A 60-GHz SiGe Radiometer Calibration Switch Utilizing a Coupled Avalanche Noise Source
| العنوان: | A 60-GHz SiGe Radiometer Calibration Switch Utilizing a Coupled Avalanche Noise Source |
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| المؤلفون: | Wyman Williams, Nelson E. Lourenco, Christopher T. Coen, Milad Frounchi, Clifford D. Cheon, John D. Cressler |
| المصدر: | IEEE Microwave and Wireless Components Letters. 30:417-420 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Noise temperature, Noise measurement, business.industry, Heterojunction bipolar transistor, Ambient noise level, 020206 networking & telecommunications, 02 engineering and technology, BiCMOS, Condensed Matter Physics, Silicon-germanium, chemistry.chemical_compound, chemistry, 0202 electrical engineering, electronic engineering, information engineering, Optoelectronics, Insertion loss, Power dividers and directional couplers, Electrical and Electronic Engineering, business |
| الوصف: | This letter presents a novel implementation of a ${V}$ -band single-pole double-throw switch that facilitates the internal calibration of radiometers by integrating an ambient noise source and an avalanche noise source. The switch is implemented in a 0.13- $\mu \text{m}$ SiGe bipolar-CMOS (BiCMOS) process and uses a shunt topology with $\lambda $ /4 directional couplers that inject noise from the avalanche source. The avalanche source is implemented using the collector-base junction of a SiGe heterojunction bipolar transistor (HBT) and attains a measured excess noise ratio of 18.7 dB at 60 GHz. The switch achieves a midband insertion loss of 2.0 dB and an isolation of 22 dB at 60 GHz. An excess input-referred noise temperature of 620 K is added with the noise source ON. To the best of our knowledge, this is the first avalanche noise source using a diode-configured SiGe HBT and the first monolithic two-reference switch for calibrating millimeter-wave radiometers. |
| تدمد: | 1558-1764 1531-1309 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::330b799cd4f8d9985bfcc5a71fed9f04 https://doi.org/10.1109/lmwc.2020.2975735 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........330b799cd4f8d9985bfcc5a71fed9f04 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15581764 15311309 |
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