Difference between revisions of "Radiasi Daya Pancar"
Jump to navigation
Jump to search
Onnowpurbo (talk | contribs) |
Onnowpurbo (talk | contribs) |
||
Line 56: | Line 56: | ||
* [[Konsep Dasar Radio]] | * [[Konsep Dasar Radio]] | ||
+ | ** [[Frekuensi]] | ||
+ | ** [[Panjang Gelombang]] | ||
+ | ** [[Daya Pemancar]] | ||
+ | ** [[Sensitivitas Penerima Radio]] | ||
+ | ** [[Penguatan Antenna]] | ||
+ | ** [[Redaman]] | ||
+ | ** [[Radiasi Daya Pancar]] | ||
+ | ** [[Propagasi di Udara (Free Space)]] | ||
+ | ** [[Line of Sight]] | ||
+ | ** [[Direct Sequence Spread Spectrum (DSSS)]] | ||
+ | ** [[Frequency Hopping Spread Spectrum (FHSS)]] | ||
+ | ** [[Protokol IEEE 802.11]] |
Revision as of 09:21, 28 January 2010
Pemerintah maupun konsensus komunitas kemungkinan besar akan menentukan batasan-batasan maksimum dari daya yang boleh di pancarkan dari antenna. Daya yang dipancarkan dari antenna dapat di ukur dengan dua (2) cara yaitu:
Effective Isotropic Radiated Power (EIRP) dalam dBm = daya di input antenna [dBm] + penguatan antenna [dBi]
Effective Radiated Power (ERP) dalam dBm = daya di input antenna [dBm] + penguatan antenna [dBd]
Effective Isotropic Radiated Power (EIRP) biasanya kita gunakan. Kita biasanya membatasi EIRP sekitar 36dBm.
Batas Legal
Batas EIRP yang legal pada frekeunsi 2.4GHz di Indonesia adalah:
- Untuk Point-to-Point (P2P) 36dBm
- Untuk Point-to-Multi-Point (P2MP) 30dBm
- Daya pancar maksimum 100mW (20dBm).
Contoh perhitungan daya Effective Isotropic Radiated Power (EIRP)
TX Power | Power Gain / Loss | Power | Antenna gain | EIRP | Legal? | (Yes / No) |
---|---|---|---|---|---|---|
1 Watt | (+30 dBm) | -1 dB loss via 1 m coax | + 29 dBm | +6 dBi | +35 dBm | Yes |
100 mW | (+20 dBm) | +14 dB Amplifier | +34 dBm | +8 dBi | +42 dBm | No |
25 mW | (+14 dBm) | +14 dB Amplifier | +28 dBm | +8 dBi | +36 dBm | Yes |