Antenna Design

In: Computers and Technology

Submitted By ramyakanna
Words 7933
Pages 32






Similar Documents


...some concept on aggression. Aggression is the emotions that everyone has to face in the daily life. No one likes to be in that emotion and that was the biggest challenge for us. From this we started thinking that how it can be brought into a positive level. So we decided that this would be an aggression releasing treatment for the stressed ones. A space is designed which induce aggression in a normal person and take that aggression into a hyper level and breaks it suddenly and makes an art piece in the end of the treatment. Basically it’s a passage painted with psychedelic design and there are four levels for it. On the first level it’s with checker board, which generally do not make much irritation on normal people, because people generally have a tendency that if they get into a weird place or situation they tend avoid going there. So we don’t want that to happen with space and it’s been design in such a way that after you cross one level the door closes and you cannot go back. The second level includes noisy floor, door closing with irritating sound, which again annoy you and when you enter the third level the difficulty increases again. There would be an arrangement of irregular steps, Illusion wall and floor, Illusion fans and lights. This would raise the aggression into an optimum level. The fourth level is the toughest one and it is the last one. This level contains irregular mirror and highly mind blowing psychedelic painting and also with annoying sound systems......

Words: 490 - Pages: 2


...Your neighbor is starting a small billing business and has asked you to design the network. Currently, you neighbor has nothing, but needs the following: - 2 workstations, 2 laptops, and 1 server supporting 3 users Go to website, Small Business section. Then select 2 workstation (PCs), 2 laptops, and one server. Pick all standard configurations; copy all information details including cost of each. Add the cost together and see if it less than $5,000 or not. If it was more than $5000, then change hardware components or pick lower end computers to lower the cost. You need to get total cost for these items no more than $3,000. - Wireless networking Do the same thing above but choose a wireless switch or routes that have at least 8 ports for expanding at later time. Include cost$$ PowerConnect 2808 Switch. >> Organizations seeking an 8-port switch that offers incredible value, flexible management capabilities and energy-efficient power savings. >> Dell Price $119.00 - 1 quality networked printer Dell V525w All-in-One Wireless Inkjet Printer: Versatile and efficient, this all-in-one printer provides enhanced high speed performance at a great value. Print, scan, fax, and copy with this efficient printer for your office - File and folder sharing Do this through Windows Server 2008 Standard Edition. Setup account, access and permission; create shared folder, etc./437 - Internet access Use Verizon for internet service. Get monthly fee estimate online. Buy a......

Words: 317 - Pages: 2

Equivalent Impedance of an Antenna

...of an Antenna Introduction: Antenna impedance is a measure of the resistance to an electrical signal in an antenna. Many factors have an impact on an antenna’s ability to transmit a signal, including the environment that the antenna is in and the design and composition of the antenna. Understanding antenna impedance is important when designing components that connect an antenna to a receiver or transmitter. The ratio to voltage current, which is equal to antenna impedance, is expressed in ohms. The antenna impedance represents the power that is absorbed by the antenna as well as the power that is dispersed by it as it comes into contact with electromagnetic waves. Voltage and Current Relationship: Antenna impedance relates the voltage to the current at the input to the antenna. Let us assume that the antenna has an impedance of 50 ohms. And if a sinusoidal voltage is applied at the antenna terminals with amplitude of 1 volt, then the current will have amplitude of I=VR=150=0.02 A. Since the impedance is a real number, the voltage is in phase with the current. Alternatively suppose the impedance is given by complex number say Z=50+j50 ohms. If Z=50+j50, then the impedance has the magnitude equal to: 502+502=70.71 The phase will be equal to: tan-1ImZReZ=45° This means the phase of the current will lag the voltage by 45°. That is the current waveform is delayed relative to the voltage waveform. To spell it out, if the voltage with frequency f at the antenna......

