blog:2025-02-03:antenna_isolation
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| blog:2025-02-03:antenna_isolation [2025/02/03 19:48] – va7fi | blog:2025-02-03:antenna_isolation [2025/02/03 19:51] (current) – va7fi | ||
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| \$$ \text{Isolation} =28 + 40 \cdot \log \left(\frac{d}{\lambda}\right) \qquad \text{or} \qquad | \$$ \text{Isolation} =28 + 40 \cdot \log \left(\frac{d}{\lambda}\right) \qquad \text{or} \qquad | ||
| - | They both say: when the separation is one wavelength, the isolation will be 28. | + | They both say: when the separation is one wavelength, the isolation will be 28 dB. |
| * But then the first one says: every time you multiply that separation by 10 (1, 10, 100, 1000, etc), you'll add 40 dB of isolation. | * But then the first one says: every time you multiply that separation by 10 (1, 10, 100, 1000, etc), you'll add 40 dB of isolation. | ||
| * And the second one says: every time you multiply that separation by 2 (1, 2, 4, 8, 16, etc), you'll add 12 dB of isolation. | * And the second one says: every time you multiply that separation by 2 (1, 2, 4, 8, 16, etc), you'll add 12 dB of isolation. | ||
blog/2025-02-03/antenna_isolation.1738640892.txt.gz · Last modified: 2025/02/03 19:48 by va7fi