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A 28 GHz radio link uses a tower-mounted reflector antenna with a gain of 32 dB and a transmitter power of 5 W.
(a) Find the minimum distance within the main beam of the antenna for which the U.S-recommended safe power density limit of 10 mW/cm2 is not exceeded.
(b) How does this distance change for a position within the sidelobe region of the antenna if we assume a worst-case sidelobe level of 10 dB below the main beam?
(c) Are these distances in the far-field region of the antenna? (Assume a circular reflector, with an aperture efficiency of 60%.)
Genetic algorithms represent an optimization approach where a search is made to "evolve" a solution algorithm, which will retain the "most ?t" components in a procedure that is analogous to biological evolution through
A terminated transmission line with Z0 = 60 ohm has a reflection coefficient at the load of = 0.4 60. (a) What is the load impedance (b) What is the reflection coefficient 0.3 away from the load (c) What is the input impedance at this point
build a home security system circuit using this program. the system must include a door sensorwindow sensor smoke
What is the circuit configuration of op amp 2 , trnsfer function, of E'/Ei, transfer fucntion of whole circuit, and is this a PI, PID, or PD circuit
A stream of air at 80 °F and 1.2 atm absolute flowing at a rate of 200 ft3/h is blown through ducts that pass through the interior of a large industrial motor. The air emerges at 500 °F. Calculate the rate at which the air is removing heat generat..
A storage tank has a Diameter of 20ft and a height of 10ft. The output volumetric flow from this tank is given by fout(t)=2h(t) where h(t) is the height of the liquid in the tank. At a particular time the tank is at steady state with an input flow..
Consider a 256KB, 4--way set associative cache using 64--byte lines and LRU replacement using counters). The cache uses MESI cache coherence protocol. Addresses are 32--bits. Express your answers in bytes or KB kilobytes).
smoke detector was loaded with 0.2u Curie when purchased 20 years ago. The isotope is Am-241with a half-life of 426 years. How much remains today
If the above electrode is used tomeasure the pH of arterial blood in vivo, and if the subject isbreathing at 0.5Hz, in the steady state how much will the true amplitude of the oscillation in pH be attenuated at the output of the pH electrode
what are some good examples of test equipment that is available for use in diagnosing and repairing communications
- Describe in your own words, what "the tarp" or "the landscape" represents - what do the hills and valleys convey
The question considers the design of a 8x1 multiplexer using gates. Assume the data inputs are I0,...,I7 and the select inputs are S2, S1 and S0. (a) Write a sum-of-products expression for the 8x1 multiplexer.
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