High-frequency acoustic communications achieving high bandwidth efficiency

2009 ◽  
Vol 126 (2) ◽  
pp. 561-563 ◽  
Author(s):  
H. C. Song ◽  
W. S. Hodgkiss ◽  
W. A. Kuperman ◽  
T. Akal ◽  
M. Stevenson
Keyword(s):  
High Frequency ◽  
Bandwidth Efficiency ◽  
Acoustic Communications ◽  
High Bandwidth

scholarly journals High bandwidth-efficiency resonant cavity enhanced Schottky photodiodes for 800–850 nm wavelength operation

1998 ◽  
Vol 72 (21) ◽  
pp. 2727-2729 ◽  
Author(s):  
M. S. Ünlü ◽  
M. Gökkavas ◽  
B. M. Onat ◽  
E. Ata ◽  
E. Özbay ◽  
...  
Keyword(s):  
Resonant Cavity ◽  
Bandwidth Efficiency ◽  
High Bandwidth

Hipernetch: High-Performance FPGA Network Switch

2022 ◽  
Vol 15 (1) ◽  
pp. 1-31
Author(s):  
Philippos Papaphilippou ◽  
Jiuxi Meng ◽  
Nadeen Gebara ◽  
Wayne Luk
Keyword(s):  
High Frequency ◽  
High Performance ◽  
Data Centers ◽  
Round Robin ◽  
Switching Performance ◽  
Wide Range ◽  
Crossbar Switches ◽  
High Bandwidth ◽  
Network Switch ◽  
Network Switches

We present Hipernetch, a novel FPGA-based design for performing high-bandwidth network switching. FPGAs have recently become more popular in data centers due to their promising capabilities for a wide range of applications. With the recent surge in transceiver bandwidth, they could further benefit the implementation and refinement of network switches used in data centers. Hipernetch replaces the crossbar with a “combined parallel round-robin arbiter”. Unlike a crossbar, the combined parallel round-robin arbiter is easy to pipeline, and does not require centralised iterative scheduling algorithms that try to fit too many steps in a single or a few FPGA cycles. The result is a network switch implementation on FPGAs operating at a high frequency and with a low port-to-port latency. Our proposed Hipernetch architecture additionally provides a competitive switching performance approaching output-queued crossbar switches. Our implemented Hipernetch designs exhibit a throughput that exceeds 100 Gbps per port for switches of up to 16 ports, reaching an aggregate throughput of around 1.7 Tbps.

Integration of a K-Band Receiver Front-End Using a Copper Core Printed Circuit Board

2018 ◽  
Vol 2018 (1) ◽  
pp. 000384-000388
Author(s):  
Brian Curran ◽  
Jacob Reyes ◽  
Christian Tschoban ◽  
Ivan Ndip ◽  
Klaus-Dieter Lang ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Antenna Arrays ◽  
High Frequency ◽  
Printed Circuit Board ◽  
Cost Effective ◽  
Circuit Board ◽  
Front End ◽  
High Bandwidth ◽  
Increasing Demand ◽  
K Band

Abstract Increasing demand for high bandwidth wireless satellite connections and telecommunications has resulted in interest in steerable antenna arrays in the GHz frequency range. These applications require cost-effective integration technologies for high frequency and high power integrated circuits (ICs) using GaAs, for example. In this paper, an integration platform is proposed, that enables GaAs ICs to be directly placed on a copper core inside cavities of a high frequency laminate for optimal cooling purposes. The platform is used to integrate a K-Band receiver front-end, composed of four GaAs ICs, with linear IF output power for input powers above −40dBm and a temperature of 42°C during operation.

Research on High Bandwidth Rogowski Coil for Measuring Lightning Traveling Wave Current on Double Circuit Transmission Line

2014 ◽  
Vol 986-987 ◽  
pp. 1558-1564
Author(s):  
Cheng Ju Yang ◽  
Cheng Wei Zhang ◽  
Geng Bin Zhang ◽  
Pei Ling Chen ◽  
Shi Jun Xie
Keyword(s):  
Transmission Line ◽  
Traveling Wave ◽  
High Frequency ◽  
Power Grid ◽  
Low Frequency ◽  
Rogowski Coil ◽  
The Self ◽  
Equivalent Model ◽  
High Bandwidth ◽  
Frequency Components

Double circuit transmission line is an important part of the power grid, which is vulnerable to lightning and may endanger the security and stability of the power grid. In order to design a sensor which can monitor the lightning traveling wave current on double circuit transmission line, simulations of lightning on the double circuit transmission line were conducted. The simulation result shows that besides high frequency components, the traveling wave contains a lot of low frequency components. Based on the equivalent model and the frequency response of the self-integrated Rogowski coil, it turns out that the widely used self-integrated Rogowski coil is not suitable for this application as the problem of low frequency distortion. In this paper, through theoretical analysis and simulations in Matlab, an improved Rogowski coil with analog integrator is proposed which can correct the low frequency distortion of the self-integrated Rogowski coil. All the simulations, experiments and operating data installed to a double circuit transmission line in China verify the validity of the high bandwidth Rogowski coil.

Sign in / Sign up

Export Citation Format

Share Document