Words: 1383 - Pages: 6


...Material source: Teaching and Learning Online: Faculty Handbook;:University of Massachusetts ....Linking Learners Everywhere © 2013 All Rights Reserved Intro to Online Teaching and Learning What is Online Learning? Advantages of Learning Online Advantages of Teaching Online Challenges of Teaching Online Common Questions (FAQ) ....Linking Learners Everywhere © 2013 All Rights Reserved What is Online Learning? q Online instruction includes real-time (synchronous) and anytime, anywhere (asynchronous) interactions. Online learning is most effective when delivered by teachers experienced in their subject matter in a web-based environment Approaches to Online Learning - Sync (live) and Async Course Software - software tools and design layouts q q q ....Linking Learners Everywhere © 2013 All Rights Reserved Advantages of Learning Online q q Student-centered learning - draws individual learning styles Collaborative learning – active participants and coherent thinking Easy access to global resources - access online materials and resources (weblinks, e-libs) Experiential learning through multimedia presentations new technologies for engaging students Draws on students’ interest in online learning - recent studies show increased student interest in e-learning q q q ....Linking Learners Everywhere © 2013 All Rights Reserved Advantages of Teaching Online q Offer the opportunity to think about teaching in new ways learn new techniques......

Words: 1998 - Pages: 8


...Tropical Building Design Considerations 1. Naturally comfortable houses are low energy houses 2. Ceiling fans provide low energy cooling if you only use them whilst rooms are occupied 3. Light coloured roofs (or zinc alum) reflect the heat 4. Use orientation and shading to eliminate direct sun on walls 5. Minimise east and west wall areas and avoid windows on east and western walls to prevent low morning and afternoon sun heating up the house 6. Correctly sized eaves can provide permanent shade to north and south windows and walls (northern verandas make sense 7. Plant tall trees on the east and west sides of the house to shade walls 8. Tall trees on north and south shade roof (minimise mid-height foliage to let breeze through for naturally ventilated houses). Consider leaving half roof unshaded if solar panels are to be used Design for Natural Ventilation 1. Use the breeze for cross ventilation through openings in opposite walls and internal partitions 2. Maximise the area of windows (e.g. louvres) that can be opened 3. Orientate house to catch the breeze (whilst still minimising sun on east and west walls) 4. A long narrow floor plan catches the breeze best. 5. Trees and shrubs act to cool the air passing through the house. 6. Don't use exposed concrete on ground immediately outside the house as it heats the air. 7. Roof space ventilation draws the heat out. 8. Dirty flyscreens block more breeze. Consider......

Words: 569 - Pages: 3


...policy, current production operations, and identify new business models. This paper provides a background to better understand current trends in this multidisciplinary field that intersect with operations management, and the research opportunities and challenges it presents. # 2007 Elsevier B.V. All rights reserved. Keywords: Supply chain; Sustainability; By-products 1. Introduction The interaction between sustainability and supply chains is the critical next step from recent examinations of operations and the environment (Corbett and Kleindorfer, 2003) and operations and sustainability (Kleindorfer et al., 2005). While important contributions have been made in relation to environmental operations and policy, strategy, finance, product design, supplier relations and post-consumer product management it is critical to move forward to the systemic issues * Corresponding author. E-mail addresses: (J.D. Linton), (R. Klassen), (V. Jayaraman). 0272-6963/$ – see front matter # 2007 Elsevier B.V. All rights reserved. doi:10.1016/j.jom.2007.01.012 that exist at the intersection of sustainability, environmental management and supply chains. This paper gives consideration to both sustainability and supply chains. First, the relationship between these two concepts and previous work on environmental management of operations is considered. Second, new questions and research directions prompted by taking a sustainable......

