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Extremely high frequency
Videos
Extremely high frequency is the electromagnetic band from 30 to 300 gigahertz, as designated by the International Telecommunication Union designation. It is in the microwave part of the radio spectrum
Part of the Atacama Large Millimeter Array (ALMA), Chile, America, a millimeter wave radio telescope
Part of the Atacama Large Millimeter Array (ALMA), Chile, America, a millimeter wave radio telescope
A CableFree MMW link installed in the UAE installed for Safe City applications, providing 1 Gbit/s capacity between sites. The links are fast to deplo
A CableFree MMW link installed in the UAE installed for Safe City applications, providing 1 Gbit/s capacity between sites. The links are fast to deploy and have a lower cost than fibre optics.
Millimeter wave fire control radar for CIWS gun on Soviet aircraft carrier Minsk, Russia
Millimeter wave fire control radar for CIWS gun on Soviet aircraft carrier Minsk, Russia
Millimeter wave security scanner at Bonn airport
Millimeter wave security scanner at Bonn airport
Super high frequency
Videos
Super high frequency is the ITU designation for radio frequencies in the range between 3 and 30 gigahertz. This band of frequencies is also known as the centimetre band or centimetre wave as the wavel
Extremely high frequency
…GHz), as designated by the International Telecommunication Union (ITU) designation. It is in the microwave part of the radio spectrum, between the super high frequency band and the terahertz band. Radio waves in this band have wavelengths from ten to one millimeter (10–1 mm), so it is also called the millimeter band…
A variety of parabolic antennas on a communications tower in Australia for point-to-point microwave communication links. Some have white plastic radom
A variety of parabolic antennas on a communications tower in Australia for point-to-point microwave communication links. Some have white plastic radomes over their apertures to protect against rain.
X-band (8 - 12 GHz) marine radar antenna on a ship. The rotating bar sweeps a vertical fan-shaped beam of microwaves around the water surface to the h
X-band (8 - 12 GHz) marine radar antenna on a ship. The rotating bar sweeps a vertical fan-shaped beam of microwaves around the water surface to the horizon, detecting nearby ships and other obstructions
Microwaves are often carried by waveguide, such as this example from an air traffic control radar, since other types of cable have large power losses
Microwaves are often carried by waveguide, such as this example from an air traffic control radar, since other types of cable have large power losses at SHF frequencies.