Perform the calculations for the forward link of Example 4-8 also for operation at 1900 MHz. Assume the base station transmits 20 W and the handheld terminal has an antenna temperature of 290 K and a receiver input noise temperature of 1500 K. Assume the transmit antenna is impedance matched to its transmission line.
A Cell Phone Reverse Link Here we consider a typical cell phone reverse link (uplink) from a handset to a base station with a sector antenna. The handset transmits at 1900 MHz with 300 mW of power into a -1-dB gain, vertically-polarized omnidirectional antenna with a VSWR of 3. The antenna on a base station tower 8 km away has a slant 45 linear polarization, a 6 elevation beamwidth, and a 90 azimuth beamwidth. It is desired to calculate the power available from the receive antenna. First, the base station receive antenna gain is found using (4-57) to be Gr ¼ 16:8 dB and is impedance matched. The impedance mismatch loss at the transmitter from (4-43) in (4-41) is q ¼ 0:75 and the polarization mismatch loss from (4-47) is p = 0:5 Using a 1/R4 distance variation, which is typical for many propagation scenarios.
At the last board meeting a member proposed that the Marshall Lions Club lower its hamburger price at the Celebrate Marshall Festival. He a...Dec 09 2019
Verifying a Differentiation Formula In Exercises 102-104, verify the differentiation formula.Aug 16 2021
Use the following information to work Problems 32 and 33. Suppose that in response to huge job losses in the U.S. textile industry, Congress imposes a 100 percent tariff ...Aug 08 2020
Basically, variance analysis is a comparison of actual performance to expected performance Share your personal and/or professional experiences with variance analysis rela...Mar 23 2020
What is the survival revenues breakeven based on the following: Administrative expenses = $200,000; Marketing expenses = $180,000; Depreciation expenses = $100,000; and I...Jun 22 2021
Problem: What are the effects of transportation costs on trade? What would happen if transportation costs were absent?Jun 04 2020
Company A and Company B each have a $ 10,000 bond outstanding. Required: a. If both companies’ bonds are due in ten years, what factor(s) might make the bond market value...Apr 01 2020
As you progress through the chapters, you will learn how to use design as a tool to create effective webpages and websites. At each chapter's conclusion, you will receive...Jun 21 2021
A source vS with a 1-kΩ internal resistance is fed to a current amplifier of the type of Fig. 1.2 having Ri = 200 Ω, Asc = 180 A/A, and Ro = 10 kΩ. The amplifier in turn ...Aug 06 2020
Rewrite the following sentences, making sure that all numbers are expressed properly.To ride Formula Rossa, you must be at least fifty-five inches but less than 6' 5" tall.Jul 20 2021