Problem 1.2 Indicate for eacn of the following signals whether it is periodie. If so, give the period N. (a) 1 m) = sin(37/4)n) (b) za[n] = e>(7«/8]n (d) ra(n) = con(2rn) (e) a(m) = con(37/7)n) + sin((dn/5)n).
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- Electronic wave theory Microwave ovens operate at a frequency of 2.45 GHz. Since the inner chamber of the furnace is made of stainless steel with σ = 1.2 × 106 S /m and µr= 500 (a) Determine the skin thickness. (b) According to the electric field ?s = 50∟0o ? /m at the surface of the conductor, the magnitude of ?s Draw the change of stainless steel as it progresses.A satellite at an altitude of 37654 km transmits a signal of 17 GHz to a ground station directly below it. The following data is given. • Total atmospheric losses = 40dB • Transmit antenna gain = 55dBi • Receiver antenna gain = 60dBi • Signal to noise ratio of received signal = 6dB • Receiver signal noise power = 25pW • Receiver sensitivity = -90dBW I. Calculate the power transmitted. II. Find the Fade Margin for the link and comment on your result.A rectangular waveguide is used to transmit power from a generator to a radar antenna. The guide has internal dimensions of 0.864 cm and 0.432 cm and operates at 23 GHz in TE10 mode. The transmitted power is 50 kW. Determine the magnitudes of the electric and magnetic field strengths in the guide. NEED A NEAT HAND WRITTEN SOLUTION , NO CHAT GPT
- Type your question here At frequencies of 1 , 100 , and 3000 MHz , the dielectric constant of ice made from pure water has values of 4.15 , 3.45 , and 3.20 , respectively , while the loss tangent is 0.12 , 0.035 , and 0.0009 , also respectively . If a uniform plane wave with an amplitude of 100 V / m at z = 0 is propagating through such ice , find the time - average power density at z = 0 and z = 10 m for each frequency .A 350 km transmission line has the following parameters: z = 0.0195 +j0.35 Ω/km y = j4.5 μS/km If the load served by the line is 300 MVA, with an fp of 0.8(-), at a voltage of 100√3KV say: 6. The value of the incident and reflected wave, as well as the total voltage, at a point 200 km away from the extreme load. 7. The voltage and current at the emitting end. 8. What would be the percentage error in the magnitude of the voltage VS if it is calculated with the lossless line model? lossless line model? Note that the accurate value is the one that takes losses into account.a) A 50 cm length 50 ohms coaxial cable is terminated with an antenna having an impedance of 100 + j150 ohms to be operated at 3.5 GHz. The cable is made with inner and outer conductor and dielectric (relative permittivity = 2.56) in between the two conductors. (i) Determine the load reflection coefficient. (ii) Find the standing wave ratio (SWR). (iii) Determine the input impedance of the line. (iv) What can you do to reduce the load reflection coefficient? The antenna in Q.(a) is to be matched to the said 50 Ω coaxial line using single series stub tuner. You are requested to find two solutions using open circuited stub using Smith Chart. (i) Determine the normalized load impedance and plot on the Smith Chart? (ii) Find the two possible distance of the stub from the load. (iii) Find the two possible length of the stub. (iv) Sketch the circuits
- 2.5. Find the half-power beamwidth (HPBW) and first-null beamwidth (FNBW), in radians and degrees, for the following normalized radiation intensities: (a) U (0) = cos 0 cos(20) (b) U(0) = cos? e cos (20) (c) U (0) = cos(0) cos(30) (d) U(0) = cos²(8) cos²(30) (e) U (8) = cos(20) cos(30) (f) U (8) = cos²(20) cos (30) (0 <0 < 90°, 0 <ø S 360°)Q1) The maximum peak to peak value of an AM wave is 52 volts and its frequency is 58000000. The peak to peak value of the modulating signal is 13volts and its frequency is 21000. If it is transmitted through an antenna with an internal resistance of 93ohms, Find the following: 1. modulation index m 2. percentage modulation %m 3. Amplitude of carrier Vc 4. Total power Pt 5. Carrier power Pc 6. Power in side bands Psb 7. Power in upper side band Pusb 8. Total transmitted current It 9. Carrier current Ic I want to solve Question 6, 7, 8 and 9A surface search radar has the following characteristics:i. Frequency = 5 GHz (C-Band - vertical polarization)ii. Peak power = 5 kWiii. Circular phased-array – diameter = 1.00 metersiv. Noise Figure = 2 dBv. Total System Losses = 10 dBvi. Duty factor = 5%vii. Dwell length or processing time = 1.0 msviii. Bandwidth = 1 MHz Using Matlab Plot the SNR (in dB, y-axis) versus Range (from 1 km to 50 km) for a target with a 1m2 RCS. Assume maximum antenna gain towards the target, antenna gain is the same fortransmit and receive, and unity propagation. If a SNR of 15 dB is required to detect the target, atwhat range is the target first detectable?
- 1.) A carrier with an RMS voltage of 2V and a frequency of 1.5 MHz is modulated by a sine wave with a frequency of 500 Hz and amplitude of 1 Vrms. Write the equation for the resulting signal in its basic and extended form. 2.) A certain transmitter radiates 9 kW with the carrier unmodulated, and 10.125 kW when the carrier is sinusoidally modulated. If another sine wave corresponding to 40% modulation, is transmitted simultaneously, determine the total radiated power.A. If Satellite with a radius of 5.3m trans mitted a message at the frequency of 1.3 MHz to earth station. Determine;i. The wavelength, and time, in hour of the transmissionii. The centrifugal force of the satelliteiii. The attenuation of the transmission B. The wavelength of a signal transmitted at 1000MS-1 is 700M. Determine the period of the transmissionC. Analyze the conditions that can lead to satellite path diversityD. Explain handoff and discuss three types of satellite handoffThe phase velocity and phase lag of the magnetic field behind the electric field of a uniform plane time-harmonic EM wave of frequency f = 10 GHz and rms electric field intensity Erms = 15 V/m propagating through ice are found to be vp = 1.73 x 108 m/s and Φ = 10-4 rad, respectively. Compute (a) the relative permittivity and loss tangent of ice, (b) the complex propagation constant, and (c) the time-average Poynting vector of the wave.