標題: | A 183-GHz InP/CMOS-Hybrid Heterodyne-Spectrometer for Spaceborne Atmospheric Remote Sensing |
作者: | Kim, Yanghyo Zhang, Yan Reck, Theodore James Nemchick, Deacon J. Chattopadhyay, Goutam Drouin, Brian Chang, Mau-Chung Frank Tang, Adrian 交大名義發表 National Chiao Tung University |
關鍵字: | Allan deviation;analog-to-digital converter (ADC);complimentary metal-oxide-semiconductor (CMOS);fast Fourier transform (FFT);frequency switching;frequency synthesizer;heterodyne receiver;indium phosphide (InP) low-noise amplifier (LNA);noise temperature;power spectral density (PSD);remote sensing;rotational spectroscopy;spectrometer |
公開日期: | 1-May-2019 |
摘要: | Acomplete 183-GHz CMOS/Indium Phosphide (InP) hybrid heterodyne-spectrometer is realized for spaceborne atmospheric remote sensing applications. It captures spontaneous emission from thermally populated pure rotational states for investigating Earth/planetary atmosphere and interstellar media. Recent missions such as the heterodyne instrument for far-infrared, the microwave limb sounder, and the microwave instrument for Rosetta orbiter highlighted the wealth of scientific knowledge that can be attained by utilizing heterodyne-spectrometers. However, major challenges still remain in mission cost, instrument size, weight, and power (SWaP). Highly integrated CMOS circuits are designed to prototype a low-cost/SWaP spectrometer system and conduct challenging science missions. Within the prototype system, a 183-GHz receiver with a frequency synthesizer is designed in the 28-nm CMOS, and a back-end 6-GS/s 4096-point spectrometer processor is designed in the 65-nm CMOS. The receiver's center frequency is tunable from 180 to 200 GHz. An external InP low-noise amplifier is added at the front-end to provide the required receiver sensitivity. The demonstrated 28-nm CMOS receiver and 65-nm CMOS spectrometer consume 515 mW under 1.5/1.15-V and 1500 mW under 1 V supply, respectively. The complete system achieves 700 to 1000 K noise temperature within the interested bandwidth and RMS uncertainty improvement up to 10 s integration according to the Allan deviation measurements. The spectrometer's capability in detecting gas phase molecular compounds is verified with laboratory trials employing water (H2O) and methyl-cyanide (CH3CN). |
URI: | http://dx.doi.org/10.1109/TTHZ.2019.2910988 http://hdl.handle.net/11536/151975 |
ISSN: | 2156-342X |
DOI: | 10.1109/TTHZ.2019.2910988 |
期刊: | IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY |
Volume: | 9 |
Issue: | 3 |
起始頁: | 313 |
結束頁: | 334 |
Appears in Collections: | Articles |