Attenuation

View this topic in
In physics, attenuation (in some contexts also called extinction) is the gradual loss in intensity of any kind of flux through a medium. (Wikipedia.org)






Conferences related to Attenuation

Back to Top

2020 IEEE 16th International Workshop on Advanced Motion Control (AMC)

AMC2020 is the 16th in a series of biennial international workshops on Advanced Motion Control which aims to bring together researchers from both academia and industry and to promote omnipresent motion control technologies and applications.


2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.


2019 13th European Conference on Antennas and Propagation (EuCAP)

The conference provides an overview of the state of the art developments and innovations in Antennas, Propagation, and Measurements, highlighting the latest requirements for future applications.


2019 93rd ARFTG Microwave Measurement Conference (ARFTG)

The main theme of this conference is microwave measurements. Technical papers are soliciteddescribing original work in the areas of measurementrequirements for new, emerging, and developing technologies including, but not limited to,medical/biological areas, nanomaterials, graphene and related materials, and THz and relatedhigh frequency areas. Topics of particular interest include: Materials measurements foremerging technologies, Measurements in extreme impedance environments, mm-wave/THzand other higher frequency measurement measurements in highly nonlinear environments, deembeddingand correction methods for complex interfaces/fixtures, and all areas of RF,microwave and/or millimeter wave measurement.

  • 2018 91st ARFTG Microwave Measurement Conference (ARFTG)

    The main theme of this conference is microwave measurements. Technical papers are solicited describing original work in the areas of measurementtechniques and solutions for new, emerging, and developing technologies including, but not limited to, 5G wireless communications, biomedical areas, nanomaterials, graphene and related materials, and THz and relatedhigh frequency areas. Topics of particular interest include: Materials measurements foremerging technologies, Measurements in extreme impedance environments, mm-wave/THz measurements, measurements in highly nonlinear environments, deembedding and correction methods for complex interfaces/fixtures, and all areas of RF,microwave and/or millimeter wave measurement.

  • 2017 89th ARFTG Microwave Measurement Conference (ARFTG)

    The main theme of this conference is microwave measurements. Technical papers are solicited describing original work in the areas of measurement requirements for new, emerging, and developing technologies including, but not limited to, medical/biological areas, nanomaterials, graphene and related materials, and THz and related high frequency areas. Topics of particular interest include: Materials measurements for emerging technologies, Measurements in extreme impedance environments, mm-wave/THz and other higher frequency measurement measurements in highly nonlinear environments, de-embedding and correction methods for complex interfaces/fixtures, and all areas of RF, microwave and/or millimeter wave measurement.

  • 2016 87th ARFTG Microwave Measurement Conference (ARFTG)

    The main theme of this conference is microwave measurements for emerging communications technologies.Technical papers are solicited describing original work in the areas of measurementrequirements for new, emerging, and developing technologies for communications systems including, but not limited to: 5G, millimeter-wave and THz technologies, high data rate optical communications, nanomaterials, graphene and related materials, medical/biological technologies including wearables/PANs. Topics of particular interest include: Measurements of wide bandwidth and high dynamic range signals and systems, including PAs; mm-wave/THzand other higher frequency measurement techniques; RF/digital mixed-signal measurements and calibration; nonlinear measurement and modeling techniques; materials measurements for emerging technologies; low power and lowvdata rate measurements in noisy environments; de-embedding and correction methods; other topical areas of RF, microwave and mm-wave measurement.

  • 2015 85th ARFTG Microwave Measurement Conference (ARFTG)

    The main theme of this conference is microwave measurements for emerging technologies. Technical papers are solicited describing original work in the areas of measurement requirements for new, emerging, and developing technologies including, but not limited to, medical/biological areas, nanomaterials, graphene and related materials, and THz and related high frequency areas. Topics of particular interest include: Materials measurements for emerging technologies, Measurements in extreme impedance environments, Mm-wave/THz and other higher frequency measurement Measurements in highly nonlinear environments (including energy harvesting), De-embedding and correction methods for complex interfaces/fixtures, Other areas of rf, microwave and/or millimeter wave measurement.

