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a communication system operating with a center frequency of 900 mhz has a 20 watt transmitter feeding a 216 dbi antenna
a 18 ghz transmitter and a receiver are separated by 6 km a sharp edge absorbing screen is inserted below and normal to
if in the communication system described in problem 55 the screen is inserted so that its edge is 20 m above the direct
a 1 ghz transmitter sends a signal to a receiver 4 km away there are three knife-edged absorbing screens intercepting
repeat problem 57 using the causebrook correction to find a better value of the excess path lossproblem 57a 1 ghz
use the empirical path loss formula to calculate the range for a maximum acceptable path loss of 115 db given that the
a cell phone system in an urban area is to be designed to allow reception at the cell edge with a 96 success rate the
repeat the calculation in problem 61 with the added provision that the signal must be accessible inside buildings the
a cell phone system is to provide a 90 call success rate at the cell edge with a location variability of 8 db what
given that the autocorrelation function of shadowing falls to 1e of its initial value at a distance of 60 m estimate
if a mobile phone in an automobile traveling at 50 ms approaches a second automobile coming toward it at a speed of 40
for the ionospheric model in problem 75 calculate the differential delay at the opposite extremes of the transmitted
when plasma density in the ionosphere has a peak value of 1012 per cubic meter at an altitude of 350 km what is the
1 a radio wave is launched at sea level with an elevation angle of 1deg the refractive index is constant at 300 n-units
a transmitting antenna is located 50 m above the surface of the eartha calculate the effective distance to the horizon
1 calculate the orbital velocity and the period of the following satellites of the eartha the moon which is 384000 km
a receiving antenna on earth located at 55 degrees north latitude has a 3 db beamwidth of 1deg at 10 ghz its elevation
1 if a clock is placed on the surface of the moon how much of a time difference will there be compared with an
read the following atachment and study the graphs and answer these questions as a paragraph one page only 1 what
assignment 1electric charges fields and potentialsplease solve the following problems you must show all work for
bullphysicsplease solve the following problems you must show all work for fullpartial credit when complete attach a
a rays of light a incident on a glass plate of refracted index 1536 such that reflected and refracted rays are mutually
liquid water extinguishes a flame two ways one by absorbing much of the heat that the fire needs to sustain itself and
a 5-kg fish swallows an absentminded 1-kg fish swimming towards it at a velocity that brings both fish to a halt
a simplified model of a cable-stayed bridge can be thought of as a mass hanging from two cables attached to towers if a