Bibliografías temáticas / Electromagnetic interference. Mixed signal circuits

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Literatura académica sobre el tema "Electromagnetic interference. Mixed signal circuits"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 7 de febrero de 2022

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Artículos de revistas sobre el tema "Electromagnetic interference. Mixed signal circuits"

Luo, Ming y Ka-Ma Huang. "AN EXTENDED DELAY-RATIONAL MACROMODEL FOR ELECTROMAGNETIC INTERFERENCE ANALYSIS OF MIXED SIGNAL CIRCUITS". Progress In Electromagnetics Research 127 (2012): 189–210. http://dx.doi.org/10.2528/pier12022406.

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Barylo, Gryhoriy, Oksana Boyko, Ihor Helzhynskyy, Tetyana Marusenkova, Yurii Kryvenchuk y Roman Holyaka. "HARDWARE-SOFTWARE EMBEDDED SYSTEM OF SIGNAL FREQUENCY SELECTION ON GYRATOR". Measuring Equipment and Metrology 82, n.º 1 (2021): 37–42. http://dx.doi.org/10.23939/istcmtm2021.01.037.

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The work is devoted to the problem of frequency-selective signal conversion in microelectronic sensor devices. It has been shown that the signal path of such devices, in particular, sensor nodes in the concept of the Internet of Things, must meet the requirements of embedded systems using a mixed analog-digital front end. The analysis of the signal transformation of photovoltaic sensors, in particular the problem of a significant parasitic influence of extraneous non-informative optical radiation and electromagnetic interference, has been carried out. SPICE models of photovoltaic sensor signal circuits providing frequency selection on bandwidth filters have been synthesized. The main approaches of hardware-software implementation of the built-in system of frequency selection with the mixed-signal transformation are considered. The signal path of the embedded system includes a gyrator, a software-controlled amplifier, a synchronous demodulator, an analog-to-digital converter, and a digital filter. The implementation is carried out on the platform of the programmable system on a PSoC chip. The integrated circuits of the PSoC 5 LP Family Cypress Semiconductor Corporation are used with a wide range of programmable analog front-end nodes, in particular operating amplifiers, comparators, units on switching capacitors, reference voltage sources on the principle of the forbidden zone, analog multiplexers, signal synthesizers, etc. The efficiency of the mixed analog and digital signal conversion is shown.

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Sun, Guo Qiang, Gang Guo, Yong Bo Yang, Dong Ping Yang y Jian Feng Zhang. "Analysis of Electromagnetic Compatibility about Air-Power-Off of Aircraft Power System". Advanced Materials Research 503-504 (abril de 2012): 983–86. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.983.

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At present, main AC power systems of advanced fighters all apply digital controllers with microprocessors. The signal input and output circuits are vulnerable to the effects of electromagnetic interference, which may cause air-power-off fault. The paper analyzes the electromagnetic environment on the aircraft, discusses the airborne electromagnetic compatibility by comparing domestic and international contents and limitations of the electromagnetic standard. Furthermore, it proposes measures to resolve the electromagnetic compatibility

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Perez, Daniel, Ignacio Gil, Javier Gago, Raúl Fernandez-Garcia, Josep Balcells, David Gonzalez, Néstor Berbel y Juan Mon. "Reduction of Electromagnetic Interference Susceptibility in Small-Signal Analog Circuits Using Complementary Split-Ring Resonators". IEEE Transactions on Components, Packaging and Manufacturing Technology 2, n.º 2 (febrero de 2012): 240–47. http://dx.doi.org/10.1109/tcpmt.2011.2172442.

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Li, Yanchu, Qingqing Ding, Keyue Li, Stanimir Valtchev, Shufang Li y Liang Yin. "A Survey of Electromagnetic Influence on UAVs from an EHV Power Converter Stations and Possible Countermeasures". Electronics 10, n.º 6 (17 de marzo de 2021): 701. http://dx.doi.org/10.3390/electronics10060701.

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It is inevitable that high-intensity, wide-spectrum electromagnetic emissions are generated by the power electronic equipment of the Extra High Voltage (EHV) power converter station. The surveillance flight of Unmanned Aerial Vehicles (UAVs) is thus, situated in a complex electromagnetic environment. The ubiquitous electromagnetic interference demands higher electromagnetic protection requirements from the UAV construction and operation. This article is related to the UAVs patrol inspections of the power line in the vicinity of the EHV converter station. The article analyzes the electromagnetic interference characteristics of the converter station equipment in the surrounding space and the impact of the electromagnetic emission on the communication circuits of the UAV. The anti-electromagnetic interference countermeasures strive to eliminate or reduce the threats of electromagnetic emissions on the UAV’s hardware and its communication network.

