Test Whats new message.
Scheduled Maintenance on Monday 1/13/2025
Single article sales and account management will be unavailable from 5:00 AM - 7:00 PM ET (09:00 - 23:00 UTC). We apologize for the inconvenience.
Showing 1-25 of 41 results
- Sort
Filter Results
Show
Sort By
Results
Evaluating the Crosstalk Current and the Total Radiated Power of a Bent Cable Harness Using the Generalized MTL Method
Yansheng Wang;Ying S. Cao;Dazhao Liu;Richard W. Kautz;Nevin Altunyurt;Jun Fan
This paper presents a general formulation of the generalized multiconductor transmission line (GMTL) method to model a parallel cable harness including straight and bent wires. The parallel cable harness here indicates the uniform cross-sectional wire distribution. The GMTL equations are solved recursively based on the perturbation theory. This GMTL method facilitates an accurate evaluation of the...Show More
A Generalized Multiple-Scattering Method for Modeling a Cable Harness With Ground Connections to a Nearby Metal Surface
Yansheng Wang;Ying S. Cao;Dazhao Liu;Richard W. Kautz;Nevin Altunyurt;Jun Fan
This paper proposes a generalized multiple-scattering (GMS) method to evaluate the current distribution on a cable harness with ground connections to a nearby metal surface. The GMS method is a hybrid method combining the transmission line theory and the method of moments. The GMS method uses the generalized multiconductor transmission line (GMTL) solver for the cable harness part and the mixed-po...Show More
Characterizing Radiation Physics and EMI Mitigation for Heatsinks
Xiong Yang;Ying S. Cao;Xu Wang;Ling Zhang;Lijun Jiang;Shiquan He;Huapeng Zhao;Jun Hu;Jun Fan;James. L. Drewniak
2018 IEEE International Conference on Computational Electromagnetics (ICCEM)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
Unintential radiation caused by EMI (electromagnetic interference) trouble-makers has always been a vital issue to deal with. Among them, the radiation from heatsinks is a tough problem. In this paper, a characteristic mode (CM) method is proposed to identify the radiation hot spots for heatsink, and to explain the radiation phtsics. With the proposed method, by applying integral-equation (IE) bas...Show More
Applying the Multiple Scattering (MS) Method to Evaluate the Current Response on a Cable Harness Due to an Incident Plane Wave
Yansheng Wang;Ying S. Cao;Dazhao Liu;Richard Kautz;Nevin Altunyurt;Jun Fan
2018 IEEE International Conference on Computational Electromagnetics (ICCEM)
Year: 2018 | Conference Paper |
Cited by: Papers (4)
In this paper, the MS method is applied to solve an immunity problem of harness-body co-simulation. In this immunity problem, the structure under study consists of two parts: the cable harness part (harness) and the metal surface part (body). The harness is solved using the generalized multiconductor transmission-line (GMTL) solver and the body is solved using the mixed-potential integral equation...Show More
Correcting Antenna Pattern in Offset Measurements Based on Equivalent Dipole Moments
Yansheng Wang;Ying S. Cao;Jun Fan;Songping Wu;Zhiping Yang;Shuai Jin;Jianmin Zhang;Tun Li
2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)
Year: 2018 | Conference Paper |
Cited by: Papers (4)
Ahstract-A correct antenna pattern is required to ensure the accurate evaluation of antenna design, total radiated power (TRP), total isotropic sensitivity (TIS), receiver sensitivity and etc. However, in some cases the antenna pattern is obtained off-center, which degrades its accuracy. In this paper, an algorithm based on the equivalent dipole moment method is proposed to correct the offset ante...Show More
Differential Integrated Crosstalk Noise (ICN) Mitigation in the Pin Field Area of SerDes Channel
Bichen Chen;Junda Wang;Ying S. Cao;Muqi Ouyang;Yansheng Wang;Shuai Jin;Guangyao Shen;Xusheng Liu;Xiping Peng;Jun Fan
2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)
Year: 2018 | Conference Paper |
Cited by: Papers (9)
