scholarly journals A Single-shot Field Measurement Procedure for Radiated Emissions using Equivalent Surface Dipoles

2021 ◽  
Author(s):  
pankaj binda ◽  
Rajendra Mitharwal ◽  
Ghanshyam Singh
Keyword(s):  
Field Measurements ◽  
Reconstruction Algorithm ◽  
Measurement Procedure ◽  
Equivalence Theorem ◽  
Single Shot ◽  
Single Dipole ◽  
Radiated Emissions ◽  
Electric And Magnetic Fields ◽  
Communication Devices ◽  
New Generation

The new generation of communication devices operating in higher frequency bands is constantly pushing the complexity of field measurements for electromagnetic compliance and the design of field probes. These compliance are to be met for both electric and magnetic fields which demands repeating the same measurement procedure using different probes. The main objective of this paper is to provide a procedure which provides both fields in a single shot measurement using a single probe based on source reconstruction algorithm. The algorithm is based on a novel way of placing single dipole per point tangentially to a fictitious surface based on surface equivalence theorem instead of three orthogonal dipoles per point in earlier works. The control of overall accuracy by varying dipole and measurement point density is also demonstrated. We also prove the existence, uniqueness and the error bounds involved in the inverse problem rigorously. The numerical results corroborates the effectiveness of the proposed procedure in obtaining accurate fields and also locating the regions of the Device Under Test responsible for overshooting the interference limits.

scholarly journals A Single-shot Field Measurement Procedure for Radiated Emissions using Equivalent Surface Dipoles

2021 ◽  
Author(s):  
pankaj binda ◽  
Rajendra Mitharwal ◽  
Ghanshyam Singh
Keyword(s):  
Field Measurements ◽  
Reconstruction Algorithm ◽  
Measurement Procedure ◽  
Equivalence Theorem ◽  
Single Shot ◽  
Single Dipole ◽  
Radiated Emissions ◽  
Electric And Magnetic Fields ◽  
Communication Devices ◽  
New Generation

The new generation of communication devices operating in higher frequency bands is constantly pushing the complexity of field measurements for electromagnetic compliance and the design of field probes. These compliance are to be met for both electric and magnetic fields which demands repeating the same measurement procedure using different probes. The main objective of this paper is to provide a procedure which provides both fields in a single shot measurement using a single probe based on source reconstruction algorithm. The algorithm is based on a novel way of placing single dipole per point tangentially to a fictitious surface based on surface equivalence theorem instead of three orthogonal dipoles per point in earlier works. The control of overall accuracy by varying dipole and measurement point density is also demonstrated. We also prove the existence, uniqueness and the error bounds involved in the inverse problem rigorously. The numerical results corroborates the effectiveness of the proposed procedure in obtaining accurate fields and also locating the regions of the Device Under Test responsible for overshooting the interference limits.

Improvement of Semiconductors Quality Using Isotopic Nanoengineering

2020 ◽  
Vol 854 ◽  
pp. 74-79
Author(s):  
N.M. Legkiy
Keyword(s):  
Band Gap ◽  
Natural Graphite ◽  
Communication Devices ◽  
Transmutation Doping ◽  
Fiber Optic Communication ◽  
Neutron Transmutation ◽  
Optic Communication ◽  
New Generation ◽  
Communication Lines ◽  
Improved Characteristics

The article covers a solution of a modern electronics problem: improvement of data transmission device speed using the example of fiber-optic communication lines (FOCL). The data processing rate and throughput of transmission channels are determined by capabilities of the optoelectronics and, first of all, by the performance of its hardware components. The article presents all possible ways to improve the performance of FOCL. Design and production of communication devices moves to the nanotechnological level that opens up new possibilities for creation of semiconductors with advanced characteristics. The methods and means chosen for production of the nanostructures are crucial for creation of the new generation hardware components. Graphene is considered as the most promising material for creation of the new generation hardware components for semiconductors. Potential capabilities of the material are not yet fully explored. Isotopic nanoengineering is used as the method for production of the nanostructures with improved characteristics. In particular, we use the neutron transmutation doping technology based on irradiation of a graphite sample with a neutron flux. This method increases content of the 13C isotope (natural graphite contains only about 1.1% of this isotope). As a result, the band gap opens bringing the properties of the material closer to the properties of a semiconductor. The closer the width of the graphene band gap to the width of the silicon band gap, the closer the properties of graphene to the properties of semiconducting silicon. Furthermore, all properties of the natural graphite (high throughput and sensitivity to almost the entire optical spectrum) are preserved.

Prediction of Radiated Emissions Using Near-Field Measurements

2011 ◽  
Vol 53 (4) ◽  
pp. 891-899 ◽  
Author(s):  
Haixiao Weng ◽  
Daryl G. Beetner ◽  
Richard E. DuBroff
Keyword(s):  
Near Field ◽  
Field Measurements ◽  
Radiated Emissions

scholarly journals Using Persistence Spectrum for Realistic Exposure Assessment to Time Varying Radiofrequency Signals

2019 ◽  
Vol 25 (3) ◽  
pp. 57-62
Author(s):  
Annamaria Sârbu ◽  
Simona Miclăuş ◽  
Paul Bechet ◽  
Iulian Bouleanu
Keyword(s):  
Exposure Assessment ◽  
Real Time ◽  
Time Spectrum ◽  
Measurement Procedure ◽  
Statistical Parameters ◽  
Lte Advanced ◽  
Time Usage ◽  
Close Proximity ◽  
New Generation

Abstract In this article we propose the use of the persistence spectrum to accurately assess the user’s exposure to electromagnetic field emitted by new generation of communication terminals. Persistent display view available within a Real Time Spectrum Analyzer (RTSA) enables a graphical observation of the main statistical parameters of a signal. A simple case study of exposure assessment was conducted by measuring the electric field strength in the close proximity of a mobile phone operated in a LTE-Advanced mobile communication network. The proposed measurement procedure is presented and then applied to a limited number of operating situations (VoIP, Video streaming, File upload, File download). We made use of the persistence spectrum capabilities to directly access the signal strength statistics in time. By this procedure we demonstrate a supplementary facility that enables direct visual tracing of exposure dynamics during real time usage of a specific mobile application.

scholarly journals Compromising Radiated Emission from a Power Line Communication Cable

2011 ◽  
Vol 7 (1) ◽  
pp. 16 ◽  
Author(s):  
Virginie Degardin ◽  
Pierre Laly ◽  
Martine Lienard ◽  
Pierre Degauque
Keyword(s):  
Electromagnetic Field ◽  
Electromagnetic Compatibility ◽  
Preliminary Investigation ◽  
Software Tool ◽  
Field Measurements ◽  
Power Line ◽  
Statistical Characteristics ◽  
Power Line Communication ◽  
Laboratory Environment ◽  
Radiated Emissions

This contribution presents a preliminary investigation on the possibility of eavesdropping, i.e., of extracting information by exploiting the electromagnetic field radiated in the vicinity of a power line communication (PLC) network. This kind of problem is usually known in the electromagnetic compatibility area under the codename TEMPEST. Electromagnetic field measurements were carried out in a laboratory environment, both inside and outside a building, and the main statistical characteristics of the compromising channel are presented. A software tool simulating a PLC communication has been developed and used to draw apreliminary conclusion on whether the radiated emissions can be exploited or not.

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