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A police K-band radar is operating, with transmit power of 1000 Watts and antenna gain of 300 in linear units. The radar unit is designed to detect a target with a radar cross-section (RCS) of 6 sq. meters and its receiver can detect a signal with a minimum power of 10 pico Watts. A car is travelling at 100 mph (or 160kph) towards the police radar unit. The driver is using an inexpensive radar detector unit that has an antenna gain of 10 in linear units and a sensitivity of 10 micro Watts. (a) What is the maximum range of the police radar unit? (b) How far away can the car's radar detector receiver detect the police radar? (c) Does the driver have enough time to react and avoid the ticket?
Consider an AlGaAs based heterostructure laser diode which has an optical cavity of length 200 microns. The peak radiation is at 870 nm and the refractive index of GaAs is about 3.7. What is the mode integer m of the peak radiation
Power Electronics - Diode, [Power electronics] The measured values of a diode at a temperature of 25 Degrees Celsius are: Vd=1V at Id=50A, Vd=1.5V at Id=600A. Determine (i) the emission coefficient n, and (ii) the leakage current.
Design a five section high pass lumped element filter with 1 dB equal-ripple response, a cut-off frequency of 1 GHz and an impedance of 50 Ohms. Plot the amplitude and phase response of the filter.
Prompt the user to enter a letter indicating Celsius or Fahrenheit C or c indicates that temperature entered is in Celsius. F or f indicates that temperature entered is in Fahrenheit.
What is the motor efficiency as operated?
Compute y(nT) iteratively for n=0, 1, 2, when, y(-T)=2, and x(nT) = u(n) Hint: the initial conditions are given for negative n. Shift the equation to the right to express x() and y() to eliminate all advances and end up with x(n), y(n)
Why is quality a difficult term to define. how can we improve our understanding of quality?
A three 120 - V power line is Y-connected. The three phase outputs are marked as a,b,c. The neutral is marked as n. The phase sequence is abc. It is connected to a balanced Y- connected load, with the impedance is 12 + j 9 omega.
A new semiconductor has Nc = 1019 /cm3 and Nv=5 x 1018, and Eg = 2eV. If it is doped with 1017 donors (fully ionized), calculate the electron, hole, and intrinsic carrier concentrations at 627K.
3) What factors started the decline in the nuclear power industry, and what events essentially ended new construction of nuclear power plants 4) What are three advantages of using AC power over using DC power
If a transformer has a turns ratio of 1:5 and a primary voltage of 20 V AC, what will the secondary voltage be?
Consider a communications channel with a passband of 3 kHz to 27.4 kHz. A modem will be connected to this communications channel and the modem will operate with a signaling rate that is 0.56 the maximum allowable signaling rate for this communicat..
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