The integrated crosstalk noise (ICN) has been widely used as an alternative to the insertion crosstalk ratio (ICR) for channel crosstalk evaluation in the IEEE 802.3ba standard. In this work, the differential ICN mitigation scheme by using idea of orthogonality is implemented in two adjacent differential pairs first. In the full pin map area of SerDes channel, new pin map patterns based on such sc...Show More
PCB Edge Shielding Effectiveness Evaluation and Design Guidelines
2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)
Year: 2018 | Conference Paper |
Cited by: Papers (6)
Edge plating and via stitching connecting ground planes are two common edge treatments to suppress electromagnetic interference (EMI) from multilayer printed circuit boards (PCB). One critical parameter for stitching via is the spacing between vias. At higher frequencies, it is desirable to plate the edges of PCB, and a gap is required in the plating to accommodate the break-off tabs. In this pape...Show More
EMI Radiation Mitigation for Heatsinks Using Characteristic Mode Analysis
Xiong Yang;Ying S. Cao;Xu Wang;Ling Zhang;Shiquan He;Huapeng Zhao;Jun Hu;Lijun Jiang;Albert Ruehli;Jun Fan;James. L. Drewniak
2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)
Year: 2018 | Conference Paper |
Cited by: Papers (9)
Electromagnetic interference (EMI) radiation is one of the vital problems that design engineers may face. As the frequency of an electronic device increases, the potential for a heatsink to act like a radiating antenna also increases. In this paper, characteristic mode (CM) analysis has been applied to investigate the radiation mechanism for the flat heatsink. With the eigencurrent distribution fr...Show More
EMI Modeling for Antenna-Chassis System Using Characteristic Mode Analysis
2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
Characteristic mode (CM) analysis has been widely used in antenna geometry design, antenna location optimization, and feeding positions, etc. CM analysis has seldomly been used in electromagnetic interference (EMI) modeling. Meanwhile, interactions between the antenna and the vehicle body were modeled with full-wave simulation, but the coupling mechanism has been veiled. In this paper, characteris...Show More
In this paper, the radiation physics of edge-coupled connector is investigated with sub-structure characteristic modes and the current on the signal traces of different wafers is identified as the trouble maker for the final electromagnetic interference.Show More
Z-Directed Component (ZDC) Technology for Power Integrity Applications
Keith B. Hardin;Ying S. Cao;Ahmad Hosseinbeig;Biyao Zhao;Nana Dikhaminjia;Zachary C. N. Kratzer;John T. Fessler;James L. Drewniak
An important aspect of ensuring the power integrity of a power distribution network (PDN) design is to determine the layout, value, package size, and number of decoupling capacitors. To solve the limitation of the vertical connection of the surface-mounting-type capacitor to the power net area fill, a new concept of a capacitor denoted the Z-directed component (ZDC) is proposed in this paper. Ther...Show More
PCB PDN Prelayout Library for Top-Layer Inductance and the Equivalent Model for Decoupling Capacitors
Sichen Yang;Ying S. Cao;Hanzhi Ma;Jonghyun Cho;Albert E. Ruehli;James L. Drewniak;Erping Li
The power distribution network (PDN) of a high-speed printed circuit board requires a high-performance power supply. The total equivalent inductance above the top ground plane is an important part of PDN design and is regarded as Labove. In this paper, an inductance library for different structures of capacitor connections and capacitor sizes has been built, which is essential for PDN design. comp...Show More
Evaluating Field Interactions Between Multiple Wires and the Nearby Surface Enabled by a Generalized MTL Approach
Yansheng Wang;Dazhao Liu;Ying S. Cao;Richard W. Kautz;Nevin Altunyurt;Sandeep Chandra;Jun Fan
Interactions between a cable harness containing multiple wires and the nearby metal surface can be evaluated by full-wave methods. Though these methods can calculate the interactions with great accuracy, they have long simulation times and large memory requirements when dealing with complex wire structures. The multiple scattering (MS) approach by treating the cable harness and the surface separat...Show More
