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检索条件"机构=Dept. of Electrical and Computer Engineering - Electromagnetic Compatibility Laboratory"

共 29 条记录，以下是1-10 订阅

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On the Feasibility of a Direct Injection Probe with a Capacitively Coupled Return and Integrated Voltage Monitor

On the Feasibility of a Direct Injection Probe with a Capaci...

引用

2024 IEEE International Symposium on electromagnetic compatibility, Signal and Power Integrity, EMC+SIPI 2024

作者： Harmon, Aaron Szanto, Daniel Khilkevich, Victor Beetner, Daryl Missouri University of Science and Technology Electromagnetic Compatibility Laboratory Dept. of Electrical and Computer Engineering RollaMO United States

ISBN: (纸本)9798350360394

Characterizing the susceptibility of an IC while it is integrated within a system can be challenging. Characterization is even harder if one wants to know the waveform at the target IC pin when injecting a signal on the pin. In this work, the feasibility of a direct injection probe with a capacitively coupled return and integrated voltage monitor is proposed. This probe is advantageous because it does not need to be soldered to the test device and its ability to provide a measurement of the waveform on the target IC pin during the injection. Methods for reconstructing the pin waveform based on probe measurements are discussed. Initial results indicate that the presented probe is generally insensitive to landing position variations and can accurately provide the waveform at the target IC during an injection. Future work is focused on further validation of the presented probe. © 2024 IEEE.

关键词： Probes

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On the Permittivity of XT-CF20

On the Permittivity of XT-CF20

引用

2023 IEEE Symposium on electromagnetic compatibility and Signal/Power Integrity, EMC+SIPI 2023

作者： Harmon, Aaron Zhang, Wei Khilkevich, Victor Missouri University of Science and Technology Dept. of Electrical and Computer Engineering Electromagnetic Compatibility Laboratory RollaMO United States

ISBN: (纸本)9798350309768

In this work, the permittivity of a 3D-printed carbon fiber-loaded anisotropic material, XT-CF20, is examined further. The microstructure of XT-CF20 is first examined via optical imaging and is shown to be composed of inclusions that are aligned with the print direction of the sample. The permittivity tensor for the aligned microstructure is then measured using a capacitive measurement technique and simulations are provided to demonstrate the validity of this measurement method. The simulated permittivity values for XT-CF20 samples with varying infill structures are then presented and compared to the measured permittivity values of said samples. An error of less than 12% between the simulated and measured permittivity values was observed validating the measured permittivity tensor and claims about the cause of the anisotropy presented in this work. The pronounced effect of a sample's infill on the permittivity tensor of the sample is then discussed along with the conclusions of this work and possible future topics of work for the authors. © 2023 IEEE.

关键词： Permittivity

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Design and Construction of an Arbitrary Pulse Compressive Amplifier

Design and Construction of an Arbitrary Pulse Compressive Am...

引用

2023 IEEE Symposium on electromagnetic compatibility and Signal/Power Integrity, EMC+SIPI 2023

作者： Goins, Cody Harmon, Aaron Khilkevich, Victor Beetner, Daryl Missouri University of Science and Technology Dept. of Electrical and Computer Engineering Electromagnetic Compatibility Laboratory RollaMO United States

ISBN: (纸本)9798350309768

Compressive pulse amplifiers are a class of amplifiers that convert long low amplitude signals into very broadband pulses of high amplitude, yielding a very high instantaneous peak power output pulse. However, in the realm of electronic immunity and susceptibility testing, very broadband short pulses are not always desired. This work presents a design for a compressive amplifier that is aimed at creating arbitrary pulsed signals of varying bandwidths. Limitations of the achievable gain and methods used are discussed. © 2023 IEEE.

关键词： Broadband amplifiers

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Modelling Weave effect in PCBs using 2D cross-sectional analysis

Modelling Weave effect in PCBs using 2D cross-sectional anal...

引用

2024 IEEE International Symposium on electromagnetic compatibility, Signal and Power Integrity, EMC+SIPI 2024

作者： Khilkevich, Victor Hinaga, Scott Missouri University of Science and Technology Dept. of Electrical and Computer Engineering Electromagnetic Compatibility Laboratory RollaMO United States Cisco Systems Inc San JoseCA United States

ISBN: (纸本)9798350360394

Printed circuit board dielectric substrates are composite materials produced by embedding fiber glass fabrics into epoxy resin. Because of this the medium in the PCB transmission lines is inhomogeneous which often leads to degradation of the signal integrity performance of the lines, particularly due to the differential skew. The detrimental effect of the fiber weave can be modeled relatively accurately using full-wave analysis, but at a high computational cost. Alternative modelling techniques are less demanding, but often lack accuracy. This article investigates a possibility of using the 2D cross-sectional analysis for the fiber weave effect modeling, which considerably decreases the computational cost of modeling while retaining the accuracy inherent to the field solvers. © 2024 IEEE.

关键词： System-on-chip

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On the Feasibility of a Direct Injection Probe with a Capacitively Coupled Return and Integrated Voltage Monitor

On the Feasibility of a Direct Injection Probe with a Capaci...

