-8223-P
1558-2515 -E
Alternative Location: http://adsabs.harvard.edu/abs/2009ITAS...19..301J
http://dx.doi.org/10.1109/TASC.2009.2019071
Copyright: © 2009 IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Raman Research Institute's's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
Appears in Collections:Research Papers (A&A)

Files in This Item:

File Description SizeFormat
2009_IEEE_V19_301.pdf1.18 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

    RRI Library DSpace