An FM signal, EM = 2000 sin(27 x10*t+2sin z×1oʻt) is applied to a 50N antenna. Determine: - The carrier frequency The transmitted power - Modulation index

Q: (A): Consider the frequency modulated signal s(1) = 10 cos[(10")mt + 5 sin 2#(10°)4] Calculate the:…

A: Thank you for the question. As per our policy I will be answering only first question (A). For the…

Q: if the maximum dimension of an antenna is 0.15 m and the frequency is 1GHZ the distance 2 m…

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Q: by Communications Systems  Q: A certain transmitter radiates 9kW with the carrier unmodulated, and…

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Q: A. The output signal from an AM modulator is: SAM(1) = 20 COS (1200 10' n)t + 6 COS (1208*10'n)t + 6…

A: We need to analyse the given signal .

Q: Q2 Consider a message signal m(t) = 2 сos(2π × 10t) + 4 cos(2π × 15t) + cos(2π x 40t). The message…

A: Amplitude modulation: As per our guidelines we are supposed to be the first three questions only.…

Q: The propagation number k is inversely proportional to the wavelength X. Select one: O True O False

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Q: A 93 MHz carrier is frequency modulated by a 9 kHz sinewave, resulting in a frequency deviation of…

A: Given data, Carrier frequency fc=98 MHz Modulating frequency fm=9 kHz Frequency deviation ∆f=53 kHz…

Q: Consider the periodic message signal x(t) shown below, where the period is 3 sec: x(t) 1 2 5 1 3 6 t…

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Q: A. An FM signal has the form S(t) = 10 Cos (2 a fc t+ 4 Sin (2 r fm t)) Where fc = 200 MHz, and fm =…

A: In the question,  A FM signal s(t) = 10cos(2πfc t+ 4sin(2πfm t))  fc = 200Mhz and fm = 5Khz…

Q: For a FM signal v(t) = 15 cos ( 10 * 108t + 10 sin 1220t), calculate 1. Carrier frequency

A: Given information: The expression of the frequency modulated signal is given as…

Q: A radio station transmits the signal s(t) = Vc sin [wct + mf sin wmt] where Vc = 11 V wC =…

A: This question is based on the frequency modulation (FM) Vc = 11 V    mf = Modulation index  wm =6465…

Q: A radio station transmits the signal s(t) = Vc sin [wct + mf sin wmt] %3D where Vc = 19 V %3D wc =…

A: As per our policy we can provide solution to first three questions only. As we have given : VC=19…

Q: Q3. An AM transmitter has the following modulated signal: p(t) = A, cos(A2nt) + A3 cos(A4nt)…

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Q: A. An FM signal has the form S(t) = 50 Cos (2 a fe t + 8 Sin (2 z fm t)) Where f= 100 MHz, and fm =…

A: In the question,  A FM signal s(t) = 50cos(2πfc t+ 8sin(2πfm t))  fc = 100Mhz and fm = 10Khz…

Q: 1. A certain transmitter radiates 10 kW with carrier unmodulated and 12 kW when the carrier is…

A: Modulation is process by which some properties of carrier signal is varied according to modulating…

Q: A satellite at an altitude of 1000km transmits a signal to a ground (b) station directly below it.…

A: “Since you have asked multiple questions, we will solve the first question for you. If youwant any…

Q: A. An FM signal has the form S(t) = 20 Cos (2 a fc t+ 12 Sin (2 n fm t)) Where fc = 400 MHz, and fm…

A: In the question,  A FM signal s(t) = 20cos(2πfc t+ 12sin(2πfm t))  fc = 400Mhz and fm = 20Khz…

Q: A. An FM signal has the form S(t) = 10 Cos (2 a fe t+ 4 Sin (2 n fm t)) Where fc = 200 MHz, and fm =…

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Q: An AM transmitter radiates 9 kW of power when the carrier is unmodulated and  10.125 kW when the…

A: We know that for a single-tone sinusoidal amplitude-modulation the total power is expressed as

Q: 3- An AM signal has the form S(t) = [20 + 2 cos 3000nt + 10 cos 6000nt] cos 2n f.t where f=10S Hz.…

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Q: 2. Consider an AM signal s(t)=20(1+0.9cos 210*t)cos 2110°t. The signal is radiated into free space…

A: St=201+0.9 cos 2π106tThe standard AM is given bySt=Ac1+Kamtcos2π fctsol:  The modulation index…

Q: A. An FM signal has the form S(t) = 10 Cos (2 a fc t+ 4 Sin (2 n fm t)) Where fc = 200 MHz, and fm =…

A: In the question,  Now A FM signal s(t) = 20cos(2πfc t+ 12sin(2πfm t))  fc = 400Mhz and fm = 20Khz…

