What is the radio frequency range?
Table of Contents
What is the radio frequency range?
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20 kHz to around 300 GHz.
What is the difference between if intermediate frequency and RF radio frequency?
RF to IF conversion is achieved using a RF device called Down-converter. Heterodyne and homodyne receiver architectures are used to convert modulated RF signal to IF signal. Superheterodyne uses 10.7MHz as first IF and 470KHz as second IF….RF vs IF.
| Type of application | Intermediate Frequency value |
|---|---|
| Broadcast Receiver | 110KHz |
Why do we require if in a receiver?
The main reason for using an intermediate frequency is to improve frequency selectivity. In communication circuits, a very common task is to separate out, or extract, signals or components of a signal that are close together in frequency. This is called filtering.
Why do we need RF signal?
An RF signal is an electromagnetic wave that communications systems use to transport information through air from one point to another. RF signals have been in use for many years. They provide the means for carrying music to FM radios and video to televisions.
How does a radio frequency work?
Radio frequency waves (RF) are generated when an alternating current goes through a conductive material. Frequency is measured in hertz (or cycles per second) and wavelength is measured in meters (or centimeters). Radio waves are electromagnetic waves and they travel at the speed of light in free space.
What is the frequency range of FM radio in India?
1.2 At present, analog terrestrial radio broadcast in India is carried out in Medium Wave (MW) (526–1606 KHz), Short Wave (SW) (6–22 MHz), and VHF-II (88–108 MHz) spectrum bands. VHF-II band is popularly known as FM band due to deployment of Frequency Modulation (FM) technology in this band.
What factors should be considered when selecting an intermediate frequency?
Abstract: The selection of an intermediate frequency for a super-heterodyne receiver involves consideration of the signal frequency, the tuning range, the pass-band width, the minimizing of spurious responses, regeneration stability, and frequency stability.
What are the functions fulfilled by the intermediate frequency amplifier in a radio receiver?
Intermediate-frequency (IF) amplifiers are amplifier stages used to raise signal levels in radio and television receivers, at frequencies intermediate to the higher radio-frequency (RF) signal from the antenna and the lower (baseband) audio or video frequency that the receiver is recovering.
What is the use of IF in radio?
What is the function of radio receiver?
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna.
What do I need to know about RF?
Radio frequency, or RF, is the rate at which the radio waves oscillate, or vibrate. It’s what we use to tune in to a specific radio broadcast. Any time you tune into a specific radio station, for example, you’re telling your radio to listen to that frequency.
What is the range of radio frequencies in wireless technologies?
around 3 kHz-300 GHz
Wireless Radio frequency is any of the electromagnetic wave frequencies that lie in the range ranging from around 3 kHz-300 GHz, which comprise those frequencies used for radar signals or communications. Radio frequency usually denotes to electrical rather than mechanical oscillations.