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Question about Electronic Communications1. A microwave system requires a +4-dBm audio level to provide 100% modulation. Determine the voltage level required if this is a 600 ohm audio system.2. Determine the noise produced by a 500 ohm resistor at 26 degrees Celcius over a 2 MHz bandwidth.3. Consider an amplifier with an output of 2 mV rms and noise 0.76 mV rms. What is the signal to noise ratio? Express it as an absolute ratio and in dB.4. Suppose that a series RLC circuit has R = 25 Ohm, L = 2 mH, and C = 0.8 microF. Compute the resonant frequency in kHz.5. A filter has a bandwidth of 20 kHz and a peak output at 300 kHz. What is Q?6. Calculate the percent modulation if the maximum p-p carrier in V is 200 and the minimum p-p is 40 V.7. A 750 W carrier is modulated at an 85% level. Find the total transmitted power.8. Consider a spectrum analyzer and suppose that V1 = 5 V, V2 = 0.1 V, V3 = 0.4 V, and V4 = 0.2 V. What is the total harmonic distortion?9. For a certain AM signal, the fundamental is 3 V. If a harmonic at 4 kHz is 0.07 V, what is the relative harmonic distortion?10. A 1 MHz 40-V peak carrier is modulated by a 5-kHz intelligence signal so that m = 0.7. This AM signal is fed to a 50 Ohm antenna. Calculate the power of each spectral component fed to the antenna.
In a typical mobile communications base station (or cell site), a radio frequency (RF) signal is amplified in the base station and then sent (over cable) to the antennas at the top of the tower.
A radio receiver has a noise power N = kTB watts, with T = 100 K and B = 1.0 MHz. The value of k is 1.38 x 10^-23 J/K. What is the noise power in dBW?
Utilizing the rat stereotaxic atlas in the course materials, devise a surgical plan for implanting a Michigan type array
Bandwidth, In a given communications system, one signaling element is used to represent 64 bits. The required data rate is 1.789 Mbps.
Modulating Radio Frequency Carriers to Carry Digital Data, Digital radio transmission requires the use of a carrier wave which is modulated by the digital data.
Determine the Voltage across the electrical model of a cell membrane in a nerve cell
Surface integral for jet engine. The air-gas exhaust velocity from a jet engine varies linearly from a maximum of 300 m/s at the center of the circular exhaust opening to zero at the edges. If the exhaust diameter is 1.6 m, find thq exhaust flow.
Rain affects the downlink from the satellite and the overall CNR ratio in the receiver falls by 6.0 dB to 13.0 dB. What is the bit error rate and the time between errors now?
Step-down transformer
Determine the range of values of K such that the system is stable for s(s²+4s+10)+ k (s+5)=0
Shielding Effectiveness with copper and steel at equality, Determine the frequency at which two 1 mm thick shields, one made of copper and the other of steel
Consider a communications channel with a passband of 3 kHz to 27.4 kHz. A modem will be connected to this communications channel and the modem will operate with a signaling rate that is 0.56 the maximum allowable signaling rate for this communicat..
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