Words: 4927 - Pages: 20


...influențe tradiționale - Proiect la Design şi estetica mărfurilor - Coordonator ştiinţific: Asist. univ. dr. Smaranda Giuşcă Studenţi: Florea Mihaela-Raluca Florian Maria Geangu Andreea Ghenea Dana-Roxana Grupa 940, Seria A, Anul III Bucureşti 2014 Cuprins Introducere Capitolul I: Prezentarea generală a produselor cu influențe tradiționale Capitolul II: Exemple reprezentative pentru design-ul cu influenţe tradiţionale 2.1 Ceasul Mora 2.2 Păpușa Matryoshka 2.3 Evantaiul 2.4 Ia românească Capitolul III: Ceasul suedez Mora pe piaţa românească Concluzii Bibliografie Introducere Motivul alegerii stilului tradițional derivă din dorința de a analiza impactul tradiției asupra fiecărei culturi și cum aceasta și-a creat propria cale către autenticitate. Astfel, în acest proiect, vom evidenția câteva dintre caracteristicile stilului cu influențe tradiționale, un stil care se remarcă prin diversitatea trăsăturilor în funcție de regiune, cultură, religie, așezare geografică și alți factori reprezentativi pentru o comunitate sau țară. De asemenea, vom prezenta câteva dintre caracteristicile stilulurilor tradiționale cu influențe suedeze, rusești, chinezești si românești, unele dintre cele mai importante, care și-au păstrat influențele tradiționale, fiind puternic conturate prin multitudinea de caracteristici, prin unicitatea lor și care sunt prezente și astăzi în societatea noastră. Design-ul cu specific......

Words: 3592 - Pages: 15


...Name Instructor Course Date Antennas This report provides details of different types of antennas used in ships as well as maintenance procedures and precaution measures when dealing with antennas. An Antenna is a component capable of radiating and capturing radio waves. Thus, antennas are useful elements of a ship and together with radio equipment are a means of communication between the vessel and the control tower. The first type of antenna used on ships is the quarter wave vertical antenna widely used at all frequencies from MF to VHF. The quarter wave vertical antenna is simple to construct and erect in locations with limited space like a ship. For VHF and UHF, it is important to elevate the antenna above close obstacles. One advantage is that, the single element vertical antennas have a multi-directional radiation design meaning they do not require re-alignment in a mobile application and are thus suitable for ships. A quarter wave aerial with a quarter-wave radials exhibits 50-ohms impedance thus uses a 50-ohm coaxial cable (Stutzman and Thiele). In summary, the quarter wave antenna is popular for its convenience and simplicity. The second type of antenna is the dipole antenna that is one of the commonly used RF antenna types. Primarily, it consists of two poles into which radio frequency current flows and together with a voltage causes radiation of a radio signal. There are several types of dipole antennas that include, half wave dipole, multi-half......

Words: 1149 - Pages: 5


...User Experience ©Jeff Patton Five topics today: User Experience explained simply and then: Users and modeling what you know about them Usability evaluating & testing it Visual Design guidelines to help visual design to communicate what you intend Emotional Design how do users feel about your software? 2 3 4 User Experience is Built From Dependent Layers Jesse James Garrett’s Elements of User Experience: 5 The Surface Layer Describes Finished Visual Design Aspects Surface Skeleton Structure Scope Strategy 6 The Skeleton Describes Screen Layout and Functional Compartments in the Screen Surface Skeleton Structure Scope Strategy 7 Structure Defines Navigation from Place to Place in the User Interface Surface Skeleton Structure Scope modal wizards task panes modal dialogs Strategy 8 The Places in the User Interface are Built to Support User Task-Centric Scope Surface Skeleton Structure Scope Strategy user tasks: • enter numbers • enter text • enter formulas • format cells • sort information • filter information • aggregate information • graph data • save data • import data • export data • print • ….. 9 Business Goals Drive User Constituencies and Contexts Supported To Form Strategy Surface Skeleton Structure Scope Strategy business goals: • displace competitive products • motivate sale of other integrated products • establish file format as default information sharing......

