Advantages Of The Plasma Antenna Information Technology Essay

Advantages Of The Plasma Antenna Information Technology Essay An antenna is a device that sends or accepts electromagnetic waves. It changes electromagnetic waves into electric currents, and electric currents to electromagnetic waves. Antennas are used to send and receive waves from the radio frequency of the electromagnetic spectrum. Antennas are used in radio and television broadcasting, spacecraft communication, point-to-point radio communication like walkie-talkie system, hand phones, radar, and wireless LAN. An antenna is a setup of one or more electrical conductors, also called elements. In the transmission of an antenna, a voltage is applied at the antenna terminals to produce an alternating current (A.C) in the elements, thus causing the elements to produce an electromagnetic field as an effect. In reception, the reverse happens: an electromagnetic wave from an external source induces an alternating current in the elements and a matching voltage at the antenna’s terminals. Some receiving antennas use shaped reflective surfaces t o collect the radio waves hitting them and direct or focus them onto the elements. Heinrich Hertz (1857-1894) built some of the first primitive antennas in 1888 in his experiments to prove that electromagnetic waves exist as inferred by the James Clerk Maxwell’s theory. One of the antennas he built was the dipole antenna, which will be explained in detail in the Supporting Theory section of this report. He published his work and installation design in Annalen der Physik und Chemie (vol. 36, 1889). In 1919, J Hettinger was granted a patent for the concept of a plasma antenna. A plasma antenna is a type of antenna that is currently in development in which plasma is used to replace the metal elements of a normal antenna. A plasma antenna can be used for transmission and reception, just like normal radio antennas. Plasma antennas have only become practical in recent years, where high speed internet connection is an important necessity to all. Currently, Plasma Antennas (a company ) in Winchester of the United Kingdoms have developed a plasma antenna which they named Plasma Silicon Antenna or PSiAN. FINDINGS 2.1 – SUPPORTING THEORY 2.1.1à ¢Ã¢â€š ¬Ã‚ ¢ ANTENNA Here is an explanation of how a traditional antenna works. There are many types of antennas that have been designed by humans over the years but for simplicity’s sake, the explanation here will describe how a dipole antenna works. A dipole antenna is an antenna that can be built using a simple wire with a driven element in the centre. It consists of two metal conductors of rod or wire, arranged parallel and in line with each other, with a small space between them. The radio frequency voltage is applied to the driven element at the center, between the two conductors. These antennas are the most primitive practical antennas. They are used mostly in traditional â€Å"rabbit ears† television antennas. 450_wide.jpg How the antenna transmits signals: First, a voltage is applied to the ant enna terminal (in this case, the driven element in the centre) to produce a potential difference in between the opposite ends of the two conducting wires. When a potential difference exists, there will be a flow of electrons, which in turn produces a current. Say that the electrons from end A are moving towards end B at maximum speed. When they reach end B, they will stop instantaneously. End B is now negatively charged whereas end A is positively charged. The electrons are attracted to the positive charges at end A and move back towards A at maximum speed. Now, the charges at both ends are reversed. This back and forth movement of the electrons produces an alternating current in the conducting wires. When there is an alternating current in the metal conductors, electromagnetic waves are produced. These waves are the signals being transmitted by the antenna.

Auto Biography Essay Example | Topics and Well Written Essays - 1000 words

Auto Biography - Essay Example My mother has a rough life, and she is disabled, being a DID with multiple personality disorder, so I help her out as well. Naturally, I am an outgoing, generous, and carefree person. I am smart can learn anything fast, and have a great memory. I have always had a lot of friends at home, school and work. I have always been a leader and I understand how to take on a task and complete with quality. People look up to me at my workplace, and I have been the motivator in the departments I have worked at. I got my GED in 2004 went to the Art institute in Dallas TX for 2 years for visual communications, but stopped going when my mom got ill. Went to Westwood college in Dallas TX for graphic design for a year, but ended it when I found out they are not an accredited school and my credits would not transfer. I finally found Letourneau University from a coworker at work telling me about it. I am going for my bachelors in business management, but also want to get back into graphic and web design after accepting my diploma. I thought an art degree needed something I could fall back on, so going for business since I seem to be good at it in my career. I currently pursue a Bachelor of Arts, Business Management, Letourneau University, Longview, TX, and hopes to graduate in fall 2015. I am a service and administrative professional with more than 10 years of experience leading teams and providing exceptional customer service to clients. I am dedicated to transitioning knowledge and skills from previous experience to build a solid career in the auto finance field. I worked at LA QUINTA, Dallas, TX, from 2002 to 2007, as a front office manager, where I conducted administrative operations, served as first point of contact for all guests, and attended customer phone calls to make room reservations. In addition, I coordinated bookings for conventions, tours, and groups of 50+ people, and collected payments on

Licensing and Professional Organizations Research Paper

Licensing and Professional Organizations - Research Paper Example I decided to work in the Family Practice Clinic, as it will suit my passion of serving all from the young to the elderly who may have different difficulties due to their ages. Family nursing practitioner roles requires nurses to be registered nurses in order to serve as primary and as specialty health care providers. FNPs work with patients throughout their lives, conducting exams, diagnosing illnesses, prescribing medication and therapy, conduct routine checkups, and assisting in minor surgical procedures. Working in family nursing organization requires one to dedicate his profession in serving the patients as their sole care provider while also running own private practices. Offering of these requires the nurses to be well structured, multifaceted, independent, and to have a patient facing mentality (Mason, Leavitt & Chaffee, 2013). In family nursing organization, advocacy is the cornerstone of the complete nursing procedures. Nurses usually advocate causes, patients, and the profession itself. The main advocacy in the organization, motivated by the moral and ethical principles will be seeking to influence different policies in the primary health care sector. The influence would be through arguing or pleading within the economic, political, and social systems in an effort to promote the nursing fraternity in offering family nursing services. The aim of the organization is to coordinate care on a large scale among families adhering to the organizational scope of delivering high quality care to the patients. In this case, communication will be the main governing tool. The organization aims at offering patient-centered care, in that the patients would be in active involvement with their care providers in making health decisions. The organization aims at being all round although the roles, medical treatments, medical duties, and pharmacological abilities in the nursing profession depend on state of licensure. The main roles of the nurses in the Family