A5103017808- Electromagnetic Compatibility and Noise Suppression
- Electrostatic Discharge in Electronics
- Integrated Circuits and Semiconductor Failure Analysis
- Electromagnetic Compatibility and Measurements
- Semiconductor materials and devices
- Energy Harvesting in Wireless Networks
- Radio Frequency Integrated Circuit Design
- 3D IC and TSV technologies
- Antenna Design and Analysis
- Electronic Packaging and Soldering Technologies
- Indoor and Outdoor Localization Technologies
- VLSI and Analog Circuit Testing
- Advancements in PLL and VCO Technologies
- Radiation Effects in Electronics
- Advancements in Semiconductor Devices and Circuit Design
- Underwater Vehicles and Communication Systems
- Geological and Geophysical Studies
- Electrical Fault Detection and Protection
- Time Series Analysis and Forecasting
- Interconnection Networks and Systems
- Advanced Antenna and Metasurface Technologies
- Near-Field Optical Microscopy
- Silicon and Solar Cell Technologies
- Regional Development and Environment
- Wireless Body Area Networks
National University of Defense Technology
2012-2024
Beijing Normal University
2024
Ministry of Water Resources of the People's Republic of China
2024
Ministry of Natural Resources
2024
Tianjin Institute of Advanced Technology
2021-2023
A flexible dual-band antenna with a metamaterial structure (MS) is presented. Polyimide substance, which makes the thin and bendable, used as substrate for antenna. When MS placed between human's forearm, gain increased by 9.3 5.37 dB, radiation efficiency 48.4% 35.7%, at 2.45 5.8 GHz, respectively. In addition, specific absorption rate decreased more than 70%, considering limitations imposed Federal Communications Commission regulation of International on Non-Ionizing Radiation Protection...
This paper presents a fully integrated reconfigurable all-band RF transceiver for GPS/GLONASS/ Galileo/Beidou in 55-nm CMOS. The incorporates three low-IF receivers (RXs) and one direct up-conversion BPSK transmitter (TX), which can be configured to receive any two global navigation satellite system (GNSS) signals or switched process the Chinese Beidou(I) signals. A switching module is provide connectivity between different front-end IF channel (IFC), will effectively simplify design...
Electromagnetic interference (EMI) issues are becoming crucial for three-dimensional integrated components which combine multi-core Systems-On-Chip, multi-band radio frequency circuits (RF), Giga-bit memories, as well advanced analog circuits. In this first paper, the technology roadmap towards 3D-ICs is illustrated and associated EMC challenges described. This paper also focuses on role of interposers, electrical parasitics, addresses concerns about signal power integrity.
This second part addresses a selection of topics related to Electromagnetic interference (EMI) issues in three-dimensional integrated components. Details about Through Silicon Via TSV) technology, modelling and parasitic effects are introduced the first part, then key concepts such as signal integrity (SI), power (PI), Interference introduced.
Abstract Organic field-effect transistors (OFETs) have been widely studied, but there are still challenges to achieving large-scale integration in organic complementary metal–oxide–semiconductor (CMOS) circuits. In this article, we discuss the issues on CMOS circuits from a device perspective. Our discussion begins with systematic analysis of principal parameters building block, inverter, including gain, noise margin, and power dissipation, as well relevant potential solutions. We then...
In this paper, the signal integrity (SI) and Electromagnetic Compatibility (EMC) performance of a microcontroller memory are simulated in 2D 3D assembly versions. Three types configurations investigated: conventional routing on printed-circuit-board, stacked dies with wire bonding Through-Silicon-Via (TSV). The study addresses bus conducted emission microcontroller. An equivalent model is presented for order reduction improved simulation efficiency. benefits integration highlighted, terms...
The paper based on the standards IEC61967-8 and IEC62132-8 aims to provide a new method expand working bandwidth of closed version IC-Stripline cell. By analyzing principle discussing limiting factors bandwidth, this presents slotted septum dielectric A 3D model cell is established in electromagnetic (EM) simulation software, S parameters voltage standing wave ratio (VSWR) are calculated. calculation results show that can frequency band from 0-6 GHz 0-7 0-11 GHz, respectively. measurement...
This article describes how to raise the TEM cells' operating bandwidth and lower their VSWR. A multi-stage curved-edge transition structure for minimizing VSWR a magnetic loss mechanism extending are proposed by evaluating workings constraints of cells. hybrid simulation strategy based on particle swarm algorithm 3D electromagnetic (EM) software is suggested in order identify optimal quickly. In EM software, cell's model created, return were solved for. It possible operational from 0–2 GHz...
Abstract As the conversion efficiency of solar cell approaching its theoretical limits, reducing power loss during collection and transmission process is a promising way to improve performance cell. Cleaved edges create recombination centers, causing up 0.8% abs (absolute efficiency) or even more for 156 × mm silicon Due complexity edge passivation technique, alternative methods are desired. This article proposes method minimize this problem. It found that most current comes from near...
