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Frequency selective metamaterial-inspired antenna for dual-frequency operation incorporating two switches (SWs) has been proposed. Length of radiating element is varied which provides easy frequency re-configurability at WiMAX (3.5–3.57 GHz) and WLAN (5–5.5 GHz). The proposed antenna offers impedance bandwidths of 13.6% (at 3.39 GHz) and 17.2% (at 5.05 GHz) with average peak gains of 1.49 dB and 1...
In this paper, a zeroth-order resonating circular patch antenna with triangular stub is proposed. The proposed antenna has an electrical size of 0.23λ0 × 0.13λ0 × 0.01λ0 with an impedance bandwidth (|S11| < −10 dB) of 21.4% (resonating frequency 2.8 GHz). Circuit values of proposed equivalent circuit have been extracted using advanced design system to plot dispersion diagram which shows zeroth...
A compact CPW-fed metamaterial (MTM)-inspired zeroth-order resonating (ZOR) antenna is presented with backed ground plane. Such MTM antenna consists of thin conducting line and a bow-tie shaped patch connected to CPW feed. The proposed structure shows compact size with radiating element dimensions of $0.095{{\lambda }_{\text{o}}} \times 0.042{{\lambda }_{\text{o}}} \times 0.013{{\lambda }_{o}}$ by...
This paper presents Unified Communication X (UCX), a set of network APIs and their implementations for high throughput computing. UCX comes from the combined effort of national laboratories, industry, and academia to design and implement a high-performing and highly-scalable network stack for next generation applications and systems. UCX design provides the ability to tailor its APIs and network functionality...
In this paper, an ultra-wideband ring-shaped metamaterial antenna with modified phi-shaped split ring resonator has been proposed. The proposed antenna has a size of 35 mm × 37 mm × 1.6 mm and shows dual-band characteristics. The proposed metamaterial antenna has an impedance bandwidth of 14% (centered at 2.65 GHz) and 114.5% (centered at 7.25 GHz) for the first and second band respectively. Modified...
A compact CPW-Fed CRLH metamaterial antenna is designed and developed in this paper. The design is based on a symmetric single layer CPW-Fed structure in which signal patch is connected to the CPW ground planes by introducing a strip. Proposed antenna shows two modes at 1.70 GHz and 5.30 GHz respectively. In addition to that this antenna offers excellent dipolar and omnidirectional radiation pattern...
In this paper, split ring resonator (SRR) loaded metamaterial (MTM) antenna with CPW and microstrip feed have been proposed. Two antenna structures are presented which have an antenna size of 50 mm × 40 mm × 2.56 mm. The proposed structure with CPW feed shows dual-band behavior with an impedance bandwidth of 9.1% (centered at 1.54 GHz) for first band and 9.8% (centered at 2.86 GHz) for second band...
In this paper a compact planar CPW-fed metamaterial antenna with closed ring resonator (CRR) has been proposed. It is observed that by employing CRR into the structure an extra band is found at 2.17 GHz (n = −1 mode) and therefore electrical size of the antenna is decreased significantly. CPW- feed is introduced to enhance the bandwidth and radiation efficiency of proposed antenna. This antenna is...
In this paper, a compact CPW-fed complimentary half split ring resonator (CHSRR) antenna for WLAN is proposed. The proposed antenna shows compact size (due to ZOR) with dimensions 0.18λ0× 0.15λ0× 0.03λ0 at center frequency of 5.57 GHz. Impedance Bandwidth of 14% (S11 < −10 dB) from 5.17–5.95 GHz has been achieved with monopole-type radiation pattern in xz-plane and dipolar-type radiation pattern...
This paper explores the performance and optimization of the IBM Blue Gene/Q (BG/Q) five dimensional torus network on up to 16K nodes. The BG/Q hardware supports multiple dynamic routing algorithms and different traffic patterns may require different algorithms to achieve best performance. Between 85% to 95% of peak network performance is achieved for all-to-all traffic, while over 85% of peak is obtained...
This is the first paper describing the IBM Blue Gene/Q interconnection network and message unit. The Blue Gene/Q system is the third generation in the IBM Blue Gene line of massively parallel supercomputers. The Blue Gene/Q architecture can be scaled to 20 PF/s and beyond. The network and the highly parallel message unit, which provides the functionality of a network interface, are integrated onto...
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