microwave measurements
Implementation of Microwave Measurements Using Novel Calibration Techniques
... Here we discuss a procedure for calibration of the VNA with respect to its applica- tion to the measurement of a Printed Circuit Board (PCB) discontinuities. The VNA calibration is done with coaxial standards but the PCB ...
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The effect of cloud liquid water on tropospheric temperature retrievals from microwave measurements
... temperature measurements from a microwave radiometer with radiosondes they have shown that the temperature profiles generally improve when a cloud model is considered in the ...the microwave ...
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Multifrequency polarimetric microwave measurements of the Greenland ice sheet
... of the content of the snowpack. The snowpack has a layered structure due to different snow densities which causes an impedance change for the radar at each layer interface. Studies of the stratigraphy of snow layers at ...
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Error analysis of Through Reflect Line method for calibrating microwave measurements.
... reflection standard value seen at the two ports of the network analyzer are not exactly same. The TRL calibration method is compared with the new calibration method, the TL calibration to explain why this calibration, ...
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An integrated approach toward the incorporation of clouds in the temperature retrievals from microwave measurements
... Figure 5a shows the temperature profiles retrieved from radiosonde and from TEMPERA radiometer using and with- out using cloud information in the forward model. The mea- surements were done on 21 November 2012 and an ILW ...
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Microwave radiometric measurements of soil moisture in Italy
... using microwave radiometers, were carried out in the Toce river valley (Lago Maggiore area) and on the Cerbaia agricultural area (Tuscany), within the framework of the Mesoscale Alpine Programme (MAP) and Runoff ...
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Measurements of Absolute Atomic Nitrogen Density by Two Photon Absorption Laser Induced Fluorescence Spectroscopy in Hot Air Plasma Generated by Microwave Resonant Cavity
... As is known, the classical optical emission spectroscopy (OES) can give direct access only to the radiative excited species not to the ground state species. In fact, OES allows the determination of absolute densities of ...
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Ferroelectric BaTiO3/SrTiO3 multilayered thin films for room temperature tunable microwave elements
... and microwave devices in control systems and wireless ...wireless microwave communications, such as room- temperature tunable microwave phase shifters, oscillators, filters, antennas, ...
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Mesospheric CO above Troll station, Antarctica observed by a ground based microwave radiometer
... Acknowledgements. We thank Anne K. Smith for providing the SD-WACCM data used in this paper and Patrick Erikson and Ole Martin Christensen for helpfull discussions on the data retrieval. In addition, we thank Mark ...
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Exploring The Universe With The Atacama Cosmology Telescope: Polarization-Sensitive Measurements Of The Cosmic Microwave Background
... The telescope’s Gregorian focus is reimaged by each optical chain using three plano-convex lenses whose position, orientation, and curved surface geometry is numerically optimized to yield high Strehl ratios and ...
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Dielectric characterization of vegetation at L band using an open-ended coaxial probe
... permittivity measurements can be of particular in- terest for the calibration and validation of microwave radia- tive transfer models for vegetation ...permittivity measurements make it possible to ...
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Cloud liquid water path in the sub-Arctic region of Europe as derived from ground-based and space-borne remote observations
... In order to evaluate possible diurnal cycles of LWP over St Petersburg, multiannual data of reanalysis were consid- ered. Two data sets were explored, ERA-Interim and MACC, both of which exploited an assimilation of ...
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An important step in microwave processing of materials: permittivity measurements of thermoplastic composites at elevated temperatures
... of microwave processing of certain fibre-reinforced thermoplastic (FRTP) composites but cannot provide definite answers to the ...Few measurements, if any, of the ε or the tan δ of FRTP composites have been ...
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Microwave Characterization of Activated Carbons
... permittivity measurements of activated carbons were in- vestigated using two different microwave measurement techniques, micro- wave cavity perturbation at ...Such measurements demonstrate the ...
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Microwave-Assisted Extraction of Phytochemicals in Cogongrass (Imperata cylindrica) Rhizome
... This decrease could be realized to the fact that with increase in temperature, the vapour pressure of water present inside the celery seeds increased leading to leaching out and evaporation of volatile oil along with ...
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Comparative Study of Microwave and Conventional Synthesis and Pharmacological activity of Coumarins : A Review
... MW assisted synthesis of 3-acetylcoumarins: 3-acetyl coumarin was synthesised by the reaction of salisaldehyde with ethyl acetoacetate in the presence of catalytic amount of piperidine. On the basis of the experimental ...
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A Novel Cross Layer Based Energy Conservative and Spectrum Allocation Algorithm for WANETs
... the microwave effect on Nitride semiconductors at high ...the microwave dielectric properties of the three samples. The microwave effect on these samples can be determined due to the variation in the ...
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Precipitation products from the hydrology SAF
... TRMM Microwave Imager (TMI) observations taken over the southern Mediterranean region (TRMM refers to the NASA-JAXA Tropical Rainfall Measuring Mission and the associated satellite observatory) have been compared ...
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Microwave absorption and radiation from large-area multilayer CVD graphene
... the microwave resonant cav- ity method to characterize the absorption effect of large-area graphene stacks from 1 to 5 layers, and extract their equiva- lent surface resistances which we compare with DC ...
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Microwave properties of superconducting MgB2
... Measurements of 10 GHz microwavesurface resistance, Rs, of dense MgB2wire and pellet are reported. Significant improvements are observed in the wire with reduction of porosity. The data lie substantially above the ...
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