Frékuénsi radio: Béda antarrépisi
Kaca anyar: [[Gambar:Atmospheric electromagnetic transmittance or opacity.jpg|thumb|right|350px|Rough plot of Earth's atmospheric transmittance (or opacity) to various wavelengths of electromagnetic... |
mTidak ada ringkasan suntingan |
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Baris ka-83: | Baris ka-83: | ||
== Pita frékuénsi anu ngabogaan ngaran == |
== Pita frékuénsi anu ngabogaan ngaran == |
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*Pita III - 174–245 MHZ |
*Pita III - 174–245 MHZ |
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*[[ISM band |
*[[ISM band]] |
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=== Gelombang mikro (IEEE US) === |
=== Gelombang mikro (IEEE US) === |
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Baris ka-107: | Baris ka-106: | ||
| [[W band]]|| 75 to 111 GHZ |
| [[W band]]|| 75 to 111 GHZ |
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== Tempo ogé == |
== Tempo ogé == |
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*[[Parambatan radio]] |
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[[Kategori:Telekomunikasi]] |
[[Kategori:Telekomunikasi]] |
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[[Kategori:Fisika]] |
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[[id:Frekuensi radio]] |
[[id:Frekuensi radio]] |
Révisi nurutkeun 12 Agustus 2008 09.37
Frékuénsi radio nujul ka spéktrum éléktromagnétik di mana gelombang éléktromagnétik bisa dihasilkeun ku ngeupankeun arus bulak-balik ka hiji anteneu. Frékuénsi kawas ieu kaasup bagian tina spéktrum di handapeun ieu:
Ngaran pita | Singketan | pita ÉTA | Frékuénsi | Panjang gelombang |
---|---|---|---|---|
< 3 Hz | > 100,000 km | |||
Extremely low frequency |
ELF |
1 |
3–30 Hz | 100,000 km – 10,000 km |
Super low frequency |
SLF |
2 |
30–300 Hz | 10,000 km – 1000 km |
Ultra low frequency |
ULF |
3 |
300–3000 Hz | 1000 km – 100 km |
Very low frequency |
VLF |
4 |
3–30 khz | 100 km – 10 km |
Low frequency |
LF |
5 |
30–300 khz | 10 km – 1 km |
Medium frequency |
MF |
6 |
300–3000 khz | 1 km – 100 m |
High frequency |
HF |
7 |
3–30 MHZ | 100 m – 10 m |
Very high frequency |
VHF |
8 |
30–300 MHZ | 10 m – 1 m |
Ultra high frequency |
UHF |
9 |
300–3000 MHZ | 1 m – 100 mm |
Super high frequency |
SHF |
10 |
3–30 GHZ | 100 mm – 10 mm |
Extremely high frequency |
EHF |
11 |
30–300 GHZ | 10 mm – 1 mm |
Di luhur 300 GHZ | < 1 mm |
Catetan: di saluhureun 300 GHz, penyerepan radiasi éléktromagnétik ku atmosfir Bumi kuat pisan sahingga atmosfir sacara éféktif jadi "henteu tembus" ku frékuénsi radiasi éléktromagnétik nu leuwih luhur, nepi ka atmosfir jadi transparan deui dina anu disebut wilayah frékuénsi infrabeureum jeung jandéla optik.
Pita ELF, SLF, ULF, sarta VLF patumpuk-tumpuk jeung spéktrum AF, kira-kira dina 20–20,000 Hz. Tapi, sora dikirimkeun ku komprési jeung mekarna hawa dina atmosfir, sarta lain ku énergi éléktromagnétik.
Pita frékuénsi anu ngabogaan ngaran
- Pita III - 174–245 MHZ
- ISM band
Gelombang mikro (IEEE US)
L band | 1 to 2 GHZ |
S band | 2 to 4 GHZ |
C band | 4 to 8 GHZ |
X band | 8 to 12 GHZ |
Ku band | 12 to 18 GHZ |
K band | 18 to 26 GHZ |
Ka band | 26 to 40 GHZ |
V band | 40 to 75 GHZ |
W band | 75 to 111 GHZ |