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Referring to (A.37) and the accompanying discussion, suppose that two calibrated noise sources have effective temperatures of 600 K and 300 K.
a. Obtain the noise temperature of an amplifier with these two noise sources used as inputs if the difference in attenuator settings to get the same power meter reading at the amplifier's output is 1 dB, 1.5 dB, or 2 dB.
b. Obtain the corresponding noise figures.
Careful measurements in a certain non-magnetic (µ = µ0) medium reveal that the penetration depth of a 100 MHz uniform plane wave is 4 meters and the wavelength is p / 6 meters.
A signal source is represented by a Thevenin equivalent cricuit with a source resistance Rs = 20k is connected directly to a load resistance Rl = 2k. What is the power gain in dB
1) Draw the schematic for a circuit that will function as indicated by the Boolean expression: X=A'+B'+C' 2) Why are the IC's used in this lab called SSI? What other terms are used for ICs?
Design a digital circuit that can be attached to a school bill which can work automatically from 7:00 AM to 12:45 PM, and it has the following features: 1- Rings for 5 seconds. 2- Start ringing 7:00 AM to announce for the field gathering. 3- Rings 7:..
What are the consequences of stakeholder ethics with regards to organizational goals and productivity?
Select two different applications that use electrical wiring.
Compare the mmf drop across the air gap to that across the rest of the magnetic circuit. - Discuss your results using the value of µ for each material.
Charge density required to produce a given field. A charge density is distributed throughout the free space. Assume the charge density is uniform in the y and z directions. The electric field intensity everywhere is E =il0-141:rl. Calculate the..
How hot would a conventional pipe have to get to burst and why. Does it vary according to what material the pipe is made of. Which are the strongest. What are weak ones
If the products are rounded as described in part (a), the output can be represented as yˆ[n] = y[n] + f [n] where y[n] is the output owing to x[n] acting alone, and f [n] is the total output due to all the noise sources acting independently. Deter..
The charge carried by an electron is ?1.60×10?19 C. Suppose that an electron moves through a voltage of 120V from the negative polarity to the positive polarity. How much energy is transferred Does the electron gain or lose energy
A crucial step in showing that the waves in a fluid are necessarily longitudinal was the integral in (16.142). For an arbitrary function f (ξ), with derivative f'(ξ),
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