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Wang, Ching Sung, Chien Wei Liu y Teng Hui Wang. "Implement a Low Noise Portable ECG Circuit". Advanced Materials Research 301-303 (julio de 2011): 1327–32. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.1327.

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The most important operation of electrocardiogram (ECG) signal measurement device is to amplify signal and maintain correct original signal. The operation of all circuits cause electromagnetic interference (EMI), but EMI can be reduced by using special component or some PCB layout approaches. This paper provides an example of portable ECG device to demonstrate a method that can effectively reduce EMI and be applied in finished product. This research has built a lead-1 ECG to reach a low noise operation. This result can be easily applied to portable ECG measurement.

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Saiapina, Inna, Mykhailo Babaiev y Olha Аnanіevа. "Reducing noise influence on an audio frequency track circuit". MATEC Web of Conferences 294 (2019): 03015. http://dx.doi.org/10.1051/matecconf/201929403015.

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In connection with electromagnetic interference influence on the track circuits, the purpose of the research is finding the means to increase the noise immunity of an audio frequency track circuit. The authors propose a new engineering solution, which enables reducing the effect of noises on the input of the track receiver in the intervals between signal current pulses. The proposed noise-immune audio frequency track circuit is based on inserting a delay line, an adjustable single-pulse generator and a controlled electronic switch into the existing audio frequency track circuit equipment. To analyze its efficiency, the operation of the audio frequency track circuit was simulated under conditions of traction current disturbances, impulse and fluctuation interferences with the known parameters. The results show that proposed device for railway transport allows to increase a signal-to-noise ratio on the track receiver input from 8% to 30%, depending on the interference parameters and the level of the useful signal.

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Huang, Hsieh Chang, Ching Tang Hsieh y Guang Lin Hsieh. "An Ultra-Low Power Holter and Low Complexity Design Using Mixed Signal Processor". Applied Mechanics and Materials 284-287 (enero de 2013): 1627–32. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.1627.

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An ultra-low power, portable, and easily implemented Holter recorder is necessary for patients or researchers of electrocardiogram (ECG). Such a Holter recorder with off-the-shelf components is realized with mixed signal processor (MSP) in this paper. To decrease the complexity of analog circuits and the interference of 60 Hz noise from power line, we use the MSP to implement a finite impulse response (FIR) filter which is equiripple design. We also integrate the ring buffer for the input samples and the symmetrical characteristic of the FIR filter for efficiently computing convolution. The experimental results show that the ECG output signal with the PQRST feature is easy to be distinguished. This ECG signal is recorded for 24 hours using a SD card. Furthermore, the ECG signal is transmitted with a smartphone via Bluetooth to decrease the burden of the Holter recorder. As a result, this paper uses the Lomb method for the spectral analysis of Heart Rate Variability (HRV) better than Fast Fourier Transform (FFT).

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Weng, T., S. Stegemann, W. John y W. Mathis. "An identification procedure of multi-input Wiener models for the distortion analysis of nonlinear circuits". Advances in Radio Science 11 (4 de julio de 2013): 165–70. http://dx.doi.org/10.5194/ars-11-165-2013.

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Abstract. In this contribution, a system identification procedure of a two-input Wiener model suitable for the analysis of the disturbance behavior of integrated nonlinear circuits is presented. The identified block model is comprised of two linear dynamic and one static nonlinear block, which are determined using an parameterized approach. In order to characterize the linear blocks, an correlation analysis using a white noise input in combination with a model reduction scheme is adopted. After having characterized the linear blocks, from the output spectrum under single tone excitation at each input a linear set of equations will be set up, whose solution gives the coefficients of the nonlinear block. By this data based black box approach, the distortion behavior of a nonlinear circuit under the influence of an interfering signal at an arbitrary input port can be determined. Such an interfering signal can be, for example, an electromagnetic interference signal which conductively couples into the port of consideration.

