A preselector and an amplifier stage make up the RF portion. The RF amplifier determines the receiver's sensitivity. Because the RF amplifier is the first active device a received signal encounters, it is the principal source of noise and hence a major component in establishing the receiver's noise figure. Depending on the desired sensitivity, a receiver can have one or several RF amplifiers, or none at all. EXCEPT FOR ONE, there are several advantages to using RF amplifiers in a receiver. Select your answer. Image-frequency rejection is improved. Greater gain, therefore improved sensitivity High sensitivity and fidelity Enhanced signal-to-noise ratio

A preselector and an amplifier stage make up the RF portion. The RF amplifier determines the receiver's sensitivity. Because the RF amplifier is the first active device a received signal encounters, it is the principal source of noise and hence a major component in establishing the receiver's noise figure. Depending on the desired sensitivity, a receiver can have one or several RF amplifiers, or none at all. EXCEPT FOR ONE, there are several advantages to using RF amplifiers in a receiver. Select your answer. Image-frequency rejection is improved. Greater gain, therefore improved sensitivity High sensitivity and fidelity Enhanced signal-to-noise ratio

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

In the AM in the figure; a) Modulation index b) Information and Carrier amplitude c) Information and carrier frequencies d) Sideband and total powers e) Calculate the yield f) Draw the frequency spectrum?
What are the key considerations in designing electrical circuits for high-frequency applications, such as radio frequency (RF) circuits?
answer all A - Explain the relation of MOSFET input current and input impedance and their effect on the functionality of the device. B- Explain how to increase the efficiency of the solar cells (PV cells) through the integration of antennas. C- List three conditions need to be considered to choose a MOSFET for switching applications.
The instantaneous value of the modulating signal to and FM modulator is -2V, sensitivity kf = 25 kHz/V and operating at a carrier frequency of 88 MHz. determine the output frequency of the modulator. *
In ............. type of test signal ,the signal will have high magnitude at one time .
Without Rin, how should I find Rf in a Non-Inverting Amplifier?
A channel having a bandwidth of 1 kHz, the power of signal is 10 W and the power of noise is 5 W. Determine the channel capacity. Or: A channel having a bandwidth of 1 kHz and Signal to Noise Ratio (SNR) is 2. Determine the channel capacity.
5. What is the approximate frequency of the modulating signal having a bandwidth of 15 kHz and a frequency deviation of 6 kHz?
(i)Calculate the modulation indexes and sketch the output spectrums for both modulators.(ii) Analyze the modulation indexes and the bandwidth if the modulating signal frequencyfor both modulators changed to 1 kHz. Sketch the output spectrums.
Q2. For the scheme shown in Figure Q2, i. Draw the spectrum of the baseband signal (multiplexer output) for the multiplexer. ii. Determine the bandwidth of the baseband signal (multiplexer output) for the multiplexer. i. Determine the minimum transmission bandwidth of the multiplexer. Explain, briefly, the modification needed for the multiplexer in the figure to achieve this bandwidth. 4 kHz cos 10,000xt Basebund signal cos 24,000mt cos 2000mt cos 32,000nt Figure Q2
1. Draw the AM transmitter block diagram. Identify the amplifiers in each stage. 2. Draw the low power FM transmitter block diagram. Identify the amplifiers in each stage.
With the aid of diagrams, show and explain how phase locking is used to demodulate a frequency-modulated (FM) signal.