microwave
Sign in to savethumb|A telecommunications tower with a variety of dish antennas for microwave relay links on [[Frazier Peak, Ventura County, California. The apertures of the dishes are covered by plastic sheets (radomes) to keep out moisture.]]
AI overview
A microwave is a form of electromagnetic radiation used to transmit communications and data over long distances through the air, typically via dish antennas like those found on telecommunications towers. These systems matter because they enable wireless communication networks to relay signals reliably across regions, which is essential infrastructure for modern telecommunications.
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Article
26 sectionsContents
- Electromagnetic spectrum
- Frequency bands
- Propagation
- Troposcatter
- Antennas
- Design and analysis
- Sources
- Applications
- Communication
- Navigation
- Radar
- Radio astronomy
- Heating and power application
- Spectroscopy
- Frequency measurement
- Effects on health {{anchor|Health effects}}
- History
- Hertzian optics
- First microwave communication experiments
- Radar development
- Post World War II exploitation
- Solid state microwave devices
- Microwave integrated circuits
- See also
- References
- External links
thumb|A telecommunications tower with a variety of dish antennas for microwave relay links on [[Frazier Peak, Ventura County, California. The apertures of the dishes are covered by plastic sheets (radomes) to keep out moisture.]]
Microwave is a form of electromagnetic radiation with wavelengths shorter than other radio waves but longer than infrared waves. Its wavelength ranges from about one meter to one millimeter, corresponding to frequencies between 300 MHz and 300 GHz, broadly construed. A more common definition in radio-frequency engineering is the range between 1 and 100 GHz (wavelengths between 30 cm and 3 mm), or between 1 and 3000 GHz (30 cm and 0.1 mm). In all cases, microwaves include the entire super high frequency (SHF) band (3 to 30 GHz, or 10 to 1 cm) at minimum. The boundaries between far infrared, terahertz radiation, microwaves, and ultra-high-frequency (UHF) are fairly arbitrary and differ between different fields of study.