  • 2014 83rd ARFTG Microwave Measurement Conference (ARFTG)

    The main theme of this conference is microwave measurements for emerging technologies. Technical papers are solicited describing original work in the areas of measurement requirements for new, emerging, and developing technologies including, but not limited to, medical/biological areas, nanomaterials, graphene and related materials, and THz and related high frequency areas. Topics of particular interest include: Materials measurements for emerging technologies, Measurements in extreme impedance environments, Mm-wave/THz and other higher frequency measurement Measurements in highly nonlinear environments (including energy harvesting), De-embedding and correction methods for complex interfaces/fixtures, Other areas of rf, microwave and/or millimeter wave measurement.

  • 2013 81st ARFTG Microwave Measurement Conference (ARFTG)

    RF and Microwave Measurement Techniques

  • 2012 79th ARFTG Microwave Measurement Conference (ARFTG)

    RF and microwave measurement techniques

  • 2011 77th ARFTG Microwave Measurement Conference (ARFTG)

    RF and Microwave measurement techniques.

  • 2010 75th ARFTG Microwave Measurement Conference

    ARFTG Microwave Measurement Conference cover the broad interests of the RF and microwave test and measurement community and include such diverse topics as on-wafer measuremens, non-linear measurements, production testing, temporal measurements, high frequency fixturing, multi-port analysis, modulated sigmal measurements, etc.

  • 2009 73rd ARFTG Microwave Measurement Conference

    ARFTG Microwave Measurement Conference cover the broad interests of the RF and microwave test and measurement community and include such diverse topics as on-wafer measuremens, non-linear measurements, production testing, temporal measurements, high frequency fixturing, four and six port analysis, load pull measurements, etc.

  • 2008 71st ARFTG Microwave Measurement Conference

    ARFTG sponsors two conferences each year. The Spring Conference is a single-day conference cosponsored with MTT-S held in June on the Friday following the IEEE International Microwave Symposium (IMS). The Fall Conference is a two-day conference on Thursday and Friday in late November or early December, one week after the Thanksgiving holiday. Conferences are conducted in a single-track workshop style with papers on topical subjects used to stimulate further discussion and interaction. Both user and manufact

  • 2007 69th ARFTG Conference

  • 2006 67th ARFTG Conference

  • 2005 65th ARFTG Conference

  • 2004 63rd ARFTG Conference

  • 2003 61st ARFTG Conference

  • 2002 60th ARFTG Conference: Microwave Measurements

  • 2001 57th ARFTG Conference: Best Practice and Stategies for RF Test

  • 2001 58th ARFTG Conference: RF Measurements for a Wireless World

  • 2000 56th ARFTG Conference: Metrology and Test for RF Telecommunications

  • 1999 53rd ARFTG Conference: Nonlinearity Characterization

  • 1998 52nd ARFTG Conference: Computer Aided Design and Test for High Speed Electronics

  • 1997 49th ARFTG Conference: Characterization of Broadband Telecommunications Components & Systems


2019 Conference on Microwave Techniques (COMITE)

The scope of the conference is the presentation of the latest development in the area ofmicrowave circuits and systems, antenna design and modelling, communication systems,microwave circuits and systems, signal propagation, EMC and related disciplines.


More Conferences

Periodicals related to Attenuation

Back to Top

Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Automatic Control, IEEE Transactions on

The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Broadcasting, IEEE Transactions on

Broadcast technology, including devices, equipment, techniques, and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.


Circuits and Systems II: Express Briefs, IEEE Transactions on

Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.


More Periodicals

Most published Xplore authors for Attenuation

Back to Top

Xplore Articles related to Attenuation

Back to Top

Rain fade slope predicted from rain rate data

Radio Science, 2007

A key parameter of the statistics of the rate of change of rain attenuation (“fade slope”) on satellite links is the variance of relative fade slope. This paper shows how this parameter can be derived from rain rate measurements without the use of satellite beacon measurements. Relating rain rate directly to attenuation would give unrealistic results. A theoretical model to ...


