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Full-Text Articles in Engineering
Injection-Locking In Fabry-Perot Quantum-Well Lasers, Xiaomin Jin, Shun-Lien Chuang
Injection-Locking In Fabry-Perot Quantum-Well Lasers, Xiaomin Jin, Shun-Lien Chuang
Electrical Engineering
No abstract provided.
Measurement Sensitivity And Accuracy Verification For An Antenna Measurement System, Newlyn Hui, Aloysius Aragon Lubiano, Christopher R. Brito, Dean Arakaki
Measurement Sensitivity And Accuracy Verification For An Antenna Measurement System, Newlyn Hui, Aloysius Aragon Lubiano, Christopher R. Brito, Dean Arakaki
Electrical Engineering
An antenna measurement system was developed to complement a new rectangular anechoic chamber (20’L x 10’W x 9’7”H) that has been established at California Polytechnic State University (Cal Poly) through donations and financial support from industry and Cal Poly departments and programs. Software algorithms were written to provide four data acquisition methods: continual sweep and step mode for both single and multiple frequencies. Log magnitude and phase information for an antenna under test is captured over a user-specified angular position range and the antenna's radiation pattern is obtained after post processing. Pattern comparisons against theoretical predictions are performed. Finally an …
Conducted Emissions Testing For Electromagnetic Compatibility, Maximilian Moy, Dean Arakaki
Conducted Emissions Testing For Electromagnetic Compatibility, Maximilian Moy, Dean Arakaki
Electrical Engineering
Operating frequencies in the gigahertz range is creating an increased need for electromagnetic compatibility (EMC) testing. In the United States, FCC regulations require conformance to radiated and conducted emissions specifications. An EMC laboratory was established at Cal Poly San Luis Obispo (screen room, test instrumentation, and software) and an experiment was developed to explore conducted emissions effects. This paper will describe the test configuration, explain the calibration procedure needed to acquire accurate measurements, and illustrate measurement techniques applied to two example systems. In addition, the data collection process is illustrated through software donated by CKC Laboratories (EMC specialists). To verify …
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Executive Summary, Andrew Lee, Art Maccarley
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Executive Summary, Andrew Lee, Art Maccarley
Electrical Engineering
No abstract provided.
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Evaluation Of Traffic Safety Influence Based On Historical Collision Data, Andrew Lee, Art Maccarley
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Evaluation Of Traffic Safety Influence Based On Historical Collision Data, Andrew Lee, Art Maccarley
Electrical Engineering
No abstract provided.
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Final Project Report, Andrew Lee, Art Maccarley
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Final Project Report, Andrew Lee, Art Maccarley
Electrical Engineering
No abstract provided.
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Analysis Of Driver Response To Caws Warning Messages, Andrew Lee, Art Maccarley
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Analysis Of Driver Response To Caws Warning Messages, Andrew Lee, Art Maccarley
Electrical Engineering
No abstract provided.
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Technical Deliverables, Andrew Lee, Art Maccarley
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Technical Deliverables, Andrew Lee, Art Maccarley
Electrical Engineering
No abstract provided.
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Technical And Operational Assessment, Andrew Lee, Art Maccarley
Instrumentation And Evaluation Of District 10 Caltrans Automated Warning System (Caws): Technical And Operational Assessment, Andrew Lee, Art Maccarley
Electrical Engineering
No abstract provided.
An Integrated Model For Signalized Traffic Intersection Control, Xiao-Hua Yu
An Integrated Model For Signalized Traffic Intersection Control, Xiao-Hua Yu
Electrical Engineering
Traffic signal control is an effective way to regulate traffic flow to avoid conflict and reduce congestions. This research investigates a real-time traffic signal control system that integrates a traffic flow prediction model and an adaptive control scheme based on dynamic programming with rolling horizon. The proposed approach estimates the parameter of the arriving traffic flow at the intersection, predicts the state transition probabilities, and then formulates the traffic signal control problem as a decision-making problem of a stochastic system. Two different traffic arrival patterns are considered, including the normal distribution and the Poission distribution.
