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antennas:internal [2015/11/20 22:23] (current) schneider created |
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+ | ====== Internal Antenna ====== | ||
+ | The internal antenna was designed with the small gap above WLAN in the 2.4 GHz ISM band as target. | ||
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+ | The actual antenna seems to be closer to the lower part of the 2.4 GHz band, though. | ||
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+ | These are some measurements made with a ZVH8 network analyzer: | ||
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+ | {{:antennas:rad1o-internal-antenna-wideband.png?200|}} | ||
+ | {{:antennas:rad1o-internal-antenna-2400.png?200|}} | ||
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+ | These show that the antenna of this specific rad1o is most sensitive around 2.36 GHz and is still sensitive up to 2.45 GHz. Above that, the sensitivity starts to drop. | ||
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+ | This measurement was made with an SMA connector attached to the rad1o and a 0 Ohm resistor bridging the SMA connector to the internal antenna: | ||
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+ | {{:antennas:rad1o-internal-antenna-setup.jpg?200|}} | ||
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+ | Please keep in mind that different rad1os might have slightly different characteristics. |