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1 ) A satellite in Geosynchronous orbit (37000 Km above the equator ) is used for communication at 30 GHz . The Atmosphere is 15 Km thick . Assume free space above the atmosphere and plane wave propagation . Properties of the atmosphere are ε= 1.05 ε0 , µ = µ0 and s= 10-6 S/m . calculate :a) the phase velocity in air and in free space .b) The attenuation and phase constant in air and in free space .c) the propagation constant in air . compare with the propagation constant in free spaced) compare the intrinsic inpedance in free space and in air .
2) the Electric field intensity of a plane electromagnetic wave is given as E(z) = 8 cos (106 π t ) ix at point ( x=0 , y=0 , z=0 ) . the magnetic field intensity is the positive y direction and the wave propagates in a material with properties ε= ε0 , µ = µ0 and σ= 1.5 x 10-5 S/m .a) calculate the magnetic field intensity at a distane of 1 Km from point P in the direction of propagationb) how much faster does the wave propagates if σ=0 ?
Write the VHDL PROCESS statements for a D flip-flop with asynchronous active-LOW clear, synchronous active-LOW preset, and responsive to a falling edge clock. Use D for the input, Q and for the output, PRE for the preset, CLR for the clear, and CL..
2) Draw the logic circuit for each of the following. For each gate, determine EVEN or ODD parity and find the output for the given input data: a) 4-input XOR, input data=1001 b) 5-input XOR, input data-10010 c) 6-input XOR, input data=101001 d) 7-..
A resistor R is in series with a parallel LC circuit. The individual component values are R=150ohm, XL=j100ohm, Xc=-j50ohm. what is the total sorurce current, Is?
An input signal of 10V at 0o and a frequency of 1592 Hz is applied to a series RLC circuit with resistor R = 100 ohm, inductor L = 20 mH, and capacitor C = 250 nF. What is The value of the total circuit complex impedance.
An RLC circuit exists, with current flowing counter clockwise through it. R= 5.661 Ohms, L=20.2 mH, and C=157.6?F. Voltage across the capacitor is positioned so that the current meets the positive terminal first.
A transistor current source (also known as current ''sink'') was built with a 2N3904. The Ic was measured for different values of a load resistance. It was noticed that Ic was pretty much constant for the first 1900 ohms values
Design and implement a Rectangle class. Make your class inherit from the Point class given in the lecture (notice that a rectangle can be described through the upper-left vertex, the height, and the width).
Design a 3-bit counter using D flip-flops to cycle through the following sequence: 010, 101, 110,001. Make sure the counter is self-starting.
An 8mm thick brass [E=83 GPa; v = 0.33] plate is subjected to biaxial stress with sigma x = 180 MPa and sigma y = 65 MPa. The plate dimensions are b = 350 mm and h = 175 mm.
Determine the left triceps muscle force (Ftri), elbow joint reaction force (Rj) required to hold this position along with any ground reaction forces (Rg) and/or reaction moments (Mg) in the hand. Show all necessary free body diagrams along with th..
A certain lightbulb has a tungsten filament with a resistance of 21.9 when at 20.0°C and 145 when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here.
Design the circuit so that the voltage at the gate is -12V, the drain current ID is 1 mA, and the drain to source voltage VDS is 4.7V. The JFET must be operating in the saturation region. Use standard 5% tolerance resistors.
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