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A space mission is launched and the spacecraft has been sent with a half-wave dipole antenna operating at a frequency f. The ground station has an identical antenna to communicate to the spacecraft. After a period of time it is noticed that communication from the space craft is lost when it is at a certain distance, R, from the ground based antenna. As a solution to this, the ground station antenna is replaced with an antenna of 100dB gain, transmitting the same amount of power. Calculate the distance, D at which communication from the space craft will be lost again? Assume both antennas are ideal.
In this project we will consider the control of a synchronous generator supplying electricity to the grid.
Create a program using AsmIDE, which utilizes the Fox 11 68HC11 microcontroller board: Speech timer where max time is 5 minutes Use the switches for:
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.
Determine a suitable sampling frequency. Design a notch filter to remove the 50Hz component, paying particular attention to any assumptions you have made in the design.
Frequency Range, Local Oscillator Frequency, Image Frequency, and Attenuation, A radio receiver for the AM broadcast band covers the frequency range 550 to 1600 kHz. The IF frequency is 455 kHz and the local oscillator is above the received signal..
A temperature sensor has a static transfer function of 0.15 mV/C° and a time constant of 3.3 s. If a step change of 22° to 50° C is applied at t=0, find the output voltage at 0.5 s from t=0s to t=10s
Consider a direct sequence spread spectrum (DSSS) system attempting to transfer data. The DSSS system has a data rate of 2 Kbps (2 thousand bits/sec) which is spread to 2 Mcps
Find the impulse response fpr the filter? How many nonzero terms does the impulse response contain?
A battery is charged. The relationship between the charging current, i amperes and the time, t hours passed, is given by the formula:
AC Analysis Gain at Midband (with bypass capacitor in circuit) Connect the bypass capacitor using the switch.
What is the BER at the output of the receiver in clear air conditions, and the average time between errors? Give your answer in years, days, or hours as appropriate. Assume an implementation margin of 0.5 dB.
Using the Nth order term only of the transfer polynomial, find the Nth order relationship for the Nth order products.
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