TY  - JOUR
AU  - Meledin, Denis
AU  - Pavolotsky, Alexey
AU  - Desmaris, Vincent
AU  - Lapkin, Igor
AU  - Risacher, Christophe
AU  - Perez, Victor
AU  - Henke, Douglas
AU  - Nystrom, Olle
AU  - Sundin, Erik
AU  - Dochev, Dimitar
AU  - Pantaleev, Miroslav
AU  - Fredrixon, Mathias
AU  - Strandberg, Magnus
AU  - Voronov, Boris
AU  - Goltsman, Gregory
AU  - Belitsky, Victor
PY  - 2009
DA  - 2009//
TI  - A 1.3-THz balanced waveguide HEB mixer for the APEX telescope
JO  - IEEE Trans. Microw. Theory Techn.
SP  - 89
EP  - 98
VL  - 57
IS  - 1
KW  - HEB
KW  - mixer
KW  - waveguide
KW  - balanced
KW  - NbN
AB  - In this paper, we report about the development, fabrication, and characterization of a balanced waveguide hot electron bolometer (HEB) receiver for the Atacama Pathfinder EXperiment telescope covering the frequency band of 1.25–1.39 THz. The receiver uses a quadrature balanced scheme and two HEB mixers, fabricated from 4- to 5-nm-thick NbN film deposited on crystalline quartz substrate with an MgO buffer layer in between. We employed a novel micromachining method to produce all-metal waveguide parts at submicrometer accuracy (the main-mode waveguide dimensions are 90×180 [mu]m). We present details on the mixer design and measurement results, including receiver noise performance, stability and “first-light” at the telescope site. The receiver yields a double-sideband noise temperature averaged over the RF band below 1200 K, and outstanding stability with a spectroscopic Allan time more than 200 s.
SN  - 0018-9480
UR  - http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4711147
UR  - https://doi.org/10.1109/TMTT.2008.2008946
DO  - 10.1109/TMTT.2008.2008946
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=554), last updated on Sun, 22 May 2016 16:12:17 -0500
ID  - Meledin_etal2009
ER  -