Q: 1.1 0.9 Jo 0.8 0.7 0.6 0.5 J4 Js 0.4 0.3 0.2 0.1 1. 10 1 -0.1 -0.2 -0.3 -0.4 -0.5 A given FM…

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Q: What is the total average power for a commercial AM transmitter with an unmodulated carrier power of…

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Q: 1) Determine the input power in dBm received by an antenna with a gain of 45dB if the measured power…

A: As per the guidelines of Bartley we supposed to answer first question only since remaining question…

Q: A certain city has an area of 1,300 square miles and is covered by a cellular system using a…

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Q: 1. An FM signal , 2000 sin(2n x 10°t + 2sin nx 10°t), is applied to a 50 ohms antenna. Determine:…

A: We are authorized to answer three subparts at a time, so we are answering the first three subparts,…

Q: QI: the carrier signal is represented as, x(t) = 2cos(10TTT), find 1- Its frequency component. 2-…

A: The frequency spectrum of an electrical signal is the distribution of the amplitudes and phases of…

Q: An antenna has an impedance of An un modulated AM signal produces a current of 4.8 A. The modulation…

A: impedance R= 1 ohm  unmodulated AM signal current of 4.8 A. The modulation ma= 90 percent Calculate…

Q: In an amplitude modulation system, the message signal is given by Fig.below and the carrier…

A: Since you have asked multiple subparts and not specified which one to answer. I will answer the…

Q: [Q1] The r.m.s. antenna current of an AM transmitter increased by 18% over the unmodulated value,…

A: We need to find out total transmitted power and efficiency of Amplitude modulation .

Q: A microwave generator at 1.2 GHz supplies power to a microwave transmission line having the…

A: Given: Frequency of supply, f=1.2 GHz Microwave transmission line having R=0.8 Ω/mG=0.8 mS/mL=0.01…

Q: The optical power, after propagating through a fiber that is 7 km long is reduced to 30% of its…

A: Consider the given data: The length is given as 7 km The optical power is reduced to 30% of its…

Q: Consider an FM signal given by the expression f(t) = cos[2лft + ß₁ sin(2πf₁t) + ß₂ sin(2Ã₂t)]. Find…

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Q: 2. Given the signal x(t) = 12 volts, -1<t<3 = 0, otherwise (a) Determine the energy content Exe of…

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Q: 3 (b) A 70 0 transmission line of length 'I' is open circuited. If the input impedance is -j60 N,…

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Q: A. An FM signal has the form S(t) = 20 Cos (2 a fe t+ 12 Sin (2 z fm t)) Where fc = 400 MHz, and fm…

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Q: Q2: In a direct FM generation, it was used Hartly VCO. Given the capacitance constant as K_c=120n/F.…

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Q: A telephone line has R= 30 /km, L = 100 mH/km, G = 0, and C = 20 µF/km. At f = 1 kHz, obtain: The…

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Q: 1. An FM signal , 2000 sin(2n x 10®t + 2sin Tx 10°t), is applied to a 50 ohms antenna. Determine:…

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Q: Q5: A directional coupler has the scattering matrix given below. Find the return loss, coupling…

A: The given scattering matrix is shown below:…

Q: 2. An AM signal can be represented as: v=(15+3 Sin(2n×5×10°t))×Sin(2r×0.5×10°t) volts What are the…

A: The AM signal is represented in the given problem: v=15+3sin2π×5×103t×sin2π×0.5×106t voltsThis can…

Q: 5. Given m(t) = 2 cos 40000nt volts, kg = 6n x 10' Hz/volt, Use Carson's rule to find the FM…

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Q: A radio station transmits the signal s(t) = Vc sin [wct + mf sin wmt] %3D where Vc = 11 V wC =…

A:

Q: A radio station transmits the signal s(t) = Vc sin [wct + mf sin wmt] where Vc = 16 V wC =…

A: From the given data we can calculate all the required values. They mentioned the amplitudes of m(t)…

Q: An AM transmitter radiates 9 kW of power when the carrier is unmodulated an (10.125 kW when the…

A: We need to find out the modulation index and total power transmitted

Q: The radiation intensity of the major lobe of an antenna is represented by U = 80 cos (0/2) for (0 <…

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Q: Q1: the carrier signal is represented as, x(t) = 2cos(10nt), find 1- Its frequency component. 2- Its…

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Q: Consider the periodic message signal x(t) shown below, where the period is 3 sec: x(t) 1 ... ... 2 5…

A: Envelope detector: AM signal output: Vin(t) = A(1+Kam(t))cos(wct) Where m(t)=x(t) = message signal.…

Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors.  The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.