This report describes a fully automatic placement tool for PCBs (printed circuit boards), nap (nonhierarchical automatic placement) that combines approaches from several different placement heuristics developed both for PCB and VLSI chip placement. Although the problem of placement for a PCB can be abstractly cast into the same formalism as the problem of VLSI cell placement, a practical tool m...

In order to meet the requirements of cable fault detection, a new structure of piezoelectric accelerometer was designed and analyzed in detail. The structure was composed of a seismic mass, two sensitive beams, and two added beams. Then, simulations including the maximum stress, natural frequency, and output voltage were carried out. Moreover, comparisons with traditional structures of piezoele...

In this study, the physical properties of briquettes produced from two different biomass feedstocks (sawdust and date palm trunk) and different plastic wastes, without using any external binding agent, were investigated. The biomass feedstocks were blended with different ratios of two waste from electrical and electronic equipment (WEEE) plastics (halogen-free wire and printed circuit boards (P...

Detecting small, densely distributed objects is a significant challenge: small objects often contain less distinctive information compared to larger ones, and finer-grained precision of bounding box boundaries are required. In this paper, we propose two techniques for addressing this problem. First, we estimate the likelihood that each pixel belongs to an object boundary rather than predicting ...

This paper considers the operation of component placement equipment for the assembly of printed circuit boards (PCBs) in a medium volume, medium variety manufacturing environment. It focuses on the setup management and operational planning issues associated with productive use of these expensive resources. The concept of replanning is introduced to adapt to changes in the production environment...

Origami is traditionally implemented in paper, which is a passive material. This research explores the use of material with embedded electronics such as PCB (Printed Circuit Boards) as the medium for origami folding in order to create an interactive folding experience and to generate foldable objects with added functionalities. PCBs are produced as 2D shapes. By folding PCB arrays it is possibl...

In this paper, a novel concept for ultra-wideband simultaneous switching noise (SSN) mitigation in high-speed printed circuit boards (PCBs) is proposed. Using complementary spiral resonators (CSRs) etched on only a single layer of the power plane and cascaded co-centrically around the noise port, ultra-wideband SSN suppression by 30 dB is achieved in a frequency span ranging from 340MHz to beyo...

We are developing high-speed interconnect technology for servers to meet customers’ needs for transmitting huge amounts of data as quickly as possible. High-speed interconnect technology consists of high-speed I/O circuits and high-speed printed circuit boards (PCBs), and these technologies are optimized to achieve the target performance. This paper describes the architecture of I/O circuits th...