Extending serverless computing to the edge has emerged as a promising approach support service, but startup containerized functions lead cold-start delay. Recent research introduced container caching methods alleviate delay, including cache entire or Zygote container. However, incurs memory costs. The system must ensure fast function and low cost of servers, which been overlooked in literature. This paper aims jointly optimize delay cost. We formulate an online joint optimization problem...
Underwater wireless sensor networks (UWSNs) provide a promising approach for ocean monitoring. Locating the nodes (SNs) in UWSNs is critical annotating data samples. However, global positioning system (GPS) not available underwater. The locations of SNs are usually interpreted from anchor which deployed at known on seafloor or sea surface. Due to characteristics such as node sparsity, network asynchrony, energy restriction and sound propagation speed uncertainty, locate SN accurately...
Abstract The pulsed jet is a novel and effective active mixing enhancement approach. For the transverse in supersonic crossflow, frequency influence investigated using three-dimensional Reynolds-averaged Navier–Stokes (RANS) equations coupled with SST k-ω turbulence model. averaged flow field properties of are better than those steady when considering efficiency penetration depth, especially for case being 50kHz. structures connected time, periodic wave generating moving downstream. size its...
The reconfigurable fault-tolerant routing algorithm in Mesh Topology Structure which belongs the field of network on chip has a feature, is that method achieves fault tolerance by using north last turning model and less-stored list. series merits: practical convenience, high fault-tolerance performance, low cost little hardware expense. Moreover, if there not any fault, XY with application certainty could ensure reliable transmission information, divides router into two parts including...
Blind Restoration of adaptive optics images is important in the field astronomical imaging and space object surveillance. Using multi frame blind deconvolution as main technique means for high resolution restoration, a general cost function deduced to deconvolve Poisson noise model image under Bayesian-MAP estimate framework. To minimize function, solution algorithm based on alternating recursion method proposed. In addition, asymmetric iteration introduced into process avoid converging...
A fully integrated dual-band RF receiver with a low-IF architecture is designed and implemented for GPS-L1 Compass-B1 in 55-nm CMOS process. The incorporates two independent IF channels 2 or 4 MHz bandwidth to receive the signals around 1.57 GHz respectively. By implementing flexible frequency plan, front-end synthesizer are shared operation save power consumption chip area, as well avoid any LO crosstalk. digital automatic gain control (AGC) loop utilized improve receiver's robustness by...
Microwave field near-field radiation imaging technology is widely used in the failure analysis of chips, but due to low resolution, it hard obtain distributions miniaturized and precision devices. In this article, we built two testing systems based on method electromagnetic induction diamond color-center, respectively. The traditional system uses a multilayer PCB microstrip, while novel nanoscale high-sensitivity sensing color centers design resonant microwave probes with measurement...
With the purpose of radiation emissions and immunity measurement large size high-frequency integrated circuits (ICs), three closed version IC-Stripline cells conforming to IEC standardswere designed in this paper expand uniform field region working frequency band traditional cell. In these cells, long cell expands 3 dB from × cm 8 cm, with bandwidth remaining as 6 GHz. The based on image theory further into two areas unchanged. third is a scaled-down theory, which can GHz 12 total area...
Prediction of electrostatic discharge (ESD) protection performance is critical for estimating reliability in the IC design. However, due to large injection and deep hysteresis encountered snapback ESD devices, failure current devices hard be predicted by simulation. In this article, a TCAD simulation method using shot noise model predict proposed first time. The transmission line pulse (TLP) test results show same trend as results, indicating that convenient effective current. It promising...
To combat the interference and damage caused by external EMP, TVS PIN diodes, two common electromagnetic protection components, are frequently used together. However, in practical applications, it is found that diode combined circuit turned on first does not play a role. This study examines this phenomenon using TVS-TVS3V3L4U diode-SMP1320. The findings indicate adding capacitance resistance between can successfully solve problem. of have some reference value for powerful EMP protection.
With the continuous improvement of chip integration, problem integrated circuit (IC) electromagnetic compatibility (EMC) is becoming more and prominent. The working frequency ICs requires a wider band IC-EMC measurement equipment. IC-Stripline cell important equipment in field IC-EMC. And recent years, several new types broadband cells have emerged, such as standard cell, dielectric slotted septum cell. Based on standards, paper compares radiation emission test results three analyzes reasons...
With electronic equipment to miniaturization, high-speed, integrated high-speed development, its electromagnetic sensitivity problems are increasingly prominent, and vulnerable the impact of complex environment damage. The limiter has characteristics small size, simple structure strong ability, which is widely used in all kinds RF device protection. In order enhance power capacity limiter, this paper adopts combination TVS PIN diodes make a high-power for S-band, contains two-stage TVS,...
Susceptibility level of low-dropout regulator (LDO) is measured based on direct power injection (DPI) method in this paper. Hardware and software standard DPI test bench set up with flow algorithm being optimized. Extraction analyzed, impedance simulation validates the which carried by vector network analyzer (VNA). A chip Elmer2 dedicated to EMC study used for measurements. The failure mechanism LDO module studied under EMI. On-chip sensor also interested nodes voltage extraction...