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Poymalin, V. E., A. V. Buyankin, A. A. Nelin, L. E. Ragulina y M. V. Ryzhakov. "Shielding Device for Microwave Electronic Components of a Multilayer Board for the AFAR Transceiver Module for Space Purposes". Rocket-space device engineering and information systems 8, n.º 2 (2021): 82–87. http://dx.doi.org/10.30894/issn2409-0239.2021.8.2.82.87.

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A method of shielding the elements of a microwave module based on the principles of forming a Faraday cage, with different power and different frequency paths of the AFAR receiving-transmitting module, excluding their mutual electromagnetic influence, is presented. A description of the structure of a multilayer board and various structural elements is given, allowing to limit (screen) the signal in a small volume, commensurate with the size of a monolithic integrated circuit or a set of monolithic integrated circuits, isolating parasitic electromagnetic interference. Polyimide is considered as a dielectric material of a multilayer microwave board for use in space technology devices, as well as promising design solutions for reducing the mass and dimensions of the module.

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Más fuentes

Tesis sobre el tema "Electromagnetic interference. Mixed signal circuits"

Bayram, Yakup. "Hybrid methods for mixed signal circuits subject to on & off - board electromagnetic interference". Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1158616495.

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Huh, Suzanne Lynn. "Design of power delivery networks for noise suppression and isolation using power transmission lines". Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42842.

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In conventional design of power delivery networks (PDNs), the PDN impedance is required to be less than the target impedance over the frequency range of interest to minimize the IR drop and to suppress the inductive noise during data transitions. As a result, most PDNs in high-speed systems consist of power and ground planes to provide a low-impedance path between the voltage regulator module (VRM) and the integrated circuit (IC) on the printed circuit board (PCB). For off-chip signaling, charging and discharging signal transmission lines induce return currents on the power and ground planes. The return current always follows the path of least impedance on the reference plane closest to the signal transmission line. The return current path plays a critical role in maintaining the signal integrity of the bits propagating on the signal transmission lines. The problem is that the disruption between the power and ground planes induces return path discontinuities (RPDs), which create displacement current sources between the power and ground planes. The current sources excite the plane cavity and cause voltage fluctuations. These fluctuations are proportional to the plane impedance since the current is drawn through the PDN by the driver. Therefore, low PDN impedance is required for power supply noise reduction. Alternatively, methods of preventing RPDs can be used to suppress power supply noise. Using a power transmission line (PTL) eliminates the discontinuity between the power and ground planes, thereby preventing the RPD effects. In this approach, transmission lines replace the power plane for conveying power from the VRM to each IC on the PCB. The PTL-based PDN enables both power and signal transmission lines to be referenced to the same ground plane so that a continuous current path can be formed, unlike the power-plane-based PDN. As a result, a closed current loop is achieved, and the voltage fluctuation caused by RPDs is removed in idealistic situations. Without the RPD-related voltage fluctuation, reducing the PDN impedance is not as critical as in the power-plane-based approach. Instead, the impedance of the PTL is determined by the impedance of the signaling circuits. To use the PTL-based PDN in a practical signaling environment, several issues need to be solved. First, the dc drop coming from the source termination of the PTL needs to be addressed. The driver being turned on and off dictates the current flow through the PTL, causing the dc drop to be dynamic, which depends on the data pattern. Second, impedance mismatch between the PTL and termination can occur due to manufacturing variations. Third, an increase in the number of PCB traces should be addressed by devising a method to feed more than one driver with one PTL. Lastly, the power required to transmit 1 bit of data should be optimized for the PTL by using a new signaling scheme and adjusting the impedance of the signaling circuit. Constant flow of current through the PDN is one solution proposed to address the first two issues. Constant current removes the dynamic characteristics of the dc drop by inducing a fixed amount of dc drop over the PTL. Moreover, constant current keeps the PTL fully charged at all times, and thereby eliminates the process of repeatedly charging and discharging the power transmission line. The constant current PTL (CCPTL) scheme maintains constant current flow regardless of the input data pattern. Early results on the CCPTL scheme have been discussed along with the measurements. The CCPTL scheme severs the link between the current flowing through the PTL and the output data of the I/O driver connected to it. Also, it eliminates the charging and discharging process of the PTL, thereby completely eliminating power supply noise in idealistic situations. To reduce any associated power penalty, a pseudo-balanced PTL (PBPTL) scheme is also proposed using the PTL concept. A pseudo-balanced (PB) signaling scheme, which uses an encoding technique to map N-bit data onto M-bit encoded data with fixed number of 1s and 0s, is applied. When the PB signaling scheme is combined with the PTL, the jitter performance improves significantly as compared to currently practiced design approach.

