Tags

    1/14/11

    Today in class we looked at different types of antennas. We learned about Bels and deci Bels. We did a lot of math stuff with the bels and the intensity of the antenna. We talked about all the different kinds of antennas.
    1. parabolic dishes
    2. Yagi antennas - long and thin
    3. Sector antennas - cellular antennas (very expensive, wide range 90 to 180 degrees, but only 3 degrees vertically)
    4. Omni antennas - circular antenna (only has circular range)
    Then we talked a little about Watts.
    1. laptop and phones - 10 mW
    2. nano - 80 mW
    3. bullet 2 - 200 mW
    4. 2H - 500 mW
    5. rocket 2 - 800 mW

    Comments