Words: 2870 - Pages: 12


...Chapter 4 Product Design Russell and Taylor Operations and Supply Chain Management, 8th Edition Lecture Outline • • • • • • • Design Process – Slide 4 Rapid Prototyping and Concurrent Design – Slide 11 Technology in Design – Slide 27 Design Quality Reviews – Slide 29 Design for Environment – Slide 33 Quality Function Deployment – Slide 36 Design for Robustness – Slide 45 © 2014 John Wiley & Sons, Inc. - Russell and Taylor 8e 4-2 Learning Objectives • Explain the importance of the product design process and provide an overview of each step of the process • Calculate the reliability and availability of a product or service • Understand the technologies involved in designing new products and their related production processes • Utilize techniques for analyzing design failures and eliminating unnecessary design features • Explain why and how each step of the product lifecycle can be changed for improved environmental stewardship, and provide examples of programs that support green efforts • Use quality function deployment as a design tool © 2014 John Wiley & Sons, Inc. - Russell and Taylor 8e 4-3 Design Process • Effective design can provide a competitive edge • matches product or service characteristics with customer requirements • ensures that customer requirements are met in the simplest and least costly manner • reduces time required to design a new product or service • minimizes revisions necessary to make a design workable © 2014 John Wiley...

Words: 2304 - Pages: 10


...Suliman AlSumairi Dr.Paul Sevensky COMM 598-01 Special Topics Assignment 1 – Analysis of Ad Campaign The Invenergy Campaign ads series convey important messages with basic design layout from my perspective. The photos, fonts, and colors failed to provide an effective example of alignment and proximity. However, it’s more likely hard to reveal the concept of the messages when you look at them for first time. Based on last discussion at the class, the relationships of elements of design to each other and to the total composition play an important role. They help to arrange and enhance the delivery of messages in effective compositions. For instance, Stronger Jessup ad failed to illustrate the relationship between the visual symbol and the text. They have not applied the alignment element, which needs a visual connection. As a result, ignoring any principle will make the design of the advertisement poor. Designing of visual documents and understanding of color importance helps when incorporating it into any design. The reason for the impact is that the colors have deep subliminal meanings that have massive impact on human attention. Choices regarding color should be matched with purpose of messages that try to deliver. Ads should have the colors in them perfectly matching. It is clearly shown in the advertisements. Whenever they run out of color meanings, they use blue and yellow. Color psychology dictates that the appropriate color enhance the environment. Green,......

Words: 896 - Pages: 4

Effective Reconfigurable Antenna Designs to Enhance Performance and Enable Wireless Powering

...Digital Commons FIU Electronic Theses and Dissertations University Graduate School 11-12-2009 Effective Reconfigurable Antenna Designs to Enhance Performance and Enable Wireless Powering Shishir S. Punjala Florida International University, Follow this and additional works at: Recommended Citation Punjala, Shishir S., "Effective Reconfigurable Antenna Designs to Enhance Performance and Enable Wireless Powering" (2009). FIU Electronic Theses and Dissertations. Paper 108. This work is brought to you for free and open access by the University Graduate School at FIU Digital Commons. It has been accepted for inclusion in FIU Electronic Theses and Dissertations by an authorized administrator of FIU Digital Commons. For more information, please contact FLORIDA INTERNATIONAL UNIVERSITY Miami, Florida EFFECTIVE RECONFIGURABLE ANTENNA DESIGNS TO ENHANCE PERFORMANCE AND ENABLE WIRELESS POWERING A dissertation submitted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY in ELECTRICAL ENGINEERING by Shishir Shanker Punjala 2009 To: Dean Amir Mirmiran College of Engineering and Computing This dissertation, written by Shishir Shanker Punjala, and entitled Effective Reconfigurable Antenna Designs to Enhance Performance and Enable Wireless Powering, having been approved in respect to style and intellectual......

