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> Power Meter AD8307
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Printable version
Power Meter Based on AD8307
I need an affordable power meter for certain measurements.
For this purpose, I use a low-cost measurement module based on the AD8307, an excellent IC.
| Assembled power meter. |
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| Connection to the voltmeter. |
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Specifications
- Input impedance: 50 ohms
- Usable frequency range: 1 to 30 MHz
- Usable power range: -60 dBm to +10 dBm
- Estimated accuracy: +/- 0.5 dB
- Minimum voltmeter operating voltage: approximately 6.2 V
Components Used
- Power meter module: This module is commonly sold on eBay or AliExpress.
Useful search terms include: AD8307 Logarithmic Power Detector.
The PCB is labeled: "RF Power Meter, 0.1 - 600 M -75 ... +16 dBm".
Typical price: around USD 25. - Power connector: Included with the power meter module.
- Battery holder: Bulgin BX0033.
- Voltmeter: AliExpress, around USD 1.7. Search terms: Mini Digital Voltmeter DC 3.7V to 30V, 0.28 inch.
- 3D-printed part: See the 3D folder.