Difference between revisions of "Radiasi Daya Pancar"
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Contoh perhitungan daya [[Effective Isotropic Radiated Power]] ([[EIRP]]) | Contoh perhitungan daya [[Effective Isotropic Radiated Power]] ([[EIRP]]) | ||
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{| border="1" cellpadding=2 style="border-collapse: collapse" | {| border="1" cellpadding=2 style="border-collapse: collapse" | ||
!TX Power | !TX Power | ||
| Line 19: | Line 23: | ||
!(Yes / No) | !(Yes / No) | ||
|- | |- | ||
| − | |1 Watt | + | | 1 Watt |
| − | |(+30 dBm) | + | | (+30 dBm) |
| − | |-1 dB loss via 1 m coax | + | | -1 dB loss via 1 m coax |
| − | |+ 29 dBm | + | | + 29 dBm |
| − | |+6 dBi | + | | +6 dBi |
| − | |+35 dBm | + | | +35 dBm |
| − | |Yes | + | | Yes |
|- | |- | ||
| − | |100 mW | + | | 100 mW |
| − | |(+20 dBm) | + | | (+20 dBm) |
| − | |+14 dB Amplifier | + | | +14 dB Amplifier |
| − | |+34 dBm | + | | +34 dBm |
| − | |+8 dBi | + | | +8 dBi |
| − | |+42 dBm | + | | +42 dBm |
| − | |No | + | | No |
|- | |- | ||
| − | |25 mW | + | | 25 mW |
| − | |(+14 dBm) | + | | (+14 dBm) |
| − | |+14 dB Amplifier | + | | +14 dB Amplifier |
| − | |+28 dBm | + | | +28 dBm |
| − | |+8 dBi | + | | +8 dBi |
| − | |+36 dBm | + | | +36 dBm |
| − | |Yes | + | | Yes |
|} | |} | ||
Revision as of 08:43, 27 May 2009
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. Di Indonesia, kita mengadopsi batasan EIRP yang berbeda bagi sambungan Point-to-Point (P2P) dan sambungan Point-to-Multi-Point (P2MP), menjadi 36 dBm dan 30 dBm.
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 |