A lifetime and power sensitive design optimization framework for a radio frequency circuit

2017 ◽  
Author(s):  
Kexin Yang ◽  
Taizhi Liu ◽  
Rui Zhang ◽  
Linda Milor
Keyword(s):  
Radio Frequency ◽  
Design Optimization ◽  
Optimization Framework ◽  
Radio Frequency Circuit

scholarly journals High Bandwidth Resonant Radio Frequency Circuit for Lipid Bilayer Detection

2012 ◽  
Vol 102 (3) ◽  
pp. 181a
Author(s):  
Abhishek Bhat ◽  
Jonathan Rodriguez ◽  
Hua Qin ◽  
Hyun Cheol Shin ◽  
Hyuncheol Shin ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Lipid Bilayer ◽  
High Bandwidth ◽  
Radio Frequency Circuit

scholarly journals GENERATION OF LIGHT THROUGH PLASMA USING RADIO FREQUENCY SOURCE IN DISUSED FLUORESCENT TUBE

2018 ◽  
Vol 6 (2) ◽  
pp. 130-145
Author(s):  
Adekanmbi M ◽  
Abumere E.O ◽  
Amusan J.A
Keyword(s):  
Radio Frequency ◽  
Ground State ◽  
Mercury Vapor ◽  
Ionized Gas ◽  
Frequency Signal ◽  
Sufficient Energy ◽  
Frequency Source ◽  
Change State ◽  
Radio Frequency Circuit ◽  
Fluorescent Tube

Light has been generated through Plasma using radio frequency source in 4Ft 40W disused fluorescent tube. As against the thermionic and incandescence source of running a fluorescent tube which is actually difficult to get started due to the resistance of the gases enclosed inside, a Radio Frequency signal of 30MHz  generated using a designed Hartley Oscillator is employed. The power of the signal generated is amplified from 231mW to 197.8W using a modeled inverter. The coupled Hartley oscillator and the inverter form an ionizing circuit. The gases inside fluorescent tube consist of mercury Vapor, argon, krypton or Neon. When sufficient energy is supplied to these gases, by the ionizing circuit, ionization and excitation takes place which makes otherwise neutral gases, to change state to a cloud of ionized gas called Plasma. When excited electrons in the gases return to the ground state they lose energy in packets called Photon. This Photon is ultraviolet light which is not visible to the human eye but when it strikes the walls of the tube coated with Phosphor it glows whereby light is generated. The high electric field Radio frequency circuit designed has generated light in a fluorescent tube without the use of starter and ballast. It has also generated light in otherwise “dead” or disused fluorescent bulbs.

Design Optimization of Radio Frequency Discrete Tuning Varactors

2009 ◽  
pp. 343-352
Author(s):  
Luís Mendes ◽  
Eduardo J. Solteiro Pires ◽  
Paulo B. de Moura Oliveira ◽  
José A. Tenreiro Machado ◽  
Nuno M. Fonseca Ferreira ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Design Optimization

scholarly journals Multidisciplinary Design Optimization Framework with Coupled Derivative Computation for Hybrid Aircraft

2020 ◽  
Vol 57 (4) ◽  
pp. 715-729 ◽  
Author(s):  
Alessandro Sgueglia ◽  
Peter Schmollgruber ◽  
Nathalie Bartoli ◽  
Emmanuel Benard ◽  
Joseph Morlier ◽  
...  
Keyword(s):  
Design Optimization ◽  
Multidisciplinary Design Optimization ◽  
Multidisciplinary Design ◽  
Optimization Framework

Testing Design Optimization for Uncertainty Reduction in Generating Off-Road Mobility Map Using a Bayesian Approach

2019 ◽  
Vol 142 (2) ◽  
Author(s):  
Zhen Hu ◽  
Zissimos P. Mourelatos ◽  
David Gorsich ◽  
Paramsothy Jayakumar ◽  
Monica Majcher
Keyword(s):  
Design Optimization ◽  
Epistemic Uncertainty ◽  
Uncertainty Reduction ◽  
Soil Conditions ◽  
Mobility Prediction ◽  
Soil Maps ◽  
Optimization Framework ◽  
Uncertainty Sources ◽  
Vehicle Mobility ◽  
Testing Design

Abstract The Next Generation NATO Reference Mobility Model (NG-NRMM) plays a vital role in vehicle mobility prediction and mission planning. The complicated vehicle–terrain interactions and the presence of heterogeneous uncertainty sources in the modeling and simulation (M&S) result in epistemic uncertainty/errors in the vehicle mobility prediction for given terrain and soil conditions. In this paper, the uncertainty sources that cause the uncertainty in mobility prediction are first partitioned into two levels, namely uncertainty in the M&S and uncertainty in terrain and soil maps. With a focus on the epistemic uncertainty in the M&S, this paper presents a testing design optimization framework to effectively reduce the uncertainty in the M&S and thus increase the confidence in generating off-road mobility maps. A Bayesian updating approach is developed to reduce the epistemic uncertainty/errors in the M&S using mobility testing data collected under controllable terrain and soil conditions. The updated models are then employed to generate the off-road mobility maps for any given terrain and soil maps. Two types of design strategies, namely testing design for model selection and testing design for uncertainty reduction, are investigated in the testing design framework to maximize the information gain subject to limited resources. Results of a numerical example demonstrate the effectiveness of the proposed mobility testing design optimization framework.

Network Redundancy: A Key Design Factor for Cooling Networks

2020 ◽  
Author(s):  
Reza Pejman ◽  
Ahmad Raeisi Najafi
Keyword(s):  
Shape Optimization ◽  
Design Optimization ◽  
Cooling Efficiency ◽  
Temperature Uniformity ◽  
Optimization Scheme ◽  
Design Factor ◽  
Numerical Examples ◽  
Optimization Framework ◽  
Hybrid Topology ◽  
Operating Constraints

Abstract Microvascular composite offers a variety of multi-functionality based on the choice of fluid flowing through the embedded microchannels. The design of the microchannel network in microvascular composites is quite challenging. Indeed, the design is often expected to have high cooling efficiency, satisfy the manufacturing and operating constraints, and also have redundancy to increase the temperature uniformity and alleviate the destructive effects of potential microchannel blockage. In this study, we present a design optimization framework to satisfy these requirements. We use the Hybrid Topology/Shape (HyTopS) optimization scheme to design a redundant blockage-tolerant cooling network. In this method, the optimizer can change the topology of the design during the shape optimization process. Being able to modify the topology of the network enables the optimizer to provide network redundancy to effectively optimize the design for blockage tolerance. We also solve several numerical examples to show the unique features of the proposed method.

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