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{| class="wikitable" style="text-align:right"! scope="col" rowspan="2" | Frequencyrange !! scope="col" rowspan="2" | Wavelengthrange !! scope="col" colspan="2" | ITU designation !! scope="col" rowspan="2" | IEEE bands! scope="col" | Full name! scope="col" | AbbreviationBOOK, Modern Electronic Communication, 2008, 978-0132251136, Jeffrey S. Beasley, 9th, Gary M. Miller, 4–5, ! scope="row" {{rh2|align=right}} | Below 3 Hz

105 km >			{{n/a}}

! scope="row" {{rh2|align=right}} | 3–30 Hz

	Extremely low frequency >	Extremely low frequency	>| {{n/a}}

! scope="row" {{rh2|align=right}} | 30–300 Hz

	Super low frequency >	Super low frequency	>| {{n/a}}

! scope="row" {{rh2|align=right}} | 300–3000 Hz

	Ultra low frequency >	Ultra low frequency	>| {{n/a}}

! scope="row" {{rh2|align=right}} | 3–30 kHz

	Very low frequency >	VLF	{{n/a}}

! scope="row" {{rh2|align=right}} | 30–300 kHz

	Low frequency >	Low frequency	>| {{n/a}}

! scope="row" {{rh2|align=right}} | 300 kHz – 3 MHz

	Medium frequency >	Medium frequency	>| {{n/a}}

! scope="row" {{rh2|align=right}} | 3–30 MHz

	High frequency >	High frequency	>	HF

! scope="row" {{rh2|align=right}} | 30–300 MHz

	Very high frequency >	VHF	style="text-align:center" | VHF

! scope="row" {{rh2|align=right}} | 300 MHz – 3 GHz

	Ultra high frequency >	UHF	style="text-align:center"	UHF, L band>L, S

! scope="row" {{rh2|align=right}} | 3–30 GHz

	Super high frequency >	Super high frequency	>	S band	, C band (IEEE)>C, X band	, Ku band>Ku, K band (IEEE)	, Ka band>Ka

! scope="row" {{rh2|align=right}} | 30–300 GHz

	Extremely high frequency >	Extremely high frequency	>	Ka band	, V band>V, W band	, Millimetre band>mm

! scope="row" {{rh2|align=right}} | 300 GHz – 3 THz

	Tremendously high frequency >	Tremendously high frequency	>| {{n/a}}

Frequencies of 1 GHz and above are conventionally called microwave,BOOK More detailed band designations are given by the standard IEEE letter- band frequency designationsIEEE Std 521-2002 Standard Letter Designations for Radar-Frequency Bands {{webarchive|url=https://web.archive.org/web/20131221005027weblink |date=2013-12-21 }}, Institute of Electrical and Electronics Engineers, 2002. (Convenience copy at National Academies Press.) and the EU/NATO frequency designations.BOOK, Leonid A. Belov, Sergey M. Smolskiy, Victor N. Kochemasov, Handbook of RF, Microwave, and Millimeter-Wave Components,weblink 2012, Artech House, 978-1-60807-209-5, 27–28,

Applications

{{see also|Radio#Applications|Radio spectrum#Applications}}

Communications

Radio frequencies are used in communication devices such as transmitters, receivers, computers, televisions, and mobile phones, to name a few. Radio frequencies are also applied in carrier current systems including telephony and control circuits. The MOS integrated circuit is the technology behind the current proliferation of radio frequency wireless telecommunications devices such as cellphones.

Medicine

Medical applications of radio frequency (RF) energy, in the form of electromagnetic waves (radio waves) or electrical currents, have existed for over 125 years,BOOK , and now include diathermy, hyperthermy treatment of cancer, electrosurgery scalpels used to cut and cauterize in operations, and radiofrequency ablation.BOOK

Non-surgical weight loss equipment

Radio Frequency or RF energy is also being used in devices that are being advertised for weight loss and fat removal. The possible effects RF might have on the body and whether RF can lead to fat reduction needs further study. Currently, there are devices such as trusculpt ID, Venus Bliss and many others utilizing this type of energy alongside heat to target fat pockets in certain areas of the body. That being said, there is limited studies on how effective these devices are.

Measurement

Test apparatus for radio frequencies can include standard instruments at the lower end of the range, but at higher frequencies, the test equipment becomes more specialized.WEB, RF Radio Frequency Signal Generator » Electronics Notes,weblink www.electronics-notes.com, 29 January 2021, {{citation needed|date=July 2017}}{{Citation |title=Measure a DUT's input power using a directional coupler and power sensor |author1=Siamack Ghadimi|publisher=EDN|date=2021}}

Mechanical oscillations

While RF usually refers to electrical oscillations, mechanical RF systems are not uncommon: see mechanical filter and RF MEMS.

See also

• Amplitude modulation (AM)
• Bandwidth (signal processing)
• Electromagnetic interference
• Electromagnetic radiation
• Electromagnetic spectrum
• EMF measurement
• Frequency allocation
• Frequency modulation (FM)
• Plastic welding
• Pulsed electromagnetic field therapy
• Spectrum management

References

{{reflist}}

External links

• Analog, RF and EMC Considerations in Printed Wiring Board (PWB) Design
• Definition of frequency bands (VLF, ELF … etc.) IK1QFK Home Page (vlf.it)
• Radio, light, and sound waves, conversion between wavelength and frequency {{Webarchive|url=https://web.archive.org/web/20120311050010weblink |date=2012-03-11 }}
• RF Terms Glossary {{Webarchive|url=https://web.archive.org/web/20080820005518weblink |date=2008-08-20 }}

{{radio spectrum}}{{EMSpectrum}}{{Telecommunications}}{{Analogue TV transmitter topics}}{{Authority control}}