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An ATCA and FPGA-based Data Processing Unit for PANDA Experiment has been developed. The Unit features 5 Xilinx Virtex-4 FX60 FPGA chips and up to 10 GBytes DDR2 memory. High bandwidth connectivity is provided by 8 additional optical links using RocketIO ports and 5 Gbit Ethernet links to receive data from front-end electronics and transmit the data passed high level trigger to mass storage. A single...
A micromachined on-wafer probe is designed, fabricated and measured at W-Band as a proof of concept for probes operating at submillimeter wavelengths. A fabrication process is developed to create devices that combine a waveguide probe with a GSG probe tip on a 15 µm silicon substrate. This device is housed in a metal machined waveguide block that provides mechanical support for the probe and connection...
Summary form only given. Waveguide flanges pose a major limitation to precise measurements above 110 GHz. This paper describes measurements on a new flange which is compatible with the standard UG-387 waveguide interface (MIL-DTL-3922/67C) but which offers significant improvement in alignment and repeatability. The ring-centered flange has a precisely machined boss centered on the waveguide aperture...
The junction contact characteristics between single layer graphene (SLG) and Ti, where Ti is prepared by various deposition processes, are investigated physically (via Raman) and electrically (via 2-point or 4-point probe measurement and residual resistance methods). For Ti deposited by electron beam evaporation (EBM) process, there are no noticeable Raman shift and weak D band in Ti junction with...
We consider the problem of detecting the presence of pneumoconiosis in a patient on the basis of evidence found in chest radiographs. Abnormalities pertaining to pneumoconiosis appear in the form of opacities of various sizes; the profusion of these opacities determines the stage of the disease. We present a multiresolution approach whereby we segment regions of interest (ROIs) from the X-Ray image...
The paper reports the impact of TiN metal gate composition (Ti-rich vs. N-rich) and preparation methodology (atomic layer deposition-ALD vs. physical vapor deposition -PVD) on its thermal stability with HfO2 high-K dielectric, via both physical characterization (X-ray Photoelectron Spectroscopy-XPS, High Resolution TEM combined with Electron Energy Loss Spectroscopy-EELS), and electrical characterization...
In this work, a level set energy for segmenting the lungs from digital Posterior-Anterior (PA) chest x-ray images is presented. The primary challenge in using active contours for lung segmentation is local minima due to shading effects and presence of strong edges due to the rib cage and clavicle. We have used the availability of good contrast at the lung boundaries to extract a multi-scale set of...
A native alumina thin film existing on aluminium and its evolution in thermosonic gold wire bonding were characterized using high resolution transmission electron microscopy (HR TEM). It has been found that the partly fracture of this alumina film by the ultrasonic vibration allows the interdiffusion at the Au/Al interface, such that the intermetallic compounds (IMCs) are formed. The IMCs are identified...
Cu metallization has been widely applied in back-end-of-line (BEOL) of integrated circuit fabrication, as well as in advanced packaging such as 3-D interconnects and through silicon via (TSV). As the device feature size further shrinks copper diffusion barrier layers with high conductivity, good thermal stability and low Cu diffusion coefficient are to be developed. Amorphous metal alloy films of...
This paper describes the fast control and clock distribution system of BESIII experiment. The function of this system is transmitting fast control signals from trigger system to front-end electronics and readout electronics, receiving status signals from readout electronics for trigger system, and distributing system clock to trigger, front-end and readout electronics. The fast control signals include...
Recently, cooperative diversity has been introduced where single-antenna mobiles achieve uplink transmit diversity helping each other by relaying one another's messages. A variation of this principle is coded cooperation which partitions the codeword of each mobile and transmits portions of each codeword through independent fading channels. Coded cooperation framework has been easily extended using...
A 2.25GHz outphasing power amplifier is implemented in a 45nm LP digital CMOS process. The PA is designed in class-D mode for low output impedance and good linearity. The PA delivers 28.1dBm peak CW power with 19.7% system efficiency (includes all drivers). Average OFDM power is 21.4/20.3dBm with efficiency 8.0/6.5% when transmitting WiFi/WiMAX signals respectively.
The overall objective of BONSAI project (FP6, EC) is the development of ultrasensitive bio-imaging techniques based on novel multifunctional nanoparticles (NPs) with tailored optical and magnetic properties for visualizing complex cellular structures (in tissues and organs), receptors, tumour cells and masses. An important aspect to take into consideration involves the cellular responses to the impact...
The EC BONSAI Project intends to develop multifunctional nanoparticles with tailored optical and/or magnetic properties for visualizing complex cellular structures (in tissues and organs), receptors, tumor cells and masses. In this framework, here we will report on recent advances on the preparation of luminescent silicon nanoparticles, magnetic iron oxide nanoparticles and Au nanorods for bio-imaging...
In this paper we will present our latest research results of integrated quantum dot Schottky diodes and integrated silicon antenna for RF applications. Both, the quantum dot Schottky diodes and the antenna are integrated on Si substrates forming a simple mm-wave detection system, the rectifying antenna (RECTENNA). Within this work a specific antenna design, 1-dimensional array (single line antenna),...
A 100 Gb/s photonic integrated circuit at 1490 nm has been transmitted over 320 km using all-SOA amplification, demonstrating the applicability of PICs to address 55 THz of fiber bandwidth.
This paper studies the design and control issues of a two-stage push-and-pull system with lead-time quotation and stock decisions. To evaluate the performance of different designs of the system, we construct a decision model to minimize holding costs of the semi-finished product and the finished product, the late delivery cost, and customer waiting cost by optimizing base-stock level of the semi-finished...
In this paper we will present our latest research results of integrated silicon antennas for automotive radar applications (f = 80 GHz). The design procedure as well as simulation and first measurement results will be given. Within this work two antenna designs, a 1-dimensional array (single line antenna) and a 2-dimensional antenna array (4 lines with 4 patches), will be shown. First measurement...
This paper describes properties of monolithic W-band IMPATT oscillator, their integration into SIMMWICs and proves their basics functionality as mW power sources for simple cost effective and flexible mm-wave systems. In this oscillator system monolithic integrated IMPATT diodes are combined with coplanar waveguide resonator on unthinned silicon wafers for mm-wave operation (around 90 GHz).
We report on the design and fabrication of 585 GHz focal-plane arrays utilizing annular-slot antennas and twin-HEB devices. Design details and simulation results are presented. DC characteristics of the twin-HEB devices, including R-T and I-V curves, have been tested. In addition, initial RF measurement results of the focal-plane array (FPA) mixers are presented.
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