2. We wish to transmit the information signal vm=5sin (2x6,000t) V. a) Calculate the wavelength of the given signal. b) Would it be practical to directly transmit this information signal using an antenna? Why/why not? c) Suppose a carrier signal of vc = 10sin (2x250,000t) V is amplitude-modulated by the information signal given above. Sketch and label the frequency spectrum (i.e., the frequency domain representation) of the baseband signal, the carrier signal and the AM signal (three separate sketches are required). d) What is the bandwidth of the AM signal?

2. We wish to transmit the information signal vm=5sin (2x6,000t) V. a) Calculate the wavelength of the given signal. b) Would it be practical to directly transmit this information signal using an antenna? Why/why not? c) Suppose a carrier signal of vc = 10sin (2x250,000t) V is amplitude-modulated by the information signal given above. Sketch and label the frequency spectrum (i.e., the frequency domain representation) of the baseband signal, the carrier signal and the AM signal (three separate sketches are required). d) What is the bandwidth of the AM signal?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

4- An 80 MHz carrier is -1 frequency modulated by a sinusoidal signal of 1V amplitude and the frequency sensitivity is 100 Hz/. Find the approximate bandwidth of the FM waveform if the modulating signal has a frequency of 10 .kHz.
If we consider the resistor, capacitor and inductor as the load connected to the twovoltage sources, at which range of frequencies can the load be considered capacitive(two decimal accuracy required)?
Computer aided design has become a common practice for antenna designers. Give two examples of industry standard antenna design software.
A transmitter with a carrier power of 10 W at a frequency of 25 MHz operated into a 50 ohms load. It is modulated at 60% by a 2 kHz sine wave. (a) Sketch the signal in the frequency domain. Show power and frequency scales. The power scale should be in dBm. (b) What is the total signal power? (c) What is the RMS voltage of the signal?
Problem 4: Calculate signal to noise ratio at the receiver output (So/No in dB) for the FM signal whose first order harmonic power is 33.6 Watts. The received noise is assumed to be white with two sided power spectral density of = 10-8W/Hz. Assume the FM signal bandwidth is 80 KHz (using Carson's formula) and the message signal is m(t) = cos(20000nt).
Derive the array factor equation for uniform and non-uniform planar array antenna.
Investigate the role of beamforming and beamsteering in wireless communication systems, and their impact on signal coverage and quality.
An FM modulator has a carrier frequency of 200 MHz, is frequency modulated by a sine wave signal at a frequency of (fm= 15 kHz). The resultant FM signal has a frequency deviation of ( Af= 45 kHz). (a) Find the carrier frequency swing of the FM signal. (b) Determine the highest and lowest carrier frequencies. (c) Calculate the modulation index for the wave? (d) Sketch, approximately to scale, the magnitude spectrum of the modulator output. Show all frequencies of interest. (e) Calculate the bandwidth occupied by this FM signal? Modulation Sideband index Carrier 1 2 4 5 6 8 10 11 12 13 14 15 16 0.00 1.00 0.25 0.98 0.12 0.5 0.94 0.24 0.03 1.0 0.77 0.44 0.11 0.02 1.5 0.51 0.56 0.23 0.06 0.01 2.0 0.22 0.58 0.35 0.13 0.03 2.41 0.52 0.43 0.20 0.06 0.02 2.5 -0.05 0.50 0.45 0.22 0.07 0.02 0.01 3.0 -0.26 0.34 0.49 0.31 0.13 0.04 0.01 4.0 -0.40 -0.07 0.36 0.43 0.28 0.13 0.05 0.02 5.0 -0.18 -0.33 0.05 0.36 0.39 0.26 0.13 0.05 0.02 0. 19 0.09 0.03 0.01 0.25 0.13 0.06 0.02 5.53 -0.34 -0.13 0.25 0.40…
Q6) An angle-modulated signal with carrier frequency @ =27(10°) is described by the equation. PEM = 10 cos(@t + 0.1 sin 2000z) 1) Find out the message signal if the signal has been angle modulated. Assuming k=1 2) Find out message signal if the signal has been frequency modulated. Assuming kF1000.
answer #4
P3: A signal modulated at 2 MHz carrier is described by the ecuación 10 cos (2πfc + 8 cos (6000πt)). A)Determine maximum frequency deviation B) If the signal is passed through a pass-swing filter centered to the carrier frequency with A 10 kHz bandwidth. Determine the transmitted power of the filter output signal.
Problem 2 An AM signal has the form gam (t) = [50 + 40 cos(1000t)] cos(2nf.t) %3D where f. = 5 kHz. (a) Sketch the spectrum of gAm (t). (b) Determine the power in each of the frequency components. (c) Determine the modulation index. (d) Determine the sidebands' power, the total power, and the ratio of the sidebands' power to the total power. (e) Find the power efficiency.