Modeling and measurement of IF gain bandwidth and intrinsic noise temperature for NbTiN hot electron bolometer mixers at Terahertz frequencies

2010 ◽  
Author(s):  
Jiang Ling ◽  
Fei Liu Yun ◽  
Satoshi Yamamoto
Keyword(s):  
Noise Temperature ◽  
Intrinsic Noise ◽  
Hot Electron ◽  
Gain Bandwidth ◽  
Hot Electron Bolometer ◽  
Terahertz Frequencies

Noise temperature distribution of superconducting hot electron bolometer mixers

2020 ◽  
Vol 29 (5) ◽  
pp. 058505
Author(s):  
Kang-Min Zhou ◽  
Wei Miao ◽  
Yue Geng ◽  
Yan Delorme ◽  
Wen Zhang ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Noise Temperature ◽  
Hot Electron ◽  
Hot Electron Bolometer

scholarly journals THz Mixing with High-TC Hot Electron Bolometers: a Performance Modeling Assessment for Y-Ba-Cu-O Devices

Photonics ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 7 ◽  
Author(s):  
Romain Ladret ◽  
Annick Dégardin ◽  
Vishal Jagtap ◽  
Alain Kreisler
Keyword(s):  
Chemical Reactivity ◽  
Hot Spot ◽  
Noise Temperature ◽  
Intrinsic Noise ◽  
Cotton Cloth ◽  
Superconducting Transition ◽  
Hot Electron ◽  
Aging Effects ◽  
Detection Scheme ◽  
High Tc

Hot electron bolometers (HEB) made from high-TC superconducting YBa2Cu3O7–x (YBCO) oxide nano-constrictions are promising THz mixers, due to their expected wide bandwidth, large mixing gain, and low intrinsic noise. The challenge for YBCO resides, however, in the chemical reactivity of the material and the related aging effects. In this paper, we model and simulate the frequency dependent performance of YBCO HEBs operating as THz mixers. We recall first the main hypotheses of our hot spot model taking into account both the RF frequency effects in the YBCO superconducting transition and the nano-constriction impedance at THz frequencies. The predicted performance up to 4 THz is given in terms of double sideband noise temperature TDSB and conversion gain G. At 2.5 THz for instance, TDSB  1000 K and G 6 dB could be achieved at 12.5 W local oscillator power. We then consider a standoff target detection scheme and examine the feasibility with YBCO devices. For instance, detection at 3 m through cotton cloth in passive imaging mode could be readily achieved in moderate humidity conditions with 10 K resolution.

Gain bandwidth of NbN hot-electron bolometer terahertz mixers on 1.5μm Si3N4∕SiO2 membranes

2007 ◽  
Vol 101 (12) ◽  
pp. 124508 ◽  
Author(s):  
S. Cherednichenko ◽  
V. Drakinskiy ◽  
J. Baubert ◽  
J.-M. Krieg ◽  
B. Voronov ◽  
...  
Keyword(s):  
Hot Electron ◽  
Gain Bandwidth ◽  
Hot Electron Bolometer

Noise and IF Gain Bandwidth of a Balanced Waveguide NbN/GaN Hot Electron Bolometer Mixer Operating at 1.3 THz

2018 ◽  
Vol 8 (3) ◽  
pp. 365-371 ◽  
Author(s):  
Sascha Krause ◽  
Denis Meledin ◽  
Vincent Desmaris ◽  
Alexey Pavolotsky ◽  
Hawal Rashid ◽  
...  
Keyword(s):  
Hot Electron ◽  
Gain Bandwidth ◽  
Hot Electron Bolometer

Noise temperature and local oscillator power requirement of NbN phonon-cooled hot electron bolometric mixers at terahertz frequencies

1998 ◽  
Vol 73 (19) ◽  
pp. 2814-2816 ◽  
Author(s):  
P. Yagoubov ◽  
M. Kroug ◽  
H. Merkel ◽  
E. Kollberg ◽  
G. Gol’tsman ◽  
...  
Keyword(s):  
Noise Temperature ◽  
Local Oscillator ◽  
Hot Electron ◽  
Power Requirement ◽  
Terahertz Frequencies

Nanostructured Ultrathin NbN Film as a Terahertz Hot-Electron Bolometer Mixer

2006 ◽  
Vol 935 ◽  
Author(s):  
Grigory Gol'tsman ◽  
Sergey Maslennikov ◽  
Matvey Finkel ◽  
Sergey Antipov ◽  
Natalia Kaurova ◽  
...  
Keyword(s):  
Buffer Layer ◽  
Noise Temperature ◽  
Quantum Limit ◽  
Superconducting Film ◽  
Hot Electron ◽  
Signal Loss ◽  
X Ray Diffraction ◽  
Spiral Antenna ◽  
Gain Bandwidth ◽  
X Ray

ABSTRACTPlanar spiral antenna coupled and directly lens coupled NbN HEB mixer structures are studied. An additional MgO buffer layer between the superconducting film and Si substrate is introduced. The buffer layer enables us to increase the gain bandwidth of a HEB mixer due to better acoustic transparency. The gain bandwidth is widened as NbN film thickness decreases and amounts to 5.2 GHz. The noise temperature of antenna coupled mixer is 1300 and 3100 K at 2.5 and 3.8 THz respectively. The structure and composition of NbN films is investigated by X-ray diffraction spectroscopy methods. Noise performance degradation at LO frequencies more than 3 THz is due to the use of a planar antenna and signal loss in contacts between the antenna and the sensitive NbN bridge. The mixer is reconfigured for operation at higher frequencies in a manner that receiver's noise temperature is only 2300 K (3 times of quantum limit) at LO frequency of 30 THz.

scholarly journals $\hbox{MgB}_{2} $ Hot-Electron Bolometer Mixers at Terahertz Frequencies

2015 ◽  
Vol 25 (3) ◽  
pp. 1-4 ◽  
Author(s):  
Stella Bevilacqua ◽  
Evgenii Novoselov ◽  
Sergey Cherednichenko ◽  
Hiroyuki Shibata ◽  
Yasuhiro Tokura
Keyword(s):  
Hot Electron ◽  
Hot Electron Bolometer ◽  
Terahertz Frequencies

Noise Temperature and Absorbed LO Power Measurement Methods for NbN Phonon-Cooled Hot Electron Bolometric Mixers at Terahertz Frequencies

1998 ◽  
Author(s):  
Harald F. Merkel ◽  
Pavel A. Yagoubov ◽  
Matthias Kroug ◽  
Pourya Khosropanah ◽  
Erik L. Kollberg ◽  
...  
Keyword(s):  
Noise Temperature ◽  
Measurement Methods ◽  
Power Measurement ◽  
Hot Electron ◽  
Terahertz Frequencies
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