A given FM transmitter is modulated with sinusoidal input m(t) = 9 cos 500nt volts, and the modulation index is 5.5, and the unmodulated carrier power is 10W across 520 resistive load. Determine: (a) the modulation sensitivity kf. (b) the load power. (c) The ratio of the power in the sum of the 3 and 4th order sidebands to the power in a sidebands.

A given FM transmitter is modulated with sinusoidal input m(t) = 9 cos 500nt volts, and the modulation index is 5.5, and the unmodulated carrier power is 10W across 520 resistive load. Determine: (a) the modulation sensitivity kf. (b) the load power. (c) The ratio of the power in the sum of the 3 and 4th order sidebands to the power in a sidebands.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Frequency Modulation

Frequency modulation is a method or process of encoding the data of a specific signal (analog or digital) by modulating the carrier wave frequency according to the frequency of the modulated signal. Modulated signals are nothing more than information or data that should be conveyed after being converted into electronic signals.

Question

100%

A given FM transmitter is modulated with
sinusoidal input m(t) = 9 cos 500nt volts,
and the modulation index is 5.5, and the
unmodulated carrier power is 10W acrss
520 resistive load. Determine:
(a) the modulation sensitivity kf.
(b) the load power.
(c) The ratio of the power in the sum of the 3rd
and 4th order sidebands to the power in all
sidebands.
(d) The required channel bandwidth for the
transmitted signal.

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