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Paper presents a fully printable chip less RFID tag using spur line resonators. Spectral signature technique of a spur line resonator circuit is used to detect tag's ID. The tag is capable of transmitting 12-bits for the bandwidth of 1.9 to 4.04 GHz. A spur line multi resonator and two micro strip fed UWB monopole antennas reside in chip less RFID tag. Spur line multi resonator is designed on three...
Network Function Virtualization (NFV) is promising to lower the network operator's capital expenditure and operational expenditure by replacing proprietary hardware-based network equipment with software-based virtual network functions that can be consolidated into telecom clouds. In particular, NFV provides an efficient way to deploy network services using service function chains that consist of a...
This paper presents an eigendecomposition approach for virtual resource embedding in cloud infrastructures. Instead of relying on combinatorial or iterative approaches, the method uses structural description of resource graphs to achieve near optimal joint node and link mapping. The solution extends and generalizes prior work on eigendecomposition of the adjacency matrices for undirected graphs to...
Software-defined elastic optical networks (SD-EONs) provide operators more flexibility to customize their optical infrastructure dynamically and adaptively, and network virtualization, i.e., infrastructure-as-a-service (IaaS), enables multiple tenants to share the substrate infrastructure efficiently. In this paper, we study how to provision virtual SD-EONs (vSD-EONs) with the correlated data and...
Nowadays, data centers deploy a large number of servers and network devices to provide various service functions (e.g. firewalls, deep packet inspection, content caches, WAN optimizers, etc.) and sufficient network connection. Most traffic in data centers is subject to treatment by multiple service functions (SFs) which form an ordered service function chain (SFC). In this paper, we study the energy-aware...
In network virtualization, the network services are decoupled from the underlying hardware infrastructure such that multiple virtual network requests can be mapped onto the same physical substrate network. The process of mapping virtual networks onto the substrate network with minimum resources while satisfying the constraints such as computing capacity, bandwidth and memory is referred to as virtual...
In this paper, we present the simulated design of a dual-polarized H-shaped aperture-coupled microstrip antenna for ultra-wideband radio frequency identification (UWB-RFID) applications. The antenna has a compact design (30 × 30 × 6.9 mm3) with a hybrid structure. The feed portion is on a Ferro A6M low-temperature co-fired ceramic (LTCC) substrate, while the square patches are deposited onto Rogers...
The need to high frequency applications with small packaging require to use microstrip and printed antenna with developing technique to go forward with advanced technology today. Miniaturization usually comes at a price of reduced bandwidth, in this paper; the bandwidth enhancement techniques for microstrip antenna is presented with a major emphasis on the recent trends of minimization techniques...
Silicon interposer technology enables the integration of multiple silicon dies on it providing fine pitch interconnects for die-to-die communication and Through-Silicon Vias (TSVs) for package/PCB level connections. Therefore, this technology has been identified as a viable solution for logic and memory types of applications where higher bandwidth in required. In the paper, we characterize thick (t=3μm;...
This paper presents an aperture-coupled microstrip antenna, which is operating at dual band of millimeter-wave (mmW) frequencies, 28GHz and 38GHz. The aperture antenna was integrated with multilayer substrate construct on 5-layers Low temperature Co-fiber Ceramic (LTCC) with 5 mils thickness. The driven patch was applied to enhance the bandwidth. The bandwidths using are 9.1 percent at 28GHz and 9...
The rapid deployment of cloud computing service needs a robust and efficient virtualization layer between the application and the physical hardware. Network Virtualization, which allows the co-existence of various logical networks on shared physical infrastructure, is an important technique to face this challenge. The optimal mapping of virtual resource to physical resource is a major issue in network...
The paper describes the analysis of the efficiency of the new technique of miniaturization of microstrip devices applied to the branch-line coupler design. The method is based on the replacement of transmission line segments of the coupler with the lowpass filters with the same phase response, which allows significant device size reduction. There are in the paper four designs of compact branch-line...
In this paper, a compact and broadband ridge substrate integrated waveguide (RSIW) is analyzed, which is low-loss and easy to fabricate. The RSIW is based on substrate integrated waveguide (SIW), and can be completed by inserting a longitudinal central partial-height cuboid metal block or etching a longitudinal central partial-height cuboid then coating the outer surface with metal. Analytical relationship...
This paper introduces a thin film-based wearable ultra-wideband (UWB) antenna implemented over an artificial magnetic conductor (AMC) in order to reduce the effect of human body and improve gain and bandwidth characteristics. The proposed AMC is implemented using a low-cost and easily-fabricated polydimethylsiloxane (PDMS) as a flexible substrate to enhance radiation properties of the wearable antenna...
In this paper, a novel wide band stacked segment microstrip patch antenna (MPA) with two layered RT/Duroid is proposed. Multi-layered stacked patches are designed with rectangular dimensions, and square slots are entrenched with first patch to excite them. A parametric study of dielectric thickness and stacked center is carried out to enhance the impedance bandwidth of the proposed antenna. The antenna...
In the present paper, the design of an artificially anisotropic substrate (AAS) with an aperture-coupled feeding structure is proposed for the generation of circular polarization (CP) at 28 GHz. The radiator configuration is constructed by assembling thin sheets with different relative permittivities as a stack for generating different effective permittivities for the wave components. It is demonstrated...
Network Virtualization is receiving more and more attention lately. It allows multiple parallel virtual networks to run on the shared physical infrastructure. In virtual network environment, a set of virtual networks share the resource of a common physical network although each virtual network is isolated from others. Therefore, bandwidth allocation mechanism is one of the important problems for network...
In the delivery of end-to-end services, Network Functions (NFs) are frequently utilized. Traditionally, these NFs are implemented on middle-boxes. Since physical middle-boxes are hardware-based, expensive and hard to maintain and upgrade, they are replaced by Virtual Network Functions (VNFs) following the trend of Network Function Virtualization (NFV). Nowadays services are implemented by the ordered...
Process flow and device performances of an industrial 300mm Silicon Photonics platform demonstrating 25Gb/s per data lane when associated with 55nm BICMOS are presented. Advanced designs targeting 56Gb/s and using this platform are introduced. Device improvements suitable to convert such demonstrators into products are shown. Backside reflector, 40Ghz photodiode as well as WDM capability are presented...
Seamless package-level integration of multiple dies for high-performance computing and networking requires broadband dense die-to-die interconnect. Organic packaging substrates offer lower cost and lower loss interconnect, whereas silicon interposers offer higher density interconnect. In this work, a silicon interposer is fabricated in a relatively inexpensive 0.35 μm CMOS technology as an alternative...
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