force is canceled by the positive charges in the transmitting antenna. So‚ the resulting force is an oscillating force that pushes vertically on electrons. This force propagates out as a wave as the signal travels at the speed of light. 2) How does your antenna work to detect this electromagnetic signal produced when radio stations broadcast? Include the physics principles that support your description of how this signal is detected. Antenna works as receiver. The receiver is a nearby loop of wire
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(ICMiCR-2013) Compact dual-band Monopole Antenna for WLAN/WiMAX Applications Khalid Ali Sultan Jasim Y. E. Mohammed Ali Dept. Electrical Engineering University of Mosul‚ College of Engineer Mosul‚ Iraq khalidsultan3041@yahoo.com Dept. Electrical Engineering University of Mosul‚ College of Engineer Mosul‚ Iraq a.yessar@yahoo.com Abstract— This paper displays a new compact monopole antenna of dual band for WLAN/WiMAX applications. The designed antenna has very small size of 30×20 square
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References: Alberts et al‚ B. (2014). Macromolecules in Cells. In Essential Cell Biology (Fourth ed.‚ pp. 126-142). New York: Garland Science. Lin‚ Y.‚ Lee‚ Y.‚ Yoshimura Y.‚ Yagi H.‚ Goto Y. (2013). Solubility and supersaturation-dependent protein misfolding revealed by ultrasonication. Langmuir‚ 30‚ 1845-1854. DOI: 10.1021/la403100h Morgan‚ G.‚ & Radford‚ S. (2012). How Proteins Fold and Misfold. In Protein Folding and
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Lens Antenna an antenna whose directivity pattern is a result of the difference between the phase velocity of propagation of an electromagnetic wave in air and that in the lens material. Lens antennas are used in radar and metering equipment that operates in the centimeter wavelength range. A lens antenna consists of a lens proper and of a feed. The shape of the lens depends on the refractive index n (the ratio of the phase velocity of propagation of a radio wave in a vacuum to that in the lens)
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Kristin Adler Contemporary Moral Problems December 15‚ 2009 End of Life I would like to start off by answering two questions: “What is a person? and “What is death?” When I started looking up a definition for “person” it amazed me how many different variations there are. I feel that a person is one that is recognized by the law and has rights and duties. A person also has the moral right to make its own life-choices and to live without interference from others. Death is an eternal termination
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detection .The device can be called as a mobile Base station that includes Sniffer Base station‚ Unidirectional antenna ‚ Tracking software. The sniffer is a small base station that includes transceiver section. It should operate at a frequency which is much different from the frequency of the current cell in which the operation of detection is being carried out. The directional antenna is an important device that is to be designed and used as it plays a major role. There are certain boundary conditions
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source‚ traveling at the speed of light. The source‚ for example an antenna‚ creates oscillating electric(E)/ magnetic(B) fields. These fields are perpendicular not only to each other but to the direction of the traveling wave‚ and travel away from the antenna. The electromagnetic wave is‚ therefore‚ a transverse wave. The electric/ magnetic fields store the energy of the wave. Basically‚ the oscillating current to the antennas sets the electrons in motion. These electrons‚ being accelerated‚ create
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the transmissions are focused with a desired area. When the area is focused‚ then the emissions don‟t go outside that designated area and thus minimizing the interference to the other systems. This leads more efficient spectrum usage. Satellite‟s antenna patterns play an important role and must be designed to best cover the designated geographical area (which is generally irregular in shape). Satellites should be designed by keeping in mind its usability for short and long term effects throughout
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MOBILE COMPUTING Chapter 1: Outline 1.1 Introduction to Mobile Computing 1.2 Radio Propagation 1.3 Antennas 1.4 Cellular Systems 1.5 Wireless Link Characteristics ERIC SAVIOUR ARYEE OKAI OCT‚2013 MOBILE COMPUTING 1.1 INTRODUCTION What is Mobile Computing? Mobile Computing is a technology that allows transmission of data‚ voice and video via a computer or any other wireless enabled device without having to be connected to a fixed physical link. ERIC SAVIOUR ARYEE OKAI OCT
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A parabolic antenna for Erdfunkstelle Raisting‚ based in Raisting‚ Bavaria‚ Germany. To direct microwaves in narrow beams for point-to-point communication links or radiolocation (radar)‚ a parabolic antenna is usually used. This is an antenna that uses a parabolic reflector to direct the microwaves. To achieve narrow beamwidths‚ the reflector must be much larger than the wavelength of the radio waves. The relatively short wavelength of microwaves allows reasonably sized dishes to exhibit the desired
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