A Senior Level Polymer Electronics Course: Unique Instruction Or Just Low Cost?, David Braun
A Senior Level Polymer Electronics Course: Unique Instruction Or Just Low Cost?, David Braun
Electrical Engineering
After progressing from research laboratories to factories to the market, semiconducting polymers now appear in commercial products and offer educational opportunities. Semiconducting polymers are excellent materials with which to teach semiconductor device fabrication principles, device testing, optical and electronic properties, polymer synthesis, polymer film preparation, and structure-property relationships. Previous publications have emphasized multidisciplinary course modules based on semiconducting polymers.1 This work emphasizes how the use of semiconducting polymers in an undergraduate polymer electronics course benefits electrical engineering and computer engineering students.
System And Method For Differential Data Collection, Jack P. Glas, Vladimir I. Prodanov
System And Method For Differential Data Collection, Jack P. Glas, Vladimir I. Prodanov
Electrical Engineering
The present invention is directed towards a data detector for deriving a data signal from an incoming radio frequency input. The data detector comprises a delay logic which receives an unfiltered signal in quadrature and in-phase components, and applies a delay to each of the in-phase and quadrature phase components of the unfiltered input signal. The detector further comprises a first multiplication logic that multiplies the delayed in-phase component of the unfiltered signal by the quadrature phase component of the unfiltered signal to obtain a first result, and a second multiplication logic that multiplies the delayed quadrature phase component of …
Visible Light Emitting Diodes Fabricated From Soluble Semiconducting Polymers, Alan J. Heeger, David Braun
Visible Light Emitting Diodes Fabricated From Soluble Semiconducting Polymers, Alan J. Heeger, David Braun
Electrical Engineering
Visible light LEDs are produced having a layer of conjugated polymer which is cast directly from solution or formed as a gel-processed admixture with a carrier polymer. The LEDs can be formed so as to emit polarized light.
Chromatic Dispersion Of Thin Film Filters, R. M. Fortenberry, M. A. Scobey, Dennis J. Derickson, L. F. Stokes, P. C. Egerton
Chromatic Dispersion Of Thin Film Filters, R. M. Fortenberry, M. A. Scobey, Dennis J. Derickson, L. F. Stokes, P. C. Egerton
Electrical Engineering
This paper discusses the chromatic dispersion effects of thin film filters used in telecommunications systems. ITU channel, banded architecture, and low dispersion filter results are presented. Design techniques to improve and manage chromatic dispersion in practical network implementations are discussed.
Synchroscalar: Initial Lessons In Power-Aware Design Of A Tile-Based Embedded Architecture, John Y. Oliver, Ravishankar Rao, Paul Sultana, Jedidiah Crandall, Erik Czernikowski, Leslie W. Jones, Iv, Dean Copsey, Diana Keen, Venkatesh Akella, Frederic T. Chong
Synchroscalar: Initial Lessons In Power-Aware Design Of A Tile-Based Embedded Architecture, John Y. Oliver, Ravishankar Rao, Paul Sultana, Jedidiah Crandall, Erik Czernikowski, Leslie W. Jones, Iv, Dean Copsey, Diana Keen, Venkatesh Akella, Frederic T. Chong
Electrical Engineering
Embedded devices have hard performance targets and severe power and area constraints that depart significantly from our design intuitions derived from general-purpose microprocessor design. This paper describes our initial experiences in designing Synchroscalar, a tile-based embedded architecture targeted for multi-rate signal processing applications. We present a preliminary design of the Synchroscalar architecture and some design space exploration in the context of important signal processing kernels. In particular, we find that synchronous design and substantial global interconnect are desirable in the low-frequency, low-power domain. This global interconnect enables parallelization and reduces processor idle time, which are critical to energy efficient implementations …
Anaheim Advanced Traffic Control System Field Operational Test: Technical Evaluation Of Scoot, James E. Moore Ii, C. Arthur Maccarley, Stephen Mattingly, Michael G. Mcnally
Anaheim Advanced Traffic Control System Field Operational Test: Technical Evaluation Of Scoot, James E. Moore Ii, C. Arthur Maccarley, Stephen Mattingly, Michael G. Mcnally
Electrical Engineering
This article provides a technical evaluation of the traffic control element of the Anaheim Advanced Traffic Control System Field Operations Test (FOT), sponsored by the US Department of Transportation. The primary objective for this test was the evaluation of adaptive traffic signal control technologies, including the Split Cycle and Offset Optimization Technique (SCOOT) for intersection signal control. The SCOOT evaluation was defined relative to existing, first generation Urban Traffic Control System (UTCS)-based control using standard US field detectorization. This US geometry is not the detector configuration normally used with SCOOT. SCOOT was implemented with some degree of success, though technical …