Frekuensi radio: Perbedaan antara revisi
k ←Suntingan 180.242.40.209 (bicara) dikembalikan ke versi terakhir oleh JohnThorne |
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! Nama band || Singkatan || band [[International Telecommunication Union|ITU]] || Frekuensi || Panjang gelombang |
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! [[Frekuensi]] !! [[Panjang gelombang]] !! Nama band !! Singkatan<ref name="beasley">{{cite book|title=Modern Electronic Communication|year=2008|isbn=978-0132251136|author=Jeffrey S. Beasley|edition=9th|coauthors=Gary M. Miller|pages=4–5}}</ref> |
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| || || || < 3 [[Hz]] || > 100,000 [[km]] |
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| 3 – 30 Hz ||10<sup>4</sup> – 10<sup>5</sup> km|| [[Extremely low frequency]] || ELF |
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| [[Extremely low frequency]] || <center>ELF</center> || <center>1</center> || 3–30 Hz || 100,000 km – 10,000 km |
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| 30 – 300 Hz ||10<sup>3</sup> – 10<sup>4</sup> km|| [[Super low frequency]] || SLF |
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| 300 – 3000 Hz ||100 – 10<sup>3</sup> km|| [[Ultra low frequency]] || ULF |
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| [[Ultra low frequency]] || <center>ULF</center> || <center>3</center> || 300–3000 Hz || 1000 km – 100 km |
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| 3 – 30 kHz ||10 – 100 km|| [[Very low frequency]] || VLF |
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| [[Very low frequency]] || <center>VLF</center> || <center>4</center> || 3–30 [[kHz]] || 100 km – 10 km |
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| 30 – 300 kHz ||1 – 10 km|| [[Low frequency]] || LF |
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| [[Low frequency]] || <center>LF</center> || <center>5</center> || 30–300 kHz || 10 km – 1 km |
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| 300 kHz – 3 MHz ||100 m – 1 km|| [[Medium frequency]] || MF |
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| [[Medium frequency]] || <center>MF</center> || <center>6</center> || 300–3000 kHz || 1 km – 100 [[m]] |
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| 3 – 30 MHz ||10 – 100 m|| [[High frequency]] || HF |
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| [[High frequency]] || <center>HF</center> || <center>7</center> || 3–30 [[MHz]] || 100 m – 10 m |
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| 30 – 300 MHz ||1 – 10 m|| [[Very high frequency]] || VHF |
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| [[Very high frequency]] || <center>VHF</center> || <center>8</center> || 30–300 MHz || 10 m – 1 m |
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| 300 MHz – 3 GHz ||10 cm – 1 m|| [[Ultra high frequency]] || UHF |
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| [[Ultra high frequency]] || <center>UHF</center> || <center>9</center> || 300–3000 MHz || 1 m – 100 [[mm]] |
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| 3 – 30 GHz ||1 – 10 cm|| [[Super high frequency]] || SHF |
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| [[Super high frequency]] || <center>SHF</center> || <center>10</center> || 3–30 [[GHz]] || 100 mm – 10 mm |
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| 30 – 300 GHz ||1 mm – 1 cm|| [[Extremely high frequency]] || EHF |
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| [[Extremely high frequency]] || <center>EHF</center> || <center>11</center> || 30–300 GHz || 10 mm – 1 mm |
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| 300 GHz - 3000 GHz || 0.1 mm - 1 mm|| [[Tremendously high frequency]] || THF |
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Revisi per 18 Desember 2012 03.43
Frekuensi radio menunjuk ke spektrum elektromagnetik di mana gelombang elektromagnetik dapat dihasilkan oleh pemberian arus bolak-balik ke sebuah antena. Frekuensi seperti ini termasuk bagian dari spektrum di bawah ini:
Frekuensi Panjang gelombang Nama band Singkatan[1] 3 – 30 Hz 104 – 105 km Extremely low frequency ELF 30 – 300 Hz 103 – 104 km Super low frequency SLF 300 – 3000 Hz 100 – 103 km Ultra low frequency ULF 3 – 30 kHz 10 – 100 km Very low frequency VLF 30 – 300 kHz 1 – 10 km Low frequency LF 300 kHz – 3 MHz 100 m – 1 km Medium frequency MF 3 – 30 MHz 10 – 100 m High frequency HF 30 – 300 MHz 1 – 10 m Very high frequency VHF 300 MHz – 3 GHz 10 cm – 1 m Ultra high frequency UHF 3 – 30 GHz 1 – 10 cm Super high frequency SHF 30 – 300 GHz 1 mm – 1 cm Extremely high frequency EHF 300 GHz - 3000 GHz 0.1 mm - 1 mm Tremendously high frequency THF
Catatan: di atas 300 GHz, penyerapan radiasi elektromagnetik oleh atmosfer bumi begitu besar sehingga atmosfer secara efektif menjadi "opak" ke frekuensi lebih tinggi dari radiasi elektromagnetik, sampai atmosfer menjadi transparan lagi pada yang disebut jangka frekuensi infrared dan jendela optikal.
Band ELF, SLF, ULF, dan VLF bertumpuk dengan spektrum AF, sekitar 20–20,000 Hz. Namun, suara disalurkan oleh kompresi atmosferik dan pengembangan, dan bukan oleh energi elektromagnetik.
Penghubung listrik didesain untuk bekerja pada frekuensi radio yang dikenal sebagai Penghubung RF. RF juga merupakan nama dari penghubung audio/video standar, yang juga disebut BNC (Bayonet Neill-Concelman).
Band frekuensi yang memiliki nama
- Band III - 174–245 MHz
- ISM band...... frekuensi tertentu bervariasi
Microwave (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
Lihat pula
Pranala luar
- ^ Jeffrey S. Beasley (2008). Modern Electronic Communication (edisi ke-9th). hlm. 4–5. ISBN 978-0132251136.