Words: 890 - Pages: 4

Airframes and Flat Panel Antennas Match

... for which flat panel antennas (FPAs) have emerged as the most popular innovation in recent years. The limited speed and large size of mechanically-steered and the 1st generation of electronically-steered flat panel antennas drew many to wonder if the Holy Grail of the satellite world – a cost-competitive, electronically-steered flat panel antennas with an ultra-low profile- would ever be within reach. But the journey to this goal has been a long, difficult one because of the many desired features of such a product as depicted in the figure below. NSR has often noted the tremendous increase in satellite mobility bandwidth demand has driven many operators to add new HTS systems and constellations to meet this demand. But at the same time, the industry metric has put more emphasis on cost-efficiencies, which is where NSR expects flat panel antennas (FPAs) to play a key role in this transformation. As service providers look to provide more bandwidth at lower cost to end-users, falling capacity prices, next generation modems with beam switching capabilities, and better software are icing on the cake of the HTS capacity onslaught, in which FPAs are a perfect fit. In NSR’s recently released Flat Panel Satellite Analysis report, both the mobility and fixed satellite side of the business were analyzed, and commercial aeronautical connectivity was observed on top as the biggest driver and revenue generator for FPAs. Indeed, a low-profile antenna is a necessity for......

Words: 495 - Pages: 2

Microstrip Antenna

...IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 54, NO. 12, DECEMBER 2006 3755 A New Compact Microstrip-Fed Dual-Band Coplanar Antenna for WLAN Applications Rohith K. Raj, Manoj Joseph, C. K. Aanandan, K. Vasudevan, Senior Member, IEEE, and P. Mohanan, Senior Member, IEEE Abstract—A novel compact microstrip fed dual-band coplanar antenna for wireless local area network is presented. The antenna comprises of a rectangular center strip and two lateral strips miprinted on a dielectric substrate and excited using a 50 crostrip transmission line. The antenna generates two separate resonant modes to cover 2.4/5.2/5.8 GHz WLAN bands. Lower resonant mode of the antenna has an impedance bandwidth (2:1 VSWR) of 330 MHz (2190–2520 MHz), which easily covers the required bandwidth of the 2.4 GHz WLAN, and the upper resonant mode has a bandwidth of 1.23 GHz (4849–6070 MHz), covering 5.2/5.8 GHz WLAN bands. The proposed antenna occupy an area of 217 mm2 when printed on FR4 substrate . A rigorous experimental study has been conducted to confirm the characteristics of the antenna. Design equations for the proposed antenna are also developed. ( = 4 7) Index Terms—Coplanar waveguide, dual-band antennas, printed antennas, wireless local area networks (WLANs). I. INTRODUCTION IRELESS LOCAL area networks (WLAN) are being widely recognized as a viable, cost effective and high speed data connectivity solution, enabling user mobility. The rapid developments in WLAN......

Words: 5288 - Pages: 22

Direction vs Omnidirectional Antennas

...Compare and contrast the two types of antennas. Two types of antennas are directional and omnidirectional antennas. Both antennas send signals over a medium. The directional antenna signal in one specific location and is used on in the exterior of building and it points to the inside direction of the building. The oval shape acts as a barrier to keep the signal flowing in one directions and it keeps the signal from distorting or flowing in multiple locations. This means that anyone than needs to access the network, needs to be inside of the building hence, this is reduces any security issues on the network. However the WAN technologies use omnidirectional antennas because it spreads the signals as far as the wavelength can reach. This spreads the network to any neighboring buildings but also pose as a security risk because anyone in the proximity of the wave length can have access to the network. The signal spreads in every direction as compared to the directional antenna that focuses on one direction. The picture below, which was taken from the network textbook, shows the both antennas in addition to the signal flow. How does 802.11g differ from 802.11b and 802.11a? 802.11b has a range of 2.4GHz and provides only three channels for indoor usage. Each channel however, has up to 11Mbps and when the signal reaches furthers out, it begins to weaken. It is more advanced than the 802.11a because of the broader frequency range and it suffers less attenuation. The only...

Words: 346 - Pages: 2