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A) Assume that a transmitter on Earth must communicate with a spacecraft on the Moon. Parameters are: Earth-based atenna gain=40dB Lunar receiving atenna gain=20dB Distance=386,000 Km Frequency= 3GHz Minimum lunar signal level = 100fW What is the power required for the Earth transmitter?
B) Since the lunar atenna in A) is pointed at earth, it will "see" a temperature of about 290 K. The effective noise temperature of the lunar receiver referred to its input is 400 K and the IF bandwidth is 100 kHZ. Neglecting the losses., determine the system carrier-to-noise ratio (in dB) at the lunar receiver output.
C) A pulse radar system has a pulse repetition rate of 50 Hz and a pulse duration of 100 uS. What is the maximum unambiguous range (in km)?
D) For the radar system in C), determine the minimum measurable range E) The effective area of a certain antenna at 300 MHz is 1m^2. What is the absolute gain? F) What is the detected output S/N Ratio (in dB) for an AM receiver with 100% modulation?
Locate and specify an appropriate sensor if it is to operate at 120 vac as an input to a PLC. Create the ladder diagram program to accomplish the specified control.
You have a shortwave AM receiver (just an AM receiver that has the capability to receive signals in the FM frequency band) that receives an NBFM voice signal at some carrier frequency. You notice, however, that while the signal strength is maximiz..
Prepare an Excel graph showing the individual components and summated resultant waveform of the odd harmonic series resulting in an approximate square wave.
A 10kVA, 200/400V 50Hz single-phase transformer gave the following test results. O/C test: 200V, 1.3A, 120W, on l.v. side. S/C test: 22V, 30A, 200W on h.v. side. (a) Calculate the magnetizing current and the component corresponding to core loss
Determine the standing wave pattern for the voltage in the line. Express the result in real insantaneous form and simplify
Using the message signal m(t) = 1/(1+t^2) , determine and sketch the modulated signals for the following methods of modulation: (c) SSB modulation with only the upper sideband transmitted. (d) SSB modulation with only the lower sideband transmitted.
The cross section of a cottage 20 ft wide is an isosceles triangle. If the slope of a side is 1.75 and there is a second floor 9 feet above the ground floor,What is the angle at each tip of the cottage?
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.
1. What is Miller capacitance What is its role in High frequency amplifier design Label all the involved variables in the Figure below and derive an expression for the Miller effect capacitances (input and output).
For the discrete signals defined as the following: x[0]=4, x[1]=1, x[3]=-1, x[n]=0 for all other integers n. v[0]=1, v[1]=-2, v[2]=3, v[3]=-4, v[n]=0 for all other integers n. Compute the convolution x[n]*v[n] for n
Would you be willing to have a Smart Meter connected to your house and collecting your electric usage information and sharing it with your local utility company?
The power amplifier for a car stereo amplifier has a rated output power of 750 watts when operating at room temperature. Assuming a Class B amplifier with the maximum theoretical efficiency is used,
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