Difference between revisions of "Radiasi Daya Pancar"
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= daya di input antenna [dBm] + [[penguatan antenna]] [dBd] | = daya di input antenna [dBm] + [[penguatan antenna]] [dBd] | ||
| − | [[Effective Isotropic Radiated Power]] ([[EIRP]]) biasanya kita gunakan. Kita biasanya membatasi [[EIRP]] sekitar 36dBm | + | [[Effective Isotropic Radiated Power]] ([[EIRP]]) biasanya kita gunakan. Kita biasanya membatasi [[EIRP]] sekitar 36dBm. |
==Batas Legal== | ==Batas Legal== | ||
| − | Batas [[EIRP]] yang legal pada frekeunsi 2.4GHz di Indonesia adalah 36dBm | + | 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]])== | ==Contoh perhitungan daya [[Effective Isotropic Radiated Power]] ([[EIRP]])== | ||
Revision as of 09:13, 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 |