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Kim, Tae Hong. "Electromagnetic Band Gap (EBG) synthesis and its application in analog-to-digital converter load boards". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22712.

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With increase in frequency and convergence toward mixed signal systems, supplying stable voltages to integrated circuits and blocking noise coupling in the systems are major problems. Electromagnetic band gap (EBG) structures have been in the limelight for power/ground noise isolation in mixed signal applications due to their capability to suppress unwanted electromagnetic mode transmission in certain frequency bands. The EBG structures have proven effective in isolating the power/ground noise in systems that use a common power supply. However, while the EBG structures have the potential to present many advantages in noise suppression applications, there is no method in the prior art that enables reliable and efficient synthesis of these EBG structures. Therefore, in this research, a novel EBG synthesis method for mixed signal applications is presented. For one-dimensional periodic structures, three new approaches such as current path approximation method, border to border radius, power loss method have been introduced and combined for synthesis. For two-dimensional EBG structures, a novel EBG synthesis method using genetic algorithm (GA) has been presented. In this method, genetic algorithm (GA) is utilized as a solution-searching technique. Synthesis procedure has been automated by combining GA with multilayer finite-difference method and dispersion diagram analysis method. As a real application for EBG structures, EBG structures have been applied to a GHz ADC load board design for power/ground noise suppression.

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Deobarro, Mikaël. "Etude de l'immunité des circuits intégrés face aux agressions électromagnétiques : proposition d'une méthode de prédiction des couplages des perturbations en mode conduit". Thesis, Toulouse, INSA, 2011. http://www.theses.fr/2011ISAT0002/document.

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Avec les progrès technologiques réalisés au cours de ces dernières décennies, la complexité et les vitesses de fonctionnement des circuits intégrés ont beaucoup été augmentées. Bien que ces évolutions aient permis de diminuer les dimensions et les tensions d’alimentations des circuits, la compatibilité électromagnétique (CEM) des composants a fortement été dégradée. Identifiée comme étant un verrou technologique, la CEM est aujourd’hui l’une des principales causes de « re-design » des circuits car les problématiques liées aux mécanismes de génération et de couplage du bruit ne sont pas suffisamment étudiées lors de leur conception.Ce manuscrit présente donc une méthodologie visant à étudier la propagation du bruit à travers les circuits intégrés par mesures et par simulations. Afin d’améliorer nos connaissances sur la propagation d’interférences électromagnétiques (IEM) et les mécanismes de couplage à travers les circuits, nous avons conçu un véhicule de test développé dans la technologie SMOS8MV® 0,25 µm de Freescale Semiconductor. Dans ce circuit, plusieurs fonctions élémentaires telles qu’un bus d’E/S et des blocs numériques ont été implémentées. Des capteurs de tensions asynchrones ont également été intégrés sur différentes alimentations de la puce pour analyser la propagation des perturbations injectées sur les broches du composant (injection DPI) et sur les conducteurs permettant d’alimenter ce dernier (injection BCI). En outre, nous proposons différents outils pour faciliter la modélisation et les simulations d’immunité des circuits intégrés (extraction des modèles de PCB, approches de modélisation des systèmes d’injection, méthode innovante permettant de prédire et de corréler les niveaux de tension/ de puissance injectés lors de mesures d’immunité conduite, flot de modélisation). Chaque outil et méthode de modélisation proposés sont évalués sur différents cas test. Enfin, pour évaluer notre démarche de modélisation, nous l’appliquons sur un bloc numérique de notre véhicule de test et comparons les résultats de simulations aux différentes mesures internes et externes réalisées sur le circuit
With technological advances in recent decades, the complexity and operating speeds of integrated circuits have greatly increased. While these developments have reduced dimensions and supply voltages of circuits, electromagnetic compatibility (EMC) of components has been highly degraded. Identified as a technological lock, EMC is now one of the main causes of circuits re-designs because issues related to generating and coupling noise mechanisms are not sufficiently studied during their design. This manuscript introduces a methodology to study propagation of electromagnetic disturbances through integrated circuits by measurements and simulations. To improve our knowledge about propagation of electromagnetic interferences (EMI) and coupling mechanisms through integrated circuits, we designed a test vehicle developed in the SMOS8MV® 0.25µm technology from Freescale Semiconductor. In this circuit, several basic functions such as I/O bus and digital blocks have been implemented. Asynchronous on-chip voltage sensors have also been integrated on different supplies of the chip to analyze propagation of disturbances injected on supply pins and wires of the component (DPI and BCI injection). In addition, we propose various tools to facilitate modeling and simulations of Integrated Circuit’s immunity (PCB model extraction, injection systems modeling approaches, innovative method to predict and correlate levels of voltage / power injected during conducted immunity measurements, modeling flow). Each tool and modeling method proposed is evaluated on different test cases. To assess our modeling approach, we finally apply it on a digital block of our test vehicle and compare simulation results to various internal and external measurements performed on the circuit

