Electrical Engineering Glossary Definition for Spread Spectrum

Definition

A technology that modulates a signal over many carrier frequencies at once. This method can be used to make transmissions more secure, reduce interference, and improve bandwidth-sharing.

Spread-spectrum techniques can also be used to reduce electromagnetic interference by dithering the clock frequency so emissions are no longer concentrated at one frequency.

See:

• An Introduction to Direct-Sequence Spread-Spectrum Communications
• Low-EMI, Class D Audio Power Amplifiers with Spread-Spectrum Modulation
• About Spread-Spectrum Oscillators

See Also

• RFI
• DSSS
• EMI
• EMC
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