Inductance model of decoupling capacitors including the local environment
Tamar Makharashvili;Ying S. Cao;Albert E. Ruehli;James Drewniak;Daryl G. Beetner
2017 IEEE 26th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS)
Year: 2017 | Conference Paper |
Cited by: Papers (5)
The key purpose of power distribution networks is to maintain a low impedance power source for integrated circuit(s) for the stable supply voltage. In this paper, using the equivalent series capacitor inductance leads to inaccurate estimates of power bus impedance. A simple modeling approach is presented to estimate the inductance associated with the decoupling capacitors which accounts for the ca...Show More
Investigation of the radiation mechanism for high-speed connectors
Xu Wang;Ying S. Cao;Lijun Jiang;Albert E. Ruehli;Shiquan He;Huapeng Zhao;Jun Hu;Jun Fan;James. L. Drewniak
2017 IEEE 26th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS)
Year: 2017 | Conference Paper |
Cited by: Papers (3)
In this paper, the radiation mechanism of the high-speed connectors are investigated by the distributive power radiation formulation and characteristic modes theory. It is shown that hotpot can be identified by the distributive formulation method and the un-symmetry of geometry will cause unbalanced mode current.Show More
EMI radiation physics using generalized characteristic mode (GCM) analysis with loss for practical structures
Ying S. Cao;Xu Wang;Yansheng Wang;Lijun Jiang;Albert E. Ruehli;Shiquan He;Huapeng Zhao;Jun Hu;Jun Fan;James. L. Drewniak
2017 IEEE 26th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS)
Year: 2017 | Conference Paper |
Cited by: Papers (6)
Characteristic mode analysis has been proposed for lossless case for decades. However, for real electromagnetic interference (EMI) structures, such as printed circuit board (PCB) midplane connector and heat sink, lossy material (such as copper) and terminations (resistive loads) are unavoidable which tradidiotnal CM method cannot handle. In this paper, a generalized CM analysis for lossy material ...Show More
'Dog-bone' geometry modeling based on PEEC for package PDN
Tuomin Tao;Hanzhi Ma;Chenxi Huang;Ying S. Cao;James L. Drewniak;Erping Li
2017 IEEE Electrical Design of Advanced Packaging and Systems Symposium (EDAPS)
Year: 2017 | Conference Paper |
Dog-bone structure has been widely used in package PDN, yet it has not been thoroughly investigated. In this paper, the associated inductance for the dog-bone structure is studied with the partial element equivalent circuit (PEEC) method and CST. PEEC method is based on the electrical field integral equation (EFIE) and it serves as a bridge between electromagnetic problems and circuit ones. In thi...Show More
The efficient equivalent model for decoupling capacitors of power distribution network
Sichen Yang;Er-Ping Li;Ying S. Cao;Hanzhi Ma;Jonghyun Cho;Albert E. Ruehli;James. L. Drewniak
2017 IEEE Electrical Design of Advanced Packaging and Systems Symposium (EDAPS)
Year: 2017 | Conference Paper |
Cited by: Papers (1)
Decoupling capacitor is an essential part of power distribution network (PDN) of a high speed printed circuit board (PCB) for power noise regulation. The total equivalent inductance above the top ground plane looking into the decoupling capacitor is regarded as Labove which is an important part of PDN in order to meet the target impedance. Creating an approximate model for decoupling capacitor is ...Show More
A novel Z-directed embedded component for the reduction of voltage ripple on the power distribution network for PCBs
Biyao Zhao;Keith Hardin;Ahmad Hosseinbeig;Ying S. Cao;Nana Dikhaminjia;Zach Kratzer;John Fessler;James Drewniak
A new capacitor package and PCB embedding technique is introduced to significantly reduce the system power distribution network impedance at the pads of surface mounted integrated circuits. The capacitor is multi-layer ceramic capacitor (MLCC) that is a right cylindrical shape with via channels in the outer wall along the axis of the part. The capacitor called a Z-Directed component (ZDC) is then ...Show More
Characterizing EMI radiation physics for edge-and broad-side coupled connectors
