Week 2 Discussion Question 1.odt - Omnidirectional antenna An omnidirectional antenna is a wireless transmitting or receiving antenna that radiates or

Week 2 Discussion Question 1.odt - Omnidirectional antenna...

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Omnidirectional antenna An omnidirectional antenna is a wireless transmitting or receiving antenna that radiates or intercepts radio frequency electromagnetic fields equally well in all horizontal directions in a flat, two dimensional geometric plane. Omnidirectional antennas are used in most consumer radio frequency wireless devices, including cellphones and wireless routers. In the usual context, a so called omnidirectional antenna does not perform equally well in all possible directions in three dimensional space. Omnidirectional antennas are very easy to install. Due to the 360 degrees horizontal pattern, it can even be mounted upside down from a ceiling in the indoor environment. Also, because of its shape it is very convenient to attach these antennas to the product. For example, you might see Rubber Duck
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Unformatted text preview: antennas attached to the wireless APs. In order to obtain an omnidirectional gain from an isotropic antenna, energy lobes are pushed in from the top and the bottom, and forced out in a doughnut type pattern. If you continue to push in on the ends of the balloon, a pancake effect with very narrow vertical beamwidth results, but with a large horizontal coverage. This type of antenna design can deliver very long communications distances, but has one drawback which is poor coverage below the antenna. Omni Antenna vs. Directional Antenna. (n.d.). Retrieved August 24, 2015. What is omnidirectional antenna? - Definition from WhatIs.com. (n.d.). Retrieved August 24, 2015....
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