Liquid water content estimates using simultaneous S and K<inf>a</inf>band radar measurements

Radio Science, 2011

A technique for the estimation of total liquid water content (LWC; the sum of cloud water and rainwater contents) using simultaneous S and Kaband scanning radar observations is proposed and tested using the National Center for Atmospheric Research simultaneous S band and Kaband dual-polarimetric (S-PolKa) radar system. The sources of error for this wavelength pair are evaluated, and the methods ...


Correction to “A simple model for the estimation of rain-induced attenuation along earth-space paths at millimeter wavelengths” by W. L. Stutzman and W. K. Dishman

Radio Science, 1984

No abstract is available.


The Pulse Behaviour of Passive EMI-Line Filters

1984 International Symposium on Electromagnetic Compatibility, 1984

None


Advanced time series synthesizer for simulation of joint rain attenuation conditions

Radio Science, 2014

This contribution presents a model to generate time series of rain attenuation by adapting a large set of rain attenuation measurements to different locations. The proposed model allows generating rainy and not rainy conditions for multiple stations in a large geographical area, reproducing the actual spatial and temporal variability of the rain process, with limited computational effort. Single site and ...


More Xplore Articles

Educational Resources on Attenuation

Back to Top

IEEE-USA E-Books

  • Rain fade slope predicted from rain rate data

    A key parameter of the statistics of the rate of change of rain attenuation (“fade slope”) on satellite links is the variance of relative fade slope. This paper shows how this parameter can be derived from rain rate measurements without the use of satellite beacon measurements. Relating rain rate directly to attenuation would give unrealistic results. A theoretical model to estimate the variance of relative fade slope is derived, using the integrating effect of rain rate variations along the propagation path and using as inputs several meteorological parameters only. The theoretical values are compared to measured results from a link in the United Kingdom at 50 GHz. The agreement is good on average and also in their correlation with the type of rain and with the rain height. With the wind speed, the theoretical values increase more strongly than the measured results, which may be due to the limited spatial resolution of the meteorological data.

  • Liquid water content estimates using simultaneous S and K<inf>a</inf>band radar measurements

    A technique for the estimation of total liquid water content (LWC; the sum of cloud water and rainwater contents) using simultaneous S and Kaband scanning radar observations is proposed and tested using the National Center for Atmospheric Research simultaneous S band and Kaband dual-polarimetric (S-PolKa) radar system. The sources of error for this wavelength pair are evaluated, and the methods to mitigate them are discussed. The results are LWC estimates at each radar volume that are equivalent to specifying a reflectivity (Z) – LWC relation constrained by the measured attenuation over 2 km radar ray segments. Because the radars are scanning, the LWC can be mapped out over the spatial volume and temporal evolution of the clouds. The method produces reasonable results that qualitatively compare well to in situ aircraft observations.

  • Correction to “A simple model for the estimation of rain-induced attenuation along earth-space paths at millimeter wavelengths” by W. L. Stutzman and W. K. Dishman

    No abstract is available.

  • The Pulse Behaviour of Passive EMI-Line Filters

    None

  • Advanced time series synthesizer for simulation of joint rain attenuation conditions

    This contribution presents a model to generate time series of rain attenuation by adapting a large set of rain attenuation measurements to different locations. The proposed model allows generating rainy and not rainy conditions for multiple stations in a large geographical area, reproducing the actual spatial and temporal variability of the rain process, with limited computational effort. Single site and joint statistics of rain attenuation obtained by the time series of measurements are discussed. The model is used to show the effectiveness, in terms of link margin, of gateway networks in smart diversity arrangement, for different separation distances among sites.

  • Disturbance attenuation and rejection for systems with missing measurements via DOBC approach

    For a class of nonlinear systems with missing measurements and multiple disturbances, Disturbance attenuation and rejection problems are investigated in this paper. The state observer and disturbance observer are constructed based on measurement output error and/or control input. The measurement output may occur to loss in the real systems, which are characterized by stochastic binary sequence. Two types of disturbances are also considered, one is emerged from H2form, which are attenuated by H∞control. The other is rejected by disturbance-observer-control. The pth(1, 2) moment exponential stability are analyzed in terms of linear matrix inequalities (LMIs) for the systems with known nonlinear dynamics. Simulation examples are provided to demonstrate the effectiveness of the results.

