In this assignment‚ we are required to design an antenna which is capable of transmitting and receiving electromagnetic waves operating at 433MHz. Our aim is to maximize the gain of the antenna and achieve impedance matching between load impedance and transmission line’s impedance. Among a wide range of different antennas‚ our group decide to build up a Yagi Uda antenna to fulfill this assignment for two main reasons. Firstly‚ the gain that Yagi Uda antenna provides is very high. Hence for transmission
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NATIONAL SENIOR CERTIFICATE EXAMINATION NOVEMBER 2008 PHYSICAL SCIENCES: PAPER I Time: 3 hours PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY 1. This paper consists of: • a question paper of 17 pages • a data and formula booklet of 3 pages (i – iii) Please make sure that your question paper is complete. 2. 3. 4. 5. 6. Remove the pages of data and formulae from the middle of this question paper. Use the data and formulae whenever necessary. Read the questions carefully. In Question 1 answer 1
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technology? A. The technology in which the parameters such as amplitude‚ phase and frequency of radio frequency waves are changed so as to transmit and receive the information is known as RF technology or radio frequency technology. In this‚ the electromagnetic waves that lie in the range of 3 khz to 300 Ghz are used for the wireless communication between the two devices. The signal is modulated at the transmitter end and then the antenna converts this electrical signal into the radio waves and emits
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Microwave power transmission (MPT) is one of the applications of microwaves to transmit power from one place to another place without the need for wires. It is the type of the Electromagnetic Radiations‚ one of the wireless energy transfer methods. Introduction: Firstly‚ we will talk about the term Microwaves‚ Microwaves can also be termed as Radio waves having wavelengths ranging from one millimeter to one meter and the frequencies from 300MHz to 300GHz. These are also known as millimeter waves
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On the surface‚ the image of Hans appreciating the picture of his beloved as she rides away doesn’t sound out of the ordinary. However‚ when taking a look at the image this “portrait” provides‚ it’s a little less than conventional. An X-ray is essentially a picture of a person’s skeleton‚ and skeletal figures are a big aspect of the Mexican Day of the Dead holiday. During this day‚ family and friends get together to pray for and remember their passed loved ones‚ and provide food and drinks to help
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pigment the changes color when exposed to ultraviolet light radiation. The dye in the UV bead is photo chromic that changes color when exposed to UV‚ which is chemical reaction. Review Literature UV‚ or ultraviolet‚ light is an invisible form of electromagnetic radiation that has a shorter wavelength than the light humans can see. It carries more energy than visible light and can sometimes break bonds between atoms and molecules‚ altering the chemistry of materials exposed to it. Ultraviolet-sensitive
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Centre Number Surname Other Names Candidate Signature Candidate Number For Examiner’s Use Examiner’s Initials Question Mark General Certificate of Secondary Education Higher Tier June 2012 1 2 3 4 5 6 7 8 TOTAL Science A Unit Physics P1 PH1HP Physics Unit Physics P1 Wednesday 20 June 2012 9.00 am to 10.00 am H For this paper you must have: a ruler the Physics Equations Sheet (enclosed). You may use a calculator. Time allowed 1 hour Instructions Use
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__________________________________________ Mission We achieve customer satisfaction through service excellence and operational responsiveness. To provide network access and telecommunication services. To advance the quality of life by delivering the best solution to the communications based needs of our subscribing publics. SID is a customer-motivated organization; always striving to deliver innovative solution to extend the boundaries of communication at the sea‚ on land and in the air. SID’s
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multiband UWB transceiver is studied and power-efficient circuits is designed for the transceiver. ABOUT UWB Ultrawide band technology is a wireless technology to transmit large amount of digital data as modulated coded impulses over a very wide spectrum of frequency with very low power for a short distance.In 2002‚the Federal Communications Commission allows UWB Communication in the 3.1-10.6 GHz band having a -10 dB bandwidth greater than 500 MHz and a maximum equivalent isotropic radiated power
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A NEW REVOLUTIONARY SYSTEM TO DETECT HUMANBEINGS BURIED UNDER EARTHQUAKE RUBBLE USING MICROPROCESSOR OR MICRO COTROLLER [pic] [pic] “Thousands of persons killed as a cause of earthquake”. The above words aren’t the headlines of the newspaper but daily news everyone come across whenever we go through a newspaper or watching over a TV news. A person’s life is precious and meaningful to his loved ones. We‚ as responsible Engineers felt a part of society to bring
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