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- According to the image answer the following questions. a) Is this system stable or unstable? (Justify your answer by giving reason) b) From H(z) , obtain an expression for H(ejw) , the frequency response of the system?Please I need a 100 % correct answer some websites are answering the questions by using the frequency and some by using the effective aperture An antenna transmits a power of 2W from an antenna of 20db, towards a receiver located 40 km from the receiver, calculate the power received by an antenna of effective antenna 10 m^2 if the operating frequency is 11 KHzA certain antenna has a gain of 7 dB with respect to an isotropic radiator. What is its effective area (in m^2) if it operates at 200 MHz? Round off your answer into two decimal places.
- A satellite is located at the 35,000 Km above the earth surface. It radiates a 10 W of power from antenna. The earth antenna has 17 dB gain. The satellite operates at 11 GHz frequency. The parabolic receiver on earth station has 52.5 dB gain. Calculate received signal powerAn FM transmitter delivers, to a 75-Ohm antenna, a signal of v = 1000 sin ( 10^9t + 4 sin 10^4t). Calculate the carrier and intelligence frequencies, power, modulation index, deviation, and bandwidth.s(t) = 2 sin(180πt) + 3 cos(220πt) Calculate the frequency domain representation of the pre-envelopeS+(f)ofs(t)
- Derive F{sin ω0t}.You have a broadcasting station on the frequency of 107.3 MHz and radiate with a power of 230 KWatt with a 3 dBi antenna, if we have a receiver 50 km away with a receiving power of -112.28 dBm. What will be the power gain expressed in decibels of the receiving antenna.The rms antenna current for an AM transmitter increases by 15% over the unmodulated value when sinusoidal modulation applied. Find the depth of modulation. Use 4 decimal places for the final answer.
- A parabolic reflector antenna with a diameter of 22 meters operates at frequency of 5GHz. calculate the power gain, G (dB) of the antenna if the aperture efficiency is 50%.An FM transmitter delivers, to a 75-Ohm antenna, a signal of v = 1000 sin (10^9t + 4 sin 10^4t). Calculate the intelligence frequency, power, modulation index, deviation, and bandwidth.Answer the following on a clean sheet of paper. Take a photo of your answer sheet then upload here. Assuming that an oscilloscope displays a Vmax of 5.22V and Vmin of 1.33V. Calculate the percentage of modulation. (5 points) Three (3) AM broadcast stations are spaced at 18 kHz, beginning at 73 kHz. Each station is allowed to transmit modulating up to 6 kHz. Compute for the upper and lower sidebands of each station and plot it in the frequency domain. (15 points) Given a Vmax of 7.45V and a modulation index of 0.691, calculate for Vmin. (5 points) A station is given a carrier frequency of 88 kHz. Having a modulating frequency of 12 kHz, compute for the upper and lower sidebands of the station. (5 points)