homework5 - ECE 3025 Homework 5: Lossy Transmission Lines...

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ECE 3025 Homework 5: Lossy Transmission Lines 1. When designing in-building wireless coverage, engineers often lay leaky-feeder coaxial cable that radiates a small portion of its modulated signal into the environment. The leaky-feeder cable can be modeled as a low-loss transmission line. You decide to deploy a wireless local area network that provides radio coverage to the 3rd floor of Van Leer. To ensure good coverage, you place one antenna on the corner of the building. This antenna is 30m away from the radio transmitter and is connected with a matched coaxial line that is run on top of the drop ceiling (above the tiles overhead). You decide to use a 12m segment of leaky-feeder coax in a section of cabling that passes by an area of poor radio coverage. You measure 30 dBm of power leaving the transmitter and 25 dBm of power entering the antenna. What is the attenuation constant, α , for this line? (5 points) 12m Antenna Leaky Feeder Cable WiFi Transmitter 2. A twisted pair of 22 gauge copper wires insulated with polyethylene connects your house to
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homework5 - ECE 3025 Homework 5: Lossy Transmission Lines...

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