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Huang, Pao-Shu y 黃寶樹. "Effectively Reduced Radiated Electromagnetic Interference for Emission Source of High-Frequency Signal Circuits Using the Filter". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/44369029146505243380.

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碩士
輔仁大學
電子工程學系
96
Now, the high-speed signal of printed circuit board of electronic product usually exceeds 100MHz, moreover, the nonideal behavior of the circuit makes the high-speed signal produce radiated electromagnetic interference (radiated EMI) easily, however, the radiated EMI are mostly coming from higher frequency harmonic of high-speed signal, So this thesis proposes four kinds of different structure EMI filters and then using Pspice to simulate EMI filter’s circuit and using derived transfer function to calculate EMI filter’s parameters, finally, put electronic product into EMI chamber and actually measure radiated EMI, it can prove that radiated EMI produced by high-speed signal can be suppress and enable the electronic product to pass the regulation of EMI (CISPR 22).

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(11178318), Debayan Das. "Advanced EM/Power Side-Channel Attacks and Low-overhead Circuit-level Countermeasures". Thesis, 2021.

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The huge gamut of today’s internet-connected embedded devices has led to increasing concerns regarding the security and confidentiality of data. To address these requirements, most embedded devices employ cryptographic algorithms, which are computationally secure. Despite such mathematical guarantees, as these algorithms are implemented on a physical platform, they leak critical information in the form of power consumption, electromagnetic (EM) radiation, timing, cache hits and misses, and so on, leading to side-channel analysis (SCA) attacks. Non-profiled SCA attacks like differential/correlational power/EM analysis (DPA/CPA/DEMA/CEMA) are direct attacks on a single device to extract the secret key of an encryption algorithm. On the other hand, profiled attacks comprise of building an offline template (model) using an identical device and the attack is performed on a similar device with much fewer traces.

This thesis focusses on developing efficient side-channel attacks and circuit-level low-overhead generic countermeasures. A cross-device deep learning-based profiling power side-channel attack (X-DeepSCA) is proposed which can break the secret key of an AES-128 encryption engine running on an Atmel microcontroller using just a single power trace, thereby increasing the threat surface of embedded devices significantly. Despite all these advancements, most works till date, both attacks as well as countermeasures, treat the crypto engine as a black box, and hence most protection techniques incur high power/area overheads.

This work presents the first white-box modeling of the EM leakage from a crypto hardware, leading to the understanding that the critical correlated current signature should not be passed through the higher metal layers. To achieve this goal, a signature attenuation hardware (SAH) is utilized, embedding the crypto core locally within the lower metal layers so that the critical correlated current signature is not passed through the higher metals, which behave as efficient antennas and its radiation can be picked up by a nearby attacker. Combination of the 2 techniques – current-domain signature suppression and local lower metal routing shows >350x signature attenuation in measurements on our fabricated 65nm test chip, leading to SCA resiliency beyond 1B encryptions, which is a 100x improvement in both EM and power SCA protection over the prior works with comparable overheads. Moreover, this is a generic countermeasure and can be utilized for any crypto core without any performance degradation.

Next, backed by our physics-level understanding of EM radiation, a digital library cell layout technique is proposed which shows >5x reduction in EM SCA leakage compared to the traditional digital logic gate layout design. Further, exploiting the magneto-quasistatic (MQS) regime of operation for the present-day CMOS circuits, a HFSS-based framework is proposed to develop a pre-silicon EM SCA evaluation technique to test the vulnerability of cryptographic implementations against such attacks during the design phase itself.

