ET3220 Week1 Assignment 2 - KhalidALBaidhani Week1andHW#1...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Khalid AL-Baidhani Week1 and HW#1 ET 3220 2.2 Below 2 MHz radio waves more or less follow earth’s surface. One reason is diffraction (waves are diffracted in the direction of objects which have more or less the size of their wavelength). An additional factor is electrical power which is induced in the surface by the waves. This slows down the wave front near the surface so that the wave front is brought in a “curve” and travels along the surface. There are several reasons why low frequencies are not used for radio data transmission: • Low frequencies give us only low data rates, because the bandwidth is smaller than for higher frequencies. • Regarding the large wavelength of low frequencies, for generation and receipt of the waves we need really large antennas – which are not suitable for the usual size of a mobile device. • The attenuation and shading of lower frequencies is less than of higher frequencies so
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern