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In this paper we present a method of simulating random electromagnetic pulse penetrating through different conducting structures. The method is based on Fourier sequence transformation. Each harmonic of the sequence penetration through the structure is described by Helmholtz equation solution. The number of the harmonics used was defined due to the suggested upper limit of the random pulse spectrum...
In the article is described the development of the controller of optical electronic unit based on the CCD line. The controller is used for biological testing. The device increases the reliability and efficiency of the optical electronic equipment for biological testing, as well as reduces distortions when processing the measuring signals.
The bandgap reference circuits are very sensitive to electromagnetic interferences (EMI) which induce voltage offset on their outputs. Two bandgap chips with different technologies are designed for EMC study. The conducted immunity of VDD and VSS pins are tested following direct power injection (DPI) method. The aim of this study is to compare the susceptibility characteristics of same bandgap circuit...
This paper presents the impact of FDSOI back gate biasing on circuit conducted emission. The back gate bias can modulate front gate electrical characteristic, and changing the circuit performance and power consumptions dynamically. Meanwhile, the electromagnetic emission of circuit is changing with the back gate variation. A ring oscillator is tested to illustrate the relation between back gate biasing...
This paper briefly recalls the design of a silicon test chip specially conceived to study the noise propagation trough the silicon substrate and the ESD protection. The noise source is a logic block designed to emulate the clock tree of a microcontroller. The experimental results obtained on two versions of the test chip are reported and discussed. The two test chips have the same schematic, but they...
The elimination of electromagnetic emissions (EME) in switch mode power supplies (SMPS) has high importance especially in automotive applications. External filters, spread spectrum techniques and the output driver circuits are the main methods to influence the switching behaviour of SMPS. This paper presents the concept of an output driver with adaptive current source control for high frequency SMPS...
Noise coupling path on a fully LTE-compatible receiver circuit chain (Band1, 2110–2170 MHz for downlink) has been analyzed to estimate the victim wires that carry digital noise from RF digital to analogue circuits on the test RF IC chip, three noise-carrying wire groups were extracted out of numerous on-chip wires through systematic measurements and electromagnetic simulation. Then the patterned amorphous...
In-place waveforms at internal nodes of control area network (CAN) transceiver circuits have been evaluated under radio frequency (RF) direct power injection (DPI) immunity test in compliance to IEC TS 62228. The RF power injected into the CAN bus on a printed circuit board (PCB) leads to differential-mode sinusoidal voltage disturbances on the CAN circuits within an integrated circuit (IC) chip....
In this paper we study the susceptibility of an integrated circuit, a Gigabit Ethernet Switch (GES), under Near Field Scan Immunity (NFSI) injection. The NFSI measure highlighted the weakness of the clock circuit of the GSE. The goal of this work is to model, simulate and predict such phenomenon. First, the model of the NFSI probe, based on 3D construction using CST™ studio Electromagnetic Software,...
Direct Electrostatic Discharge (ESD to connectors pins is used to evaluate the system level susceptibility. Nevertheless, it is difficult to determine accurately the sensitive areas. Indeed, the propagation of an ESD through a PCB is still very difficult to predict even for a simple system. The lack of models at both IC and PCB levels and the limited computational resources force to simulate the system...
The IEEE Russia North West Section and Saint Petersburg Electrotechnical University “LETI” (SPbETU “LETI”) are pleased to present the Proceedings of the 2017 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits (EMCCompo).
Modeling of a 1-terminal ESD test setup is described. During the device stress a fast current pulse is forced only through a single pin of a semiconductor device. The model can be used to calculate voltage and current waveforms during the charging and discharging phase of an ESD event which takes place within a few nanoseconds. Charging and discharging of a device depends on the design and dimensions...
This paper presents a novel LIN transceiver designed and fabricated in a 0.14 µm high-voltage SOI CMOS technology that uses a time-continuous bus-feedback technique. The architecture of the LIN transceiver takes advantage of the advanced BCD process as a waveshaping DAC uses a dense control logic circuit while the high-voltage capability enhances the robustness of the transmitter and the receiver...
The reduction of the electromagnetic emission more and more becomes a design factor to consider in the development of integrated circuits and electronic systems. Especially as switching frequencies and component density significantly increases, every opportunity to reduce the emission should be considered. In this paper it is shown how spread spectrum techniques can be used to reduce the electromagnetic...
This paper studies the impact of the accelerated thermal aging on the conducted emission produced by a synchronous buck converter. The most degraded devices mounted on the DC-DC converter are identified and modeled in order to simulate the evolution of conducted emission and anticipate risks of non-compliance to emission requirements.
The article presents the options combination of etching and atomic force microscopy for research work and the failed high electron mobility transistors, as well as in the conduct of the capacitance-voltage profiling.
A logic gate based on a Mach-Zehnder microwave interferometer is developed. The interferometer has a bridge circuitry with two arms. Each arm comprises a multiferroic phase shifter providing the control of the phase of carrier spin-electromagnetic waves. A voltage applied to the multiferroic structure serves as a logical input. Performance characteristics of the device is presented.
A theory for resonant frequency spectrum of tunable optoelectronic oscillators based on serially coupled multiple optical micro-ring resonators and microwave delay-line was developed. The theory takes into account a dispersion of electromagnetic waves in the optical micro-ring resonators and a dispersion of carrier waves in the delay-line. Expression for transfer function of the multi-loop circuitry...
This paper aims at studying the near field measurement method in immunity to investigate the robustness of components and electronic boards. An ARINC receiver is used as case study. The experimental set-up, the probe calibration method and the experimental results are presented. Investigation method and results are discussed and compared to normative measurement method like TEM cell measurement.
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