  • Attenuation computer tomography by phase insensitive detection

    A large, one dimensional receiving array has been developed in the attenuation projection measurement and the phase insensitive (PIS) data processing method has been used in the evaluation. Our aim of this study is to suppress the corresponding artifacts in the attenuation projection. Four different cylindrical, biomaterial objects are tested in the measurement. The results are compared with phase sensitive (PS) results. The conclusion is given in the last part.

  • Increasing TWTs' electronic efficiency

    A possibility of a significant increase in the electronic efficiency of TWTs is considered in this paper. The output power and the power at the attenuator of a two-section TWT are measured, simulated, and calculated analytically at a fixed frequency for different distances between the attenuator and the output terminal. The significant difference between the output power and power at the attenuator's input is explained by the e-beam intensive interaction with the wave in the absorbing section. Attenuators with decreased interaction impedance are offered to increase the TWT's electronic efficiency.

  • Ground Loops During Site Validation of Anechoic Rooms Below 30 MHz

    Building up a ground loop is a very common mistake when validating anechoic rooms below 30 MHz, because this is not an issue in the frequency ranges above. It is required to measure a Site Attenuation of nearly 120 dB, but a ground loop can limit this to 63.1 dB. So a large systematic error will occur. There are several possibilities to avoid a ground loop by using battery powered devices, an isolation transformer or an RF transformer. Special care has to be taken to recognize all ground loops which can be formed by communication cables and reference frequency links. Also, a ground loop can be formed by the installed cables which are routed below the ground plane.

  • Calculations of wave propagation on a helix in the attenuation region

    It is a well-known fact that the attenuation region of the traveling-wave tube is very important to the performance of the tube, particularly with respect to gain and efficiency of the tube which is relatively short in terms of wavelengths. Characteristics of the attenuator in the passive tube have been measured frequently and variations of attenuation and wave velocity with respect to frequency and thickness of coating are known. In the interests of trying to understand the effect of the attenuator on efficiency, we have attempted to make certain calculations of performance of a theoretical attenuator such as is frequently used on certain spirals and the results of such calculations are presented here.



Standards related to Attenuation

Back to Top

IEEE Recommended Practice for Determining Safe Distances From Radio Frequency Transmitting Antennas When Using Electric Blasting Caps During Explosive Operations

This project provides recommended practices for the prediction and practical determination of safe distances from radio and radar transmitting antennas when using electric initiators to remotely detonate an explosive charge. Specifically, this document includes mathematical formulas, tables, and charts that allow the user to determine safe distances from RF transmitters with spectrum bands from 0.5 MHz to 300 GHz, including ...


IEEE Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques

To specify protocols for the measurement of the peak spatial-average specific absorption rate (SAR) in a simplified model of the head of users of hand-held radio transceivers used for personal wireless communications services and intended to be operated while held next to the ear. It applies to contemporary and future devices with the same or similar operational characteristics as contemporary ...


IEEE Recommended Practice for Measurement of 8-VSB Digital Television Transmission Mask Compliance for the USA

This recommended practice provides a standardized body of theory, techniques, and procedures for measuring the spectral characteristics of 8-VSB transmitters used for terrestrial transmission of digital television (DTV) in the frequency range near their assigned channels. Essential characteristics are specified and measurement procedures are given that ensure that all parties will obtain comparable results. The theory and techniques presented are ...


IEEE Recommended Practice for Measurements and Computations of Radio Frequency Electromagnetic Fields With Respect to Human Exposure to Such Fields, 100 kHz-300 GHz

Revise and develop specifications for preferred methods for measuring and computing external radiofrequency electromagnetic fields to which persons may be exposed. In addition, the document will specify preferred methods for the measurement and computation of the resulting fields and currents that are induced in bodies of humans exposed to these fields over the frequency range of 100 kHz to 300 ...