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Published byXavier Weymouth Modified about 1 year ago

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LAB 3 Antennas

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Antenna Gain What factors determine antenna gain? Effective Area Wavelength

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Propagation modes 1. Ground Wave 2. Sky-Wave Progagation 3. Line Of Sight

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For parabolic reflective antenna with diameter 2 meter,operating at 12 GHz,what is the effective area and the antenna gain ?

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State which mode applied to each system Am Radio – Ground wave Propagation International Broadcast Such as BBC- Sky Wave Propagation Satellite Communication – Line Of Sight

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Name and briefly four types of noise ?

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How to overcome the attenuation ? Use Amplifiers and Repeaters

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Show that doubling the transmission frequency or doubling the distance between transmitting antenna and receive antenna the power received by 6 dB?

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Determine the height of an antenna for TV station that must be able to reach customers up to 80 km away

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What the thermal noise of a channel with a bandwidth of 10 KHz carrying 1000 Watt of power operating at 50 C ? Compare the noise level to the operating power

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