Advantages Of Amplitude Modulation

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Amplitude Modulation is a modulation technique where carrier amplitude alters depending on analog baseband signals, which are transmitted via wireless devices. Amplitude Modulation signals are propagated through ground waves. Advantages of Amplitude modulation include lower power consumption and are used for efficient management of spectrum. Frequency Modulation is viewed upon as being more powerful compared to Amplitude modulation. This is because frequency modulation includes better noise immunity and is able to reject other interfering signals. This is simply down to the capture effect. The best method for applying modulation to a signal, is to superimpose an audio single onto the amplitude of the carrier. Phase Modulation is used…show more content…
It is made up of a closed conducting metal pipe, which holds radio waves, which are characterized in accordance to the rebounds coming off conducting walls. Here is a diagram below: Another type of waveguide is the dielectric waveguide, which consists of the dielectrics and reflections from interfaces which multiply the EM waves in conjunction with the waveguides. Some advantages of waveguides below: - Highly secure: Well shielded and protects the waves well. - Is able to transmit power at a high rate. - It has a low loss rate - Waveguides are able to bend if desired. Disadvantages below: - They cost a high amount of money. - They generally take up a lot of physical space. Another type of waveguide is the rectangular waveguide. This is amongst the most commonly used than any other waveguide. These type of waveguides support TE and TM modes but can’t propagate below a specific frequency, which is called the cutoff frequency. We then have circular waveguides, which allow a twisting of waves due to the physical dimensions. These types of waveguides maintain a uniform cross section alongside the actual…show more content…
These types of frequencies are defined from 1 GHz to 100+ GHz. Each band is represented by a letter. The popular network regulator company ‘Ofcom’ uses these bands to regulate the network and how much frequencies different service providers are using. Microwaves are usually divided into three categories: - Ultra-high frequency (UHF) (0.3-3 GHz) - Super high frequency (SFH) (3-30 GHz) - Extremely high frequency (EHF) (30-300 GHz) The Radio Society of Great Britain has introduced the following radio frequency bands: Band Frequency Range Wavelength Range L band 1 to 2 GHz 15 cm to 30 cm S band 2 to 4 GHz 7.5 cm to 15 cm C band 4 to 8 GHz 3.75 cm to 7.5 cm X band 8 to 12 GHz 25 mm to 37.5 cm Ku band 12 to 18 GHz 16.7 mm to 25 mm K band 18 to 26.5 GHz 11.3 mm to 16.7 mm Ka band 26.5 to 40 GHz 5.0 mm to 11.3 mm Q band 33 to 50 GHz 6.0 mm to 9.0 mm U band 40 to 60 GHz 5.0 mm to 7.5 mm V band 50 to 75 GHz 4.0 mm to 6.0 mm W band 75 to 110 GHz 2.7 mm to 4.0 mm F band 90 to 110 GHz 2.1 mm to 3.3 mm D band 110 to 170 GHz 1.8 mm to 2.7

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