The Experts below are selected from a list of 4713 Experts worldwide ranked by ideXlab platform

Ivan S. Muslin - One of the best experts on this subject based on the ideXlab platform.

Syed Azhar Hasan - One of the best experts on this subject based on the ideXlab platform.

  • Design & Measurement techniques for innovative, high performance, circularly polarized, ultra wideband corrugated horn antenna with septum polarizer for space applications
    2011 IEEE International Conference on Microwave Technology & Computational Electromagnetics, 2011
    Co-Authors: Syed Azhar Hasan
    Abstract:

    This paper discusses Design & Measurement techniques for innovative, high performance, circularly polarized, ultra wideband corrugated horn antenna with septum polarizer having high gain & extremely low side lobes for space applications. An innovative technique of feeding with septum polarizer has been utilized to make the corrugated horn antenna circularly polarized. Excellent axial ratio of 1.9 dB has been achieved at center frequency which ensures circular polarization as required by space standards of axial ratio

  • Highly reliable & wideband digital multi beamforming horn array antenna with gain adjustment capabilities for space applications
    2011 China-Japan Joint Microwave Conference, 2011
    Co-Authors: Syed Azhar Hasan
    Abstract:

    This paper discusses Design & Measurement techniques for highly reliable & wideband Digital Multi beamforming Horn Array Antenna with gain adjustment capabilities for Space Applications. Complexity of feeding network has been reduced by many folds with the use of 24 dual coaxial fed circularly polarized conical horn antennas providing an excellent axial ratio of

  • Design & Measurement techniques for Dual Polarized Novel Printed Crossed Slot Dipole Antenna for Remote Sensing Applications
    Proceedings of the 9th International Symposium on Antennas Propagation and EM Theory, 2010
    Co-Authors: Syed Azhar Hasan
    Abstract:

    This paper discusses the Design & Measurement techniques for Dual Polarized Novel Printed Crossed Slot Dipole Antenna for Remote Sensing Applications. An innovative dual polarized antenna has been Designed which consists both polarizations i.e. linear & circular polarization achieved through two independent electronic phase shifters providing phase shifts of 0° & 90° at both inputs for circular polarization & phase shifts of 0° & 0° at both inputs for linear polarization, however equal power at both inputs is provided through Wilkinson power divider. Antenna has wide beamwidth characteristics of 100° for providing global coverage required for remote sensing application. Due to wide coverage of the antenna the link can be easily established regardless of the position of the satellite. Peak Circularly polarized gain of 6.85 dB has been achieved through excitation of both feeding ports & linearly polarized gain of 7.35 dB has been achieved with excitation of both ports. This novel Design overcomes the limitation of normal patch antenna configurations which provide only one type of polarization in one Design by providing both polarizations in one Design. Printed Slot crossed dipole antenna provides bandwidth of 200MHz which is sufficient for our application. Absolute gain Measurement techniques have been employed for the Measurement of antenna gain. Simulation & Optimization for this novel antenna has been done on Ansoft HFSS v11.

Herman Aguinis - One of the best experts on this subject based on the ideXlab platform.

Raj Jain - One of the best experts on this subject based on the ideXlab platform.

  • The art of computer systems performance analysis - techniques for experimental Design, Measurement, simulation, and modeling.
    Performance Evaluation, 1991
    Co-Authors: Raj Jain
    Abstract:

    This book is intended to be a comprehensive textbook for the computer professionals who Design, procure, or use computer systems. These professionals may be proficient in their own field (Design, procurement, application, and soforth) while knowing little about queueing theory, statistics, experimentalDesign, or workload characterization. Performance analysis is a key step in the Design and procurement of new computer systems including processors, languages, operating systems, networking architectures, or database systems. In all cases, it is necessary to compare performance of new computer systems with that of similar systems. This book provides these professionals with performance analysis techniques that are simple and straightforward and require a minimal level of statistical sophistication.A computer systems performance analyst must understand computer systems as well as various analysis techniques such as statistics, probability theory, experimental Design, simulation, and queueing theory. The purpose of this bookis to give basic modeling, simulation, and analysis background to systems analysts so that they are able to understand performance terminology, correctly Design performance experiments, use simple queueing or simulation models, and interpret results. Often performance analysts are of two basic types: those who can measure but cannot model and those who can model but cannot measure. In practice, one needs to use both Measurement as well as modeling techniques to solve performance problems. This book stresses both aspects of the field. There are many books on computer systems performance. These books discuss only one or two aspects of performance analysis, with a majority of the books being queueing theoretic. Queueing theory is admittedly a helpful tool, but the knowledge of simulation, Measurement techniques, data analysis, and experimentalDesign is invaluable. I wrote this book because there is no book available thatemphasizes and integrates all these aspects of performance analysis.Experimental Design techniques that help reduce analysis costs are currently atotally neglected area in performance analysis books. As a performance analystwith several Design teams at Digital Equipment Corporation and as an instructorof a course on performance analysis at Massachusetts Institute of Technology, Ihave been involved in the performance analysis of a wide variety of computersystems and subsystems. This book is a compendium of the techniques that wereused in these an…

  • the art of computer systems performance analysis techniques for experimental Design Measurement simulation and modeling
    1991
    Co-Authors: Raj Jain
    Abstract:

    Partial table of contents: AN OVERVIEW OF PERFORMANCE EVALUATION. Common Mistakes and How to Avoid Them. Selection of Techniques and Metrics. Measurement TECHNIQUES AND TOOLS. Types of Workloads. Workload Characterization Techniques. Monitors. Ratio Games. PROBABILITY THEORY AND STATISTICS. Summarizing Measured Data. Simple Linear Regression Models. Other Regression Models. EXPERIMENTAL Design AND ANALYSIS. One-Factor Experiments. Two-Factor Full Factorial Design without Replications. Two-Factor Full Factorial Design with Replications. SIMULATION. Analysis of Simulation Results. Testing Random-Number Generators. Commonly Used Distributions. QUEUEING MODELS. Analysis of a Single Queue. Operational Laws. Convolution Algorithm. Appendix. Solutions to Selected Exercises. References. Author Index. Subject Index.

Maurice W. Long Long - One of the best experts on this subject based on the ideXlab platform.

  • Antennas: Fundamentals, Design, Measurement
    2020
    Co-Authors: Lamont V. Blake, Maurice W. Long Long
    Abstract:

    This is a professional level, introductory text on antenna principles, Design, analysis, and Measurements. It is especially suitable for persons who wish to improve their knowledge of antenna principles, concept Design, performance analyses, and Measurements. It is not a cookbook-like catalog for antenna Design, nor does its understanding require a familiarity with electromagnetic theory, sophisticated mathematics, or complex computer techniques. The 3rd Edition updates and expands the original text by Lamont Blake, which was prepared at the undergraduate engineering, science, or technology level. For providing technical depth at the senior and graduate university levels, additions to the original book include a greatly expanded Chapter 7 on Antennas with Special Properties, a brand new Chapter 8 on Electronically Steered Arrays, and a revised Chapter 9 on Measurements. Also new to this edition are numerous appendices to the updated text and a CD-ROM with sample computer analyses. Reader knowledge assumes familiarity with basic college physics and mathematics. Computer computations use Mathcad® software, which can be read and used by persons without prior computer programming knowledge. The book is therefore suitable for entry-level as well as the more experienced professionals who desire to expand their understanding of and capabilities for antenna principles, analyses, Measurements, and Design.