Spurious emission

Short description: Radio frequency not deliberately created

Part of a series on

Antennas

Common types

* Dipole
* Fractal
* Loop
* Monopole
* Satellite dish
* Television
* Whip

Components

* Balun
* Block upconverter
* Coaxial cable
* Counterpoise (ground system)
* Feed
* Feed line
* Low-noise block downconverter
* Passive radiator
* Receiver
* Rotator
* Stub
* Transmitter
* Tuner
* Twin-lead

Systems

* Antenna farm
* Amateur radio
* Cellular network
* Hotspot
* Municipal wireless network
* Radio
* Radio masts and towers
* Wi-Fi
* Wireless

Safety and regulation

* Mobile phone radiation and health
* Wireless electronic devices and health
* International Telecommunication Union
(Radio Regulations)

* World Radiocommunication Conference

Radiation sources / regions

* Boresight
* Focal cloud
* Ground plane
* Main lobe
* Near and far field
* Side lobe
* Vertical plane

Characteristics

* Array gain
* Directivity
* Efficiency
* Electrical length
* Equivalent radius
* Factor
* Friis transmission equation
* Gain
* Height
* Radiation pattern
* Radiation resistance
* Radio propagation
* Radio spectrum
* Signal-to-noise ratio
* Spurious emission

Techniques

* Beam steering
* Beam tilt
* Beamforming
* Small cell

* Bell Laboratories Layered
Space-Time (BLAST)

* Massive Multiple-input multiple-output (MIMO)

* Reconfiguration
* Spread spectrum

* Wideband Space Division
Multiple Access (WSDMA)

* v
* t
* e

In radio communication, a spurious emission is any component of a radiated radio frequency signal the complete suppression of which would not impair the integrity of the modulation type or the information being transmitted.[1] A radiated signal outside of a transmitter's assigned channel is an example of a spurious emission.[2] Spurious emissions can include harmonic emissions, intermodulation products and frequency conversion products.[3]

## See also

* Interference (communication)
* Radio spectrum pollution

## References

1. ↑ 47 USC §97.3(43)
2. ↑ Rudolf F. Graf, Modern Dictionary of Electronics, 7th ed., Woburn, Massachusetts: Butterworth-Heinemann, 1999, p. 724
3. ↑ ITU, 1.145 Spurious emission

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