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Gemini Communication Ltd.Gemini Communication Ltd.

Innovation & LeadershipInnovation & Leadership

Basics of RF TechnologyRef. 1020001100

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RF Basics

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Wave

A disturbance that propagates periodically

Transfers energy

A mechanical wave exists in a medium

Electromagnetic wave can travel through vacuum

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Amplitude

Magnitude of the maximum disturbance

during one cycle

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Frequency

Number of times that a repeated event occursper unit time

Measured in hertz (Hz)

Where, T is the time period of one cycle in

seconds

The frequency is equal to the speed of the

wave (speed of light when traveling in

vacuum) divided by the wavelength

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Wavelength

Distance between repeating units of a

wave pattern

Designated by the Greek letter lambda

()

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Phase

Phase describes the current state of a

wave

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Wave Properties

Reflection the change of direction of waves, due to hitting a

surface

Refraction the change of direction of a wave due to entering anew medium

Diffraction the spreading out / bending of waves, when they

pass through a small slit or an edgeInterference the superposition of two waves

Dispersion the splitting up of waves by frequency

Rectilinear propagation the movement of waves in straight lines

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Electromagnetic Radiation

Electromagnetic Radiation is a propagating wave in space with

electric and magnetic components

These components oscillate at right angles to each other and to

the direction of propagation

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Electromagnetic Spectrum

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Electromagnetic Spectrum

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Thank YouContact : info@gcl.in