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A half-wave dipole antenna in a PCS handset at 1.9 GHz, requires a signal strength of 0.01 micro volts per centimeter to operate with acceptable performance. The transmit antenna is assumed to be a half-wave dipole, has a cell radius of 5 km. Determine the power to be supplied to the transmit antenna whose efficiency is 90 percent, so that the cell phone may operate over the entire cell.
Given the function F(a,b,c,d)=a'b+ad'+ab' a) Design a minimum two-level NOR-gate network to realize the above function. b) Design a minimum three-level NOR-gate network to realize the above function.
Design (determine) the metallurgical channel thickness of an n-channel silicon JFET such that the pinch off voltage is -3.0V. The doping parameters are NA=3x1018cm-3 and Nd=2x101616 cm-3.
Box 1 contains 5 red, 6 white, and 9 blue balls. Box 2 contains 7 red, 8 white, and 4 blue balls. A ball is withdrawn at random from Box 1 and placed in Box 2. Then, a ball is taken at random from Box 2.
If the breakdown voltage increases with temperature at a rate of 40 mV/"C, find the break-down voltage of the diode at room temperature, assuming that the space-charge resistance is 10 C& independent of temperature.
An unknown semiconductor has a bandgap of 1.1eV and Nc = Nv. It is doped with 10^15 cm-3 donors where the donors fully ionized. Given that EF is 0.25 eV below Ec, calculate the concentration of electrons and holes in the semiconductor at 300 K and..
A four-pole, 450-kW, 4.6-kV SHUNT GENERATOR HAS ARMATURE AND FIELD RESISTANCES OF 2 AND 333 Ohms. The generator is operating at the rated speed of 3,600 r/min.
an electrical transformer dissipates heat equivalent of 3000 kW/h. the inlet and outlet temperatures of the cooling water are 55C and 15C respectively. calculate the mass of the cooling water in a minute.
Point charge 1.5{\rm \mu C} is located at x = 0, y = 0.30 {\rm m}, point charge -1.5{\rm \mu C} is located at x = 0 y = -0.30 {\rm m}. What are (a)the magnitude and (b)direction of the total electric force that these charges exert on a third point..
Assume that the Fermi energy level for a particular material is 6.25eV and that the electrons in this material follow the Fermi-Dirac distribution function. Calculate the temperature at which there is a 1% probability that a state 0.30eV
Use a 5nF capacitor to design a series RLC bandpass filter in series. the center frequency of the filter is 8kHz, and the quality factor is 2. perform the analysis in Pspice and graph the transfer function on the y axis vs.
Assume that a transmitter on Earth must communicate with a spacecraft on the Moon. Parameters are: Earth-based atenna gain=40dB Lunar receiving atenna gain=20dB Distance=386,000 Km Frequency= 3GHz Minimum lunar signal level = 100fW
A 0.2 kg plastic cart and 20 kg lead cart both roll without friction on a horizontal surface. Equal forces are used to push both carts forward a distance of 1 m, starting from rest. Is the kinetic energy of the plastic cart greater than, less than..
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