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The atmosphere does not have a definite thickness since it gradually thins with altitude, with a consequent decrease in attenuation. However, if we use a simplified "orange peel" model and assume that the atmosphere can be approximated by a uniform layer of fixed thickness, we can estimate the background noise temperature seen through the atmosphere. Thus, let the thickness of the atmosphere be 4000 m, and find the maximum distance to the edge of the atmosphere along the horizon, as shown in the figure below (the radius of Earth is 6400 km). Now assume an average atmospheric attenuation of 0.005 dB/km, with a background noise temperature beyond the atmosphere of 4 K, and find the noise temperature seen on Earth by treating the cascade of the background noise with the attenuation of the atmosphere. Do this for an ideal antenna pointing toward the zenith, and toward the horizon
A voltage regulator circuit uses a Zenerdiode that exhibits a total voltage of 5.2 V at 20 mA and has aresistance Rz = 20 W. The regulator operates froma 10 V supply and has a 1 kW load. A) Use the node voltage method at the output node to derive a..
Write a function that converts an input of some integer number of nickels into outputs of integer numbers of dollars, quarters, and nickels. Do not write a main function. Your function does not do cin or cout. Your function will have four paramete..
Using the expression relating the rate at which current changes in an inductor to the voltage produced at it, find the voltage across the inductor when a switch supplying 7.9 A to a 2.4 mH inductor is suddenly opened.
For a particular inverter design using a power supply VDD with VOL = 0.2VDD, VOH = 0.6VDD, VIL = 0.4VDD, and VIH = 0.3VDD. In order to maintain noise margins of at least 0.15V for both noise margin high (logical 1) and noise margin low (logical 0), w..
For the Current and Voltage equation shown below, What are the amplitude, phase and frequency of the signals. Does Currentlead or lag voltage and by how much is(t) = 57.3 cos (37[rad/sec]t + 37.3o) [A]
Find H[k], the 10 point DFT of h[n] and compute the output response of the system y[n], 0 ≤ n ≤ 4, using the convolution sum.
Design an RC-Low Pass Filter with cutoff frequency at fc=0.5GHz and plot its frequency response and design a parallel resonance circuit with resonance frequency of 30kHz and bandwidth of 20kHz and plot its frequency response.
a transconductance amplifier with ri 2 komega gm 40 mav and ro 20komega is fed with a voltage source having a
Discuss the properties and practical applications of the following electrical engineering materials : (a)Carbon and graphite (b) copper
At a distance of 300 m from an antenna operating at 5.8 GHz, the radiated power density in the main beam is measured to be 7.5 × 10-3 W/m2. If the input power to the antenna is known to be 85 W, find the gain of the antenna.
A switch-tail counter (also called twisted ring counter, Johnsoncounter) uses the complement of he serial output of a right shiftregister as its serial input. a) Starting from an initial state of 000, list the sequence of the states
What's the number of ADC channels on a PIC24 Microcontroller
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