Design development and experimental validation of an EBG matrix antenna for tracking application

2015 ◽  
Vol 9 (1) ◽  
pp. 231-239 ◽  
Author(s):  
Hussein Abou Taam ◽  
Georges Zakka El Nashef ◽  
Eric Arnaud ◽  
Nicolas Chevalier ◽  
Bertrand Lenoir ◽  
...  
Keyword(s):  
Mutual Coupling ◽  
Experimental Validation ◽  
Beam Steering ◽  
Theoretical Aspect ◽  
High Gain ◽  
Beam Forming ◽  
Design Development ◽  
Surface Approach ◽  
International Patent ◽  
The Subject

Today's increase of functions, improvement of performances, and cost reductions required on an agile electronically scanned antenna, drive researchers to develop an innovative antennas’ concept in order to deal with the proposed challenge. In this context, this article describes and demonstrates an experimental prototype to show the reliability and efficiency of the electromagnetic band gap(EBG)matrix antenna theoretical aspect, for beam forming and beam steering applications. The originality of this work is the antenna itself which constitutes the subject of an accepted national and international patent. In fact, the proposed antenna is based on the equivalent radiating surface approach and used special EBG antennas called “pixels” to overcome some of the array approach defects. The antenna has demonstrated different electromagnetic behaviors, such as low mutual coupling, high gain preservation for high scanning angles values, etc.

scholarly journals Scan Performance and Reconfigurability of Agile Radiating Matrix Antenna Prototype

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
H. Abou Taam ◽  
G. Zakka El Nashef ◽  
M. Salah Toubet ◽  
E. Arnaud ◽  
B. Jecko ◽  
...  
Keyword(s):  
Mutual Coupling ◽  
Beam Steering ◽  
Theoretical Aspect ◽  
High Gain ◽  
Beam Forming ◽  
Surface Approach ◽  
Electromagnetic Band Gap ◽  
Working Principle ◽  
Experimental Validations ◽  
Novel Concept

This paper is dedicated to different experimental validations concerning a novel concept of beam forming and beam steering antenna. The working principle of the antenna is based on the equivalent radiating surface approach and inspired from an electromagnetic band gap antenna. The theoretical aspect and some numerical validations have been already published in the work of Abou Taam et al. (2014). Different electromagnetic behaviors have been demonstrated, such as low mutual coupling, and high gain preservation for high scanning angles values. In this paper, some of these electromagnetic behaviors will be proven experimentally by the means of two different feeding configurations.

scholarly journals High-Gain Textile Antenna Array System for Off-Body Communication

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Maria Lucia Scarpello ◽  
Luigi Vallozzi ◽  
Hendrik Rogier ◽  
Dries Vande Ginste
Keyword(s):  
Antenna Array ◽  
Mutual Coupling ◽  
Low Cost ◽  
Beam Steering ◽  
High Gain ◽  
Antenna System ◽  
Fully Integrated ◽  
Textile Antenna ◽  
Coupling Characteristics ◽  
The Stability

A novel high-gain textile antenna array system, fully integrated into a rescue-worker’s vest and operating in the Industrial, Scientific, and Medical wireless band (2.4–2.4835 GHz), is presented. The system comprises an array consisting of four tip-truncated equilateral triangular microstrip patch antennas (ETMPAs), a power divider, line stretchers, and coaxial cables. The array is vertically positioned on the human torso to produce a narrow beam in elevation, as such reducing fading and allowing to steer the maximum gain in a small angular sector centered around the broadside direction. To allow simple low-cost beam steering, we specifically minimize mutual coupling by using a relative large distance between the patches and by selecting the ETMPA element as the most suited topology from three potential patch geometries. Moreover, we investigate the stability of return loss and mutual coupling characteristics under different relative humidity conditions, when bending the array, when placing the system on-body, and when covering it by different textile layers. Reflection coefficient and gain patterns are simulated and measured for the antenna system in free space and placed on the human body.

Development of SETS E-Module Integrated with POE Model for Science Learning

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Insih Wilujeng ◽  
Tri Suci Yolanda Putri
Keyword(s):  
Junior High School ◽  
Science Learning ◽  
Design Development ◽  
Feasibility Assessment ◽  
Teachers And Students ◽  
Assessment Sheet ◽  
The Subject ◽  
Analysis Design ◽  
Addie Model ◽  
Readability Assessment

This research developed Science, Environment, Technology, Society (SETS) e-module integrated with predict, observe, explain (POE) model on the subject matter of Earth Layer and Its Dynamics for grade VII students. This study aimed to reveal i) the feasibility of the developed e-module for grade VII students, and ii) the practicality of the developed e-module and its dynamics. This is a developmental research adopting the ADDIE model consisting of five stages, i.e.: analysis, design, development, implementation, and evaluation. The subject of the limited test consisted of 15 students of grade VIII.G of Public Junior High School 8 Yogyakarta. The data were collected using a product feasibility assessment sheet for material and media experts, a product practicality assessment sheet for teachers, and a product readability assessment sheet for students. The results show that the developed e-module was feasible to be used according to the material and media experts and the developed e-module is practical according to teachers and students.

