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Proximity to the touch sensitive display in thin form factor mobile devices puts a stringent upper limit on the temperature (and hence the VMAX) at which the SOC may be operated, making the industrial design sometimes limited by the thermals, rather than reliability. The tradeoff between the VMAX and the distance between the SOC and the touch display (Zht) is systematically explored. A simple analytical...
Owing to NAND flash technology facing its scaling limit, resistive random access memory (RRAM) with simple film stack and no cross coupling issue between cells is a promising candidate for future high density memory application [1,2]. The 1TnR architecture with 3D vertical RRAM (VRRAM) structure realizes ultra-low bit cost for high compact density array [3,4]. However, this novel 1TnR structure and...
During the operation of a Thermoelectric (TE) module, one side of it has thermal expansion and the other side has cooling shrinkage. The corresponding resulted tensile and compressive stresses at the interfaces of its constituent materials will often cause the fatigue failure, especially during the repeated operations of the module. However, knowing the life of TE Modules is often required no matter...
A domain decomposition method based on equivalence principle algorithm is used for analyzing and calculating radiation problems of large-scale arrays. The adaptive cross approximation method is introduced to accelerate computing the translate operator, and the repeatability of the array is removed. Numerical results demonstrate that the time consumption and the memory usage are all reduced.
A fast wideband electromagnetic scattering analysis method based on Taylor expansion and higher order hierarchical vector basis functions is proposed. By extracting a phase term from the green function, the remaining exponent term can be approximated by its truncated Taylor expansion. After that, some computationally intensive matrices related to the geometry of the object can be computed in advance...
We introduce a kernel-independent wideband nested equivalent source approximation method. The nested equivalent source approximation (NESA), proposed by these authors to solve low frequency problems with linear complexity, is extended here to electrically large multiscale structures. The low frequency algorithm is directly employed at the bottom levels of an Octree clustering; in the high frequency...
The increasing proliferation of distributed energy resources on distribution systems has brought a number of network management and operational challenges; voltage variations have been identified as one of the dominant effects. Active distribution network management schemes organize the networks in an active approach through coordinating and controlling local controllable resources. A novel distributed...
A higher order Nystrom scheme for a marching-on-in-time (MOT) solution of the time-domain combined field integral equation (TD-CFIE) is developed to analyze the transient electromagnetic (EM) scattering from arbitrarily shaped perfect electrically conducting (PEC) closed objects. The curvilinear triangular patches are utilized to discretize the PEC objects. Moreover, the Lagrange interpolation polynomials...
A marching-on-in-time (MOT) based volume surface integral equation (VSIE) is proposed to analyse the transient electromagnetic scattering from the composite structures comprising perfect electrically conducting (PEC) bodies and inhomogeneous dispersive dielectric materials. Numerical results are given to demonstrate the accuracy of the proposed algorithm.
This paper concentrates on an efficient marching-on-in-time (MOT)-based time domain integral equation (TDIE) method for the analysis of the transient electromagnetic scattering from perfect electrically conducting (PEC) coated by multilayer thin materials. Like its frequency domain counterpart, the proposed method can reduce the number of unknowns significantly while reasonable accuracy can be achieved...
In order to reduce the computational cost, the basis functions are defined only on the boundary curve for bodies of revolution (BORs). A marching-on-in-degree (MOD) based time-domain electric field integral equation (TD-EFIE) method is proposed to analyze the transient electromagnetic scattering from perfectly electric conducting BORs with open structures. Moreover, the MOD method for the time domain...
A triple-transistor Doherty power amplifier (PA) architecture supports two in-phase input and output signals is proposed in this paper. To be specific, a single carrier PA is applied to operate in the low-power region, while two peaking PAs are used in the high-power region. Compared with classic configuration which needs four transistors to realize the same functionality, the proposed design greatly...
We present an analytical model of electromechanical coupling process of a bending type piezoelectric ultrasonic transducer. The piezoelectric transducer consists of two groups of PZT elements sandwiched between four thin electrodes. The ceramics are thickness polarized, and the two groups of ceramics are polarized in opposite directions. All the PZT elements are clamped by a screwed connection between...
This paper investigates the pharmacokinetics of a drug delivery system for the purpose of understanding the biodistribution of gentamicin delivered to the blood and tissues by intravenous (IV) and intratracheal (IT) administrations. Numerical solutions for both two-compartment (plasma and tissue) and three-compartment (lung + PFC, plasma, and tissue with IV, IT-Top-fill and IT-Slow fill administrations)...
The development of UHV transmission technology brings longer transmission distance, higher towers and more complicated terrain along the transmission lines, which make the shunt performance of transmission line under lightning stroke more diversiform compared to conventional ones. This paper discusses the effects of factors, such as lightning current waveform, footing resistance, transmission line...
Highly scaled GaN T-gate technology offers devices with high ft/fMAX, and low minimum noise figure while still maintaining high breakdown voltage and high linearity typical for GaN technology. In this paper we report an E-band GaN power amplifier (PA) with output power (Pout) of 1.3 W at power added efficiency (PAE) of 27% and a 65-110 GHz ultra-wideband low noise amplifier (LNA). We also report the...
In this paper, a new type of noise, different from the conventional Random Telegraph Noise (RTN), has been found and analyzed in a resistance random access memory (RRAM). The regular RTN signal is governed by the trapping and detrapping of the electrons. It will appear regularly with a two-level current and the amplitude of the RTN is smaller. However, an abnormal noise, called giant noise, was observed...
A novel resistive memory with the TiN/Ti/HfOx/TiN stack is proposed and fully integrated with 0.18 µm CMOS technology. The excellent memory performances such as low operation current (down to 25 µA), low operation voltage (<1.5 V), high ON/OFF resistance ratio (above 100), and fast switching speed (10 ns) have been demonstrated for this ReRAM. Moreover, the device exhibits excellent scalability...
An HgCdTe photoconductive infrared detector with metallic nanostructures has been numerically studied. The plasmonic resonant absorption and the photo current response spectra of the detector are investigated by using a combination of the FDTD method and FEM method. The simulated results show the dependence between the geometric design and the performance of the detector. A higher photo response can...
In this research, a new structure and process integration for backside illuminated CMOS image sensor by using thin wafer handling technology is proposed. First of all, the wafer of a 3 Mega pixel CMOS image sensor is temporary bonded to a silicon carrier wafer with thermal plastic material and ZoneBond technology. Then the CMOS wafer is thinned down to less than 5 μm for light detection from the backside...
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