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For a satellite phone antenna communication link at 10GHz. Assume the phone to be hand-held(i.e no pencil -beam emitted, fold-out antennas might be an option) and a LEP (low earth orbit) satellite at a height of 780KM. Keep in mind that a LEO satellite is moving with respect to earth's surface. Pick state-of-the-art amplifier electronics etc.One way for instance is t use thermal noise as the limiting factor, with a temperature of 290K on ground, and less than 50K for the satellite, with impedances matched to antenna impedances. Assume reasonable maximum sizes of both the satellite antenna and the hand-held phone antenna, and reasonable values for the power available on ground and for the satellite.what is the received power needed ?
Inflation in years 1-5 equals 3.1 percent, 2.2 percent, 1.6 percent, 1.3 percent, and 1.1 percent, respectively.
When one push button is pushed, the selected soda is dispensed and the machine returns to its initial state. One other feature is that an LED comes on to warn the user that two quarters are not available for change, so if a second $1 bill is inser..
Suppose that the cost of electrical energy is $0.12 per kilowatt hour and that your electric bill for 30 days is $60 (power usage only, not including other charges or taxes) Assume that the power delivered is constant over the entire 30 days.
Write a recursive function that given integer n, counts down from n to 1. When the count reaches 0,your function should also display "GO!" Write a recursive function that takes a character array and prints the array without the vowels.
Write a Verilog behavioral dataflow model for a 4-bit expandable ALU. Create it using a hierarchical description that includes a behavioral dataflow model of an expandable 1-bit ALU.
A string of Christmas tree lights of eight (6W, 15V) bulbs connected in series. a) What current flows when the string is plugged into a 120V outlet b) What is the resistance of each bulb
b) Calculate the armature current at start c) The motor is now used as a generator. Calculate the speed of the machine if the armature current is 80A and there is a 230V at the motor's terminals. Assume a constant flux.
The sampled signal is passed through an ideal LPF which rejects all frequencies above 8 kHz and has a gain Ts. Les sR(t) be the output of the LPF. Sketch LT[sR(t)], in which FT[] denotes the Fourier Transform, in frequency domain.
A 1000 kg battery powered adiabatic electric vehicle has a fully charged battery containing 20.0 MJ of stored energy. If it requires 12.0 kW of power to keep it moving at a constant velocity on a horizontal road
Bandwidth, In a given communications system, one signaling element is used to represent 64 bits. The required data rate is 1.789 Mbps.
Steel surfaces can be hardened by carburization. During one such treatment at 1000°C, there is a drop in carbon concentration from 5 to 4 at% carbon between 1 and 2 mm from the surface of the steel. Estimate the flux of carbon atoms into the steel
1- find the inverse Laplace transforms of the following functions: A- f1(s)= 50(s+10)/((s+5)(s+20)) b- f2(s)= (2s^2)((s+200)(s+500)) 2- find the inverse Laplace transforms of the following functions and sketch their waveforms for β >0 : a- f1(s)= (β(..
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