A flat, broadband and high gain beam-steering antenna for 5G communication

2017 ◽  
Author(s):  
M. Kamran Khattak ◽  
M. Salman Khattak ◽  
A. Rehman ◽  
C. Lee ◽  
D. Han ◽  
...  
Keyword(s):  
Beam Steering ◽  
High Gain ◽  
5G Communication

scholarly journals Pengembangan Kartu Domano (Domino Matematika Trigono) Sebagai Media Pembelajaran Pada Matakuliah Trigonometri

2019 ◽  
Vol 9 (1) ◽  
pp. 62-75 ◽  
Author(s):  
Kristian Tantra Sidarta ◽  
Tri Nova Hasti Yunianta
Keyword(s):  
Learning Styles ◽  
Mean Value ◽  
Design Development ◽  
Christian University ◽  
Paired Samples ◽  
Questions And Answers ◽  
The Subject ◽  
Addie Model ◽  
Self Learning ◽  
Research Type

This research aims is to develop a learning media called Domano Card, that is an abbreviation  from Trigono mathematics Dominoes. This media is expected to be valid, effective, and practical to be used as a learning tool for Trigonometry Courses in the college. It is consists of three sets of Domano cards, game boards, and game rules. This Domano Card contains of the pairs of questions and answers. This research type is Research Development (R&D) with ADDIE model (Analyze, Design, Development, Implementation, Evaluate). The subject of this research is 64 active students of Mathematics Education, Satya Wacana Christian University in Trigonometry course. Domano cards are developed based on the students’ learning styles. Validity test was done by 2 validators, there are media experts and material experts It has obtained media feasibility result of 98.71% with very decent category and the result of material feasibility of 92.5% with very decent category. The effectiveness test was done by Paired Samples t-test with SPSS 17. It is indicated that there is a significant differences after the use of Domano Card with the mean value improvement from 57 to 73. The respondents of practicality test are lecturer of Trigonometry course and the lecturer assistant class that obtained 89% with very good category. Based on this development research, it can be concluded that Domano Card media is valid, effective, and practical use as a means of self-learning exercises for students in Trigonometry courses.

scholarly journals Digitalization and Artificial Intelligence in Migration and Mobility: Transnational Implications of the COVID-19 Pandemic

Societies ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 135
Author(s):  
Marie McAuliffe ◽  
Jenna Blower ◽  
Ana Beduschi
Keyword(s):  
Artificial Intelligence ◽  
Human Rights ◽  
International Development ◽  
Digital Technology ◽  
Design Development ◽  
Systemic Risks ◽  
Challenges And Opportunities ◽  
The Subject ◽  
And Migration ◽  
Migration Systems

Digitalization and artificial intelligence (AI) technologies in migration and mobility have incrementally expanded over recent years. Iterative approaches to AI deployment experienced a surge during 2020 and into 2021, largely due to COVID-19 forcing greater reliance on advanced digital technology to monitor, inform and respond to the pandemic. This paper critically examines the implications of intensifying digitalization and AI for migration and mobility systems for a post-COVID transnational context. First, it situates digitalization and AI in migration by analyzing its uptake throughout the Migration Cycle. Second, the article evaluates the current challenges and, opportunities to migrants and migration systems brought about by deepening digitalization due to COVID-19, finding that while these expanding technologies can bolster human rights and support international development, potential gains can and are being eroded because of design, development and implementation aspects. Through a critical review of available literature on the subject, this paper argues that recent changes brought about by COVID-19 highlight that computational advances need to incorporate human rights throughout design and development stages, extending well beyond technical feasibility. This also extends beyond tech company references to inclusivity and transparency and requires analysis of systemic risks to migration and mobility regimes arising from advances in AI and related technologies.

scholarly journals Development of PowToon-Based Physics Learning Media on Atomic Nucleus Materials for Class XII Senior High School

2021 ◽  
Vol 9 (1) ◽  
pp. 43
Author(s):  
M Nor ◽  
Mitri Irianti ◽  
Suci Dilla Melani
Keyword(s):  
High School ◽  
High School Students ◽  
Atomic Nucleus ◽  
Development Stage ◽  
Ease Of Use ◽  
Design Development ◽  
School Students ◽  
Physics Learning ◽  
The Subject ◽  
Addie Model

Online service in the form of the Powtoon application can be used to develop physics learning media with presentations that have very interesting animation features. The purpose of this research is to produce a learning media product in the form of a compact disk (CD) on the subject of the atomic nucleus in the learning process of class XII high school students. The research method uses Research and Development with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation) which is modified only to the development stage. Based on the results of the validation test on the content aspect obtained 90%, the design aspect 83%, the pedagogic aspect 87%, and the ease of use aspect 84%. The results of this research indicate that the learning media using the Powtoon application on the atomic nucleus material is declared valid. Thus the Powtoon application-based learning media is declared feasible to be used as a learning media on atomic nucleus material in class XII SMA.

scholarly journals Interactive Animation Based Learning Media on Starter System Materials for Vocational Students

2019 ◽  
Vol 25 (2) ◽  
pp. 187-193
Author(s):  
Arif Priambodo ◽  
Zainal Arifin
Keyword(s):  
Product Development ◽  
Development Model ◽  
Vocational Students ◽  
Research Model ◽  
Design Development ◽  
Interactive Animation ◽  
Electrical Vehicle ◽  
The Media ◽  
The Subject ◽  
Analysis Design

This study aimed at (1) developing interactive animated learning media on starter system materials for the subject of light electrical vehicle maintenance, (2) examining the effectiveness of developed media assessed from the aspects of display, program, and interactive based on students’ responses. The research model used was the development model of Analysis, Design, Development, Implementation, and Evaluation (ADDIE) developed by Branch. This study was conducted at SMK PGRI 4 Ngawi. Instruments used to obtain data were interviews and questionnaires. Product development was validated by material experts and media experts, then was tested in small (limited) and large trials (field). The results of this development study were as follows: (1) The analysis result of developed media showed that the media is feasible to be used in learning or in a good category. (2) The results of the assessment showed that the aspects of display, program and interactivity were all in the good category.

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