high frequency (millimeter wave) 2008142093 b.m yu
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High Frequency(Millimeter Wave)
2008142093B.M YU
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What is millimeter wave
Extremely high frequency is the highest radio fre-quency band. EHF runs the range of frequencies from 30 to 300 GHz above which electromagnetic radiation is considered to be low (or far) infrared light, also referred to as THz(terahertz) radiation. This band has a wavelength of ten to one millimetre, giving it the name millimeter band or millimetre wave, sometimes abbreviated MMW or mmW.
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Characteristic of EHF
2.0GHz (15cm)
2.2GHz (13.6cm)
50GHz (0.8cm)
55GHz (0.55cm)
60GHz (0.5cm)
65GHz (0.46cm)
About 30 times smaller wavelength
attenuation∝ frequency1. Miniaturization of antenna is possible
2. Miniaturization of device is also possible
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Characteristic of EHF
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Characteristic of EHF
Apartment 506호
Apartment 505호
Not interference!!!
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Characteristic of EHF
Not interference!!!
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Characteristic of EHF
60G 64G62G 66G58G56G
1728MHz >> 60MHz(When 2.1GHz)
28.8times wider than 2.1GHz wireless communication!!!
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Application of EHF
12~45GHz Military working satel-lite, 3~95GHz vehicle loaded radar weapon, missile trace equipment
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Application of EHF
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Application of EHF
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Application of EHF
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Application of EHF
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Application of EHF