Ying S. Cao;Xu Wang;Wending Mai;Yansheng Wang;Lijun Jiang;Albert E. Ruehli;Shiquan He;Huapeng Zhao;Jun Hu;Jun Fan;James. L. Drewniak
2017 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)
Year: 2017 | Conference Paper |
Cited by: Papers (8)
Electromagnetic radiation for a printed circuit board (PCB) midplane connector is studied in this paper. By applying integral-equation (IE) based method and characteristic mode (CM) analysis, the current is split into radiating and non-radiating ones. The radiated power from each part of the structure can be quantified using the radiating current. Therefore, the radiation hot spot can be identifie...Show More
A novel z-directed embedded component for the reduction of voltage ripple on the power distribution network for PCBs
Biyao Zhao;Keith Hardin;Ahmad Hosseinbeig;Ying S. Cao;Nana Dikhaminjia;Zach Kratzer;John Fessler;James Drewniak
2017 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)
Year: 2017 | Conference Paper |
Cited by: Papers (1)
A new capacitor package and PCB embedding technique is introduced to significantly reduce the system power distribution network impedance at the pads of surface mounted integrated circuits. The capacitor is multi-layer ceramic capacitor (MLCC) that is a right cylindrical shape with via channels in the outer wall along the axis of the part. The capacitor called a Z-Directed component (ZDC) is then ...Show More
Quantifying EMI: A Methodology for Determining and Quantifying Radiation for Practical Design Guidelines
Ying S. Cao;Yansheng Wang;Lijun Jiang;Albert E. Ruehli;Jun Fan;James L. Drewniak
Radiation is a vital mechanism affecting electromagnetic interference (EMI), noise control, and performance optimization in today's electronic designs. Due to tight electromagnetic compatibility standards, it becomes increasingly important to diagnosis the radiation hot spot in the radiation process before the mitigation is applied. In this paper, the characteristic mode analysis has been implemen...Show More
Inductance Extraction for PCB Prelayout Power Integrity Using PMSR Method
Ying S. Cao;Tamar Makharashvili;Jonghyun Cho;Siqi Bai;Samuel Connor;Bruce Archambeault;Lijun Jiang;Albert E. Ruehli;Jun Fan;James L. Drewniak
Proper power integrity (PI) analysis is required for printed circuit board (PCB) power distribution network (PDN) design. Top-layer interconnect inductance for PI has always been a vital concern for high-speed industry. Developing a simple physics-based equivalent circuit model for critical structures is essential for understanding the physics of the system and for intelligent designs. In this pap...Show More
The Derived Equivalent Circuit Model for Magnetized Anisotropic Graphene
Due to the static magnetic field, the conductivity for graphene becomes a dispersive and anisotropic tensor, which complicates most modeling methodologies. In this communication, a novel equivalent circuit model is proposed for graphene with the magnetostatic bias based on the electric field integral equation. To characterize the anisotropic property of the biased graphene, the resistive part of t...Show More
New detailed understanding of the mechanism of radiation in interconnect problems
Ying S. Cao;Li Jun Jiang;Albert E. Ruehli;Jun Fan;James. L. Drewniak
2016 IEEE 25th Conference on Electrical Performance Of Electronic Packaging And Systems (EPEPS)
Year: 2016 | Conference Paper |
Electromagnetic radiations from parasitic structures such as electronic interconnections are very difficult to diagnose because the ability to identify the specific sources are missing. Mainly, the source of radiations cannot be identified separately. Here, the partial element equivalent circuit (PEEC) method is extended to diagnose the radiation and its distribution. For the first time we identif...Show More
IEEE Account
Purchase Details
Profile Information
Need Help?
- US & Canada: +1 800 678 4333
- Worldwide: +1 732 981 0060
- Contact & Support
- About IEEE Xplore
- Contact Us
- Help
- Accessibility
- Terms of Use
- Nondiscrimination Policy
- Sitemap
- Privacy & Opting Out of Cookies
A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity.
© Copyright 2025 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.