Improved 20- to 32-GHz atmospheric absorption model
نویسندگان
چکیده
منابع مشابه
A 20–32-GHz Wideband Mixer With 12-GHz IF bandwidth in 0.18- m SiGe Process
This paper presents a 20–32-GHz wideband BiCMOS mixer with an IF bandwidth of 12 GHz. The mixer utilizes an inductive peaking technique to extend the bandwidth of the downconverted IF signal. To our knowledge, the proposed mixer achieves the widest IF bandwidth using silicon-based technologies in -band. Analytical expressions for the conversion gain and output noise of the proposed mixer are pr...
متن کاملFinite Element Model for Atmospheric IR-Absorption
The updating concerns mainly the sensitivity analysis. The model is not anymore monochromatic, the system matrix K is now calculated separately for the two contributions water vapor and CO2 : K=KH2O+KCO2. The contribution of 0.04 % CO2 is small as compared to the contribution of 3.5 % water vapor: for the global and annual mean evacuation the contributions of CO2 and water vapor could be dealt ...
متن کاملAn improved structure models to explain retention behavior of atmospheric nanoparticles
The quantitative structure-retention relationship (QSRR) of nanoparticles in roadside atmosphere against the comprehensive two-dimensional gas chromatography which was coupled to high-resolution time-of-flight mass spectrometry was studied. The genetic algorithm (GA) was employed to select the variables that resulted in the best-fitted models. After the variables were selected, the linear multi...
متن کاملISSCC 2008 / SESSION 20 / WLAN / WPAN / 20 . 6 20 . 6 A 0 . 6 V 32 . 5 mW Highly Integrated Receiver for 2 . 4 GHz ISM - Band Applications
We explore the challenges of designing RF transceivers for an ultra-low-voltage (ULV) supply with performance that is compatible to commercial standards. The ITRS roadmap projects that the aggressive device size scaling will result in supply voltage reductions to well below 1V, in particular for low-power technologies. The use of alternative energy sources also requires ULV operation in some ap...
متن کاملAbsorption Cross - Sections NO 2 , 02 , and H 20 of Atmospheric Constituents :
Absorption spectroscopy, which is widely used for concentration measurements of tropospheric and stratospheric compounds, requires precise values of the absorption cross-sections of the measured species. NO v 02 and its collision-induced absorption spectrum, and H20 absorption cross-sections have been measured at temperature and pressure conditions prevailing in the Earth's atmosphere. Correcti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Radio Science
سال: 1998
ISSN: 0048-6604
DOI: 10.1029/98rs01941