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If a transmitter produces 50 W of power, express the transmit power in unit of (a) dBm, and (b) dBW. If 50 W is applied to a unity gain antenna with a 900 MHz carrier frequency, find the received power in dBm at a free space distance of 100 m from the antenna. What is P,(10 km)? Assume unity gain for the receiver antenna. Answers: Pr(100m)= -24.53dBm Pr(10km) = - 64.53dBm

If a transmitter produces 50 W of power, express the transmit power in unit of (a) dBm, and (b) dBW. If 50 W is applied to a unity gain antenna with a 900 MHz carrier frequency, find the received power in dBm at a free space distance of 100 m from the antenna. What is P,(10 km)? Assume unity gain for the receiver antenna. Answers: Pr(100m)= -24.53dBm Pr(10km) = - 64.53dBm

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Example 2.3 Consider an indoor wireless LAN with f = 900 MHz, cells of radius 100 m, and nondirectional antennas. Under the free-space path loss model, what transmit power is required at the access point such that all terminals within the cell receive a minimum power of 10 µW. How does this change if the system frequency is 5 GHz? (Nondirectional antennas, GG = 1) %3D P = 21.52 dBW P, = 36.42 dBW MWALPEL
Transcribed Image Text:Example 2.3 Consider an indoor wireless LAN with f = 900 MHz, cells of radius 100 m, and nondirectional antennas. Under the free-space path loss model, what transmit power is required at the access point such that all terminals within the cell receive a minimum power of 10 µW. How does this change if the system frequency is 5 GHz? (Nondirectional antennas, GG = 1) %3D P = 21.52 dBW P, = 36.42 dBW MWALPEL
Example 2.2 :- If a transmitter produces 50 W of power, express the transmit power in unit of (a) dBm, and (b) dBW. If 50 W is applied to a unity gain antenna with a 900 MHz carrier frequency, find the received power in dBm at a free space distance of 100 m from the antenna. What is P,(10 km)? Assume unity gain for the receiver antenna. Answers: Pr(100m)= -24.53dBm Pr(10km) = - - 64.53dBm
Transcribed Image Text:Example 2.2 :- If a transmitter produces 50 W of power, express the transmit power in unit of (a) dBm, and (b) dBW. If 50 W is applied to a unity gain antenna with a 900 MHz carrier frequency, find the received power in dBm at a free space distance of 100 m from the antenna. What is P,(10 km)? Assume unity gain for the receiver antenna. Answers: Pr(100m)= -24.53dBm Pr(10km) = - - 64.53dBm
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