引用

IEEE International Symposium on electromagnetic compatibility (EMC)

作者： Aaron Harmon Daniel Szanto Victor Khilkevich Daryl Beetner Dept. of Electrical and Computer Engineering Electromagnetic Compatibility Laboratory Missouri University of Science and Technology Rolla MO USA

ISBN: (数字)9798350360394

ISBN: (纸本)9798350360400

关键词： Pins Probes Monitoring

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On the Permittivity of XT-CF20

On the Permittivity of XT-CF20

引用

IEEE International Symposium on electromagnetic compatibility (EMC)

作者： Aaron Harmon Wei Zhang Victor Khilkevich Dept. of Electrical and Computer Engineering – Electromagnetic Compatibility Laboratory Missouri University of Science and Technology Rolla MO USA

In this work, the permittivity of a 3D-printed carbon fiber-loaded anisotropic material, XT-CF20, is examined further. The microstructure of XT-CF20 is first examined via optical imaging and is shown to be composed of inclusions that are aligned with the print direction of the sample. The permittivity tensor for the aligned microstructure is then measured using a capacitive measurement technique and simulations are provided to demonstrate the validity of this measurement method. The simulated permittivity values for XT-CF20 samples with varying infill structures are then presented and compared to the measured permittivity values of said samples. An error of less than 12% between the simulated and measured permittivity values was observed validating the measured permittivity tensor and claims about the cause of the anisotropy presented in this work. The pronounced effect of a sample’s infill on the permittivity tensor of the sample is then discussed along with the conclusions of this work and possible future topics of work for the authors.

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Design and Construction of an Arbitrary Pulse Compressive Amplifier

Design and Construction of an Arbitrary Pulse Compressive Am...

引用

IEEE International Symposium on electromagnetic compatibility (EMC)

作者： Cody Goins Aaron Harmon Victor Khilkevich Daryl Beetner Dept. of Electrical and Computer Engineering - Electromagnetic Compatibility Laboratory Missouri University of Science and Technology Rolla MO USA

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Modelling Weave effect in PCBs using 2D cross-sectional analysis

Modelling Weave effect in PCBs using 2D cross-sectional anal...

引用

IEEE International Symposium on electromagnetic compatibility (EMC)

作者： Dr. Victor Khilkevich Scott Hinaga Dept. of Electrical and Computer Engineering – Electromagnetic Compatibility Laboratory Missouri University of Science and Technology Rolla MO USA Cisco Systems Inc San Jose CA USA

ISBN: (数字)9798350360394

ISBN: (纸本)9798350360400

关键词： Geometry Analytical models Accuracy Computational modeling Printed circuits Glass Nonhomogeneous media Fabrics Computational efficiency Signal integrity

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Broadband Circularly Polarized SIW-Based H-Plane Horn Antenna for X/Ku Band Applications

Broadband Circularly Polarized SIW-Based H-Plane Horn Antenn...

引用

Antennas and Propagation & USNC/URSI National Radio Science Meeting

作者： Anil Kumar Nayak Igor M. Filanovsky Saptarshi Ghosh Kambiz Moez Amalendu Patnaik Dept. of ECE Advanced Micowave Lab. Indian Institute of Technology Roorkee India Dept. of Electrical and Computer Engineering iCAS Laboratory University of Alberta Canada Dept. of Electrical Engineering Applied Electromagnetic Laboratory Indian Institute of Technology Indore India

ISBN: (数字)9798350369908

ISBN: (纸本)9798350369915

In this paper, a circularly polarized (CP) substrate-integrated waveguide (SIW)-based H-plane horn antenna with broader impedance bandwidth and higher peak realized gain (PRG) for armature satellite services (X-band, 8–12 GHz) and broadcast satellite (Ku-band, 12–18 GHz) applications is presented. A tapered microstrip transition is used in the feeding section to obtain the broadband characteristics. In addition, the feeding component of the antenna utilizes three quarter-wavetransformers to enhance impedance matching and widen the bandwidth. To generate the CP, two rows of rectangular slots are etched from both the top and bottom metal surfaces of the design. The antenna is designed, fabricated, and tested. The measured fractional impedance bandwidth of 41.6%, the 3-dB axial ratio bandwidth of 3.8 GHz, the maximum PRG of 6.95 dBic, the maximum radiation efficiency (simulated) of 87 %, and the cross-polarization level below -40 dB have been achieved at the center frequency of 13.2 GHz.

关键词： Antenna measurements Horn antennas Satellite broadcasting Bandwidth Broadband communication Frequency measurement Broadband antennas

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Broadband High Gain SIW-Based H-Plane Horn Antenna for Ku/K Band Application

Broadband High Gain SIW-Based H-Plane Horn Antenna for Ku/K ...

引用

Antennas and Propagation & USNC/URSI National Radio Science Meeting

ISBN: (数字)9798350369908

ISBN: (纸本)9798350369915

In this paper, a substrate-integrated waveguide (SIW)-based H-plane horn antenna with a broader impedance bandwidth and high peak realized gain (PRG) for broadcast satellite (Ku/K band, 12.5-26.5 GHz) and fixed satellite K band, 18-26.5 GHz) services applications is presented. A tapered microstrip transition is used in the feeding section to obtain the broadband characteristics. In addition, the multistrip transition also helped to enhance the fractional impedance bandwidth (FIBW), radiation characteristics and to improve the PRG. This mechanism of bandwidth increase can be explained by applying the coupled resonators theory. The antenna is designed, fabricated, and tested. The measured FIBW of 16.3%, the PRG of 10.56 dBi at the end-fire direction, the maximum radiation efficiency of 88.56%, and the cross-polarization level below - 35 dB have been achieved at the center freqency of 19 GHz.

关键词： Antenna measurements Satellite antennas Horn antennas Satellite broadcasting Bandwidth Broadband communication Broadband antennas

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