Submillimeter molecular spectroscopy with the Texas millimeter wave observatory radio telescope

1986 ◽  
Vol 310 ◽  
pp. 889 ◽  
Author(s):  
Robert B. Loren ◽  
Alwyn Wootten
Keyword(s):  
Millimeter Wave ◽  
Radio Telescope ◽  
Molecular Spectroscopy

Towards Breath Gas Analysis Based on Millimeter-Wave Molecular Spectroscopy

Frequenz ◽  
2018 ◽  
Vol 72 (3-4) ◽  
pp. 87-92 ◽  
Author(s):  
Nick Rothbart ◽  
Heinz-Wilhelm Hübers ◽  
Klaus Schmalz ◽  
Johannes Borngräber ◽  
Dietmar Kissinger
Keyword(s):  
Millimeter Wave ◽  
Frequency Tuning ◽  
Molecular Spectroscopy ◽  
Band System ◽  
Ambient Air ◽  
Gas Analysis ◽  
Gas Absorption ◽  
Minimum Detectable Concentration ◽  
Bicmos Technology ◽  
Breath Gas Analysis

Abstract Breath gas analysis is a promising non-invasive tool for medical diagnosis as there are thousands of Volatile Organic Compounds (VOCs) in human breath that can be used as health monitoring markers. Millimeter-wave/terahertz molecular spectroscopy is highly suitable for breath gas analysis due to unique fingerprint spectra of many VOCs in that frequency range. We present our recent work on sensor systems for gas spectroscopy based on integrated transmitters (TX) and receivers (RX) fabricated in IHP’s 0.13 μm SiGe BiCMOS technology. For a single-band system, spectroscopic measurements and beam profiles are presented. The frequency is tuned by direct voltage-frequency tuning and by a fractional-n PLL, respectively. The spectroscopic system includes a folded gas absorption cell with gas pre-concentration abilities demonstrating the detection of a 50 ppm mixture of ethanol in ambient air corresponding to a minimum detectable concentration of 260 ppb. Finally, the design of a 3-band system covering frequencies from 225 to 273 GHz is introduced.

A CMOS millimeter-wave transceiver embedded in a semi-confocal Fabry-Perot cavity for molecular spectroscopy

2016 ◽  
Vol 145 (7) ◽  
pp. 074201 ◽  
Author(s):  
Brian J. Drouin ◽  
Adrian Tang ◽  
Erich Schlecht ◽  
Emily Brageot ◽  
Q. Jane Gu ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Molecular Spectroscopy ◽  
Fabry Perot

scholarly journals Measurements of Antenna Surface for Millimeter-Wave Space Radio Telescope

2011 ◽  
Vol 63 (3) ◽  
pp. 475-480 ◽  
Author(s):  
Kazuhisa Kamegai ◽  
Masato Tsuboi ◽  
Akihiro Doi ◽  
Eiichi Sato
Keyword(s):  
Millimeter Wave ◽  
Radio Telescope ◽  
Space Radio Telescope ◽  
Wave Space ◽  
Antenna Surface

Photonic Millimeter-wave generation Developments for the ALMA Radio Telescope

2007 ◽  
Author(s):  
Hitoshi Kiuchi ◽  
Tetsuya Kawanishi ◽  
Masumi Yamada ◽  
Takahide Sakamoto ◽  
Masahiro Tsuchiya ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Radio Telescope ◽  
Wave Generation
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