Finally, considering the continuous growth of wearable and implantable devices around a human body, this thesis also analyzes the security of the internet-of-body (IoB) and proposes electro-quasistatic human body communication (EQS-HBC) to form a covert body area network. While the traditional wireless body area network (WBAN) signals can be intercepted even at a distance of 5m, the EQS-HBC signals can be detected only up to 0.15m, which is practically in physical contact with the person. Thus, this pioneering work proposing EQS-HBC promises >30x improvement in private space compared to the traditional WBAN, enhancing physical security. In the long run, EQS-HBC can potentially enable several applications in the domain of connected healthcare, electroceuticals, augmented and virtual reality, and so on. In addition to these physical security guarantees, side-channel secure cryptographic algorithms can be augmented to develop a fully secure EQS-HBC node.

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Libros sobre el tema "Electromagnetic interference. Mixed signal circuits"

Caniggia, Spartaco. Signal integrity and radiated emissions of high-speed digital systems. Chichester, West Sussex, England: Wiley, 2008.

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Smaini, Lydi. RF analog impairments modeling for communication systems simulation: Application to OFDM-based transceivers. Chichester, West Sussex: Wiley, 2012.

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RF analog impairments modeling for communication systems simulation: Application to OFDM-based transceivers. Chichester, West Sussex: Wiley, 2012.

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Brooks, Douglas. Signal Integrity Issues and Printed Circuit Board Design (paperback). Prentice Hall PTR, 2012.

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High-Speed Circuit Board Signal Integrity (Artech House Microwave Library). Artech House Publishers, 2004.

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Brooks, Douglas. Signal Integrity Issues and Printed Circuit Board Design. Prentice Hall PTR, 2003.

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Signal Integrity Issues and Printed Circuit Board Design. Prentice Hall PTR, 2003.

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Actas de conferencias sobre el tema "Electromagnetic interference. Mixed signal circuits"

Kapora, Sergei, Marcel Hanssen, Jan Niehof y Quino Sandifort. "Methodology for interference analysis during early design stages of high-performance mixed-signal ICs". En 2015 10th International Workshop on the Electromagnetic Compatibility of Integrated Circuits (EMC Compo). IEEE, 2015. http://dx.doi.org/10.1109/emccompo.2015.7358332.

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Ploder, Oliver, Christian Motz, Thomas Paireder, Christina Auer, Harald Pretl y Mario Huemer. "Digitally Intensive Mixed-Signal Approach for Self-Interference Cancellation in LTE-A/5G-Transceivers". En 2021 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2021. http://dx.doi.org/10.1109/iscas51556.2021.9401650.

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Prasopsin, Pakorn, Bhirawich Pholpoke, Samattachai Tepwimonpetkun y Woradorn Wattanapanitch. "A compact low-power mixed-signal architecture for powerline interference rejection in biopotential analog front ends". En 2014 IEEE Biomedical Circuits and Systems Conference (BioCAS). IEEE, 2014. http://dx.doi.org/10.1109/biocas.2014.6981696.

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Joshi, Siddharth, Chul Kim, Sohmyung Ha, Yu Mike Chi y Gert Cauwenberghs. "21.7 2pJ/MAC 14b 8×8 linear transform mixed-signal spatial filter in 65nm CMOS with 84dB interference suppression". En 2017 IEEE International Solid- State Circuits Conference - (ISSCC). IEEE, 2017. http://dx.doi.org/10.1109/isscc.2017.7870412.

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Wu, Wei. "Electromagnetic Interference (EMI) as Spark-Ignited Combustion Engines Diagnostic Parameter and Its Wireless Measurement and Wavelet Analysis". En ASME 2002 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/icef2002-500.

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This paper reveals that the ignition and combustion process of Spark-ignited Engine (SIE) inspires electromagnetic interference (EMI) that bears some inner information from SIE. The EMI conducted measurement and radiated measurement methods are experimented upon and both obtain correct signals while conducted measurement gets higher signal/noise ratio than radiated measurement. Because most signals are found in irregular structures and transient forms, the traditional frequency analysis tool Fourier Transform fails to deal with; and because during the combustion process the signals are mixed with environment noise; we use wavelet decomposition and Lipschitz signal singularity identification algorithm to confirm that among EMI signals, there are significant signals generated by SIE, thus offering an effective approach to further unveil the relationship between combustion process and EMI. Considering that the measurement is wireless completely, it is possible to develop a potable instrument for SIE diagnostic and research purpose.

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