Changes between Version 10 and Version 11 of Hardware/lDirAnt


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Timestamp:
Sep 28, 2016, 1:53:28 PM (8 years ago)
Author:
jkol
Comment:

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  • Hardware/lDirAnt

    v10 v11  
    77=== !WiFi Antennas ===
    88
    9 Most of the internal !WiFi devices are attached to dual band, blade style omni-directional antennas shown in Figure 1. These are mounted at the end of the two rods extending at the 45 degree angle downwards from the node harness as shown in Figure 2 with the distance between the two antenna rods (i.e. the two internal !WiFi devices) of 26 inches.
     9Most of the internal !WiFi devices are attached to dual band (2.4/5 GHz), blade style omni-directional antennas shown in Figure 1. These are mounted at the end of the two rods extending at the 45 degree angle downwards from the node harness as shown in Figure 2 with the distance between the two antenna rods (i.e. the two internal !WiFi devices) of 26 inches.
    1010
    1111 || [[Image(Ant1.png, width=400, caption="Figure 1")]] || [[Image(NodeWiFi.png, width=400)]] ||
    1212
    13 These antennas have [attachment:Ant1.pdf typical donut-shaped shape radiation pattern] with an average 2 (@ 2.4 GHz) and 4 (@ 5GHz) dBi of gain. 
     13These antennas have a [attachment:Ant1.pdf typical donut-shaped shape radiation pattern] with an average gain of 2 dBi (@ 2.4 GHz) and 4 dBi (@ 5GHz). 
    1414
    1515=== Multi-standard Antennas ===
    1616
    17 Number of SDR units in the grid have [attachment:Ant2.pdf multi-band (i.e. multi-standard) antennas] covering most of the !WiFi and 4G bands. They are mounted on the square plate about 12 inches apart (in horizontal plane) as shown in Figure 4.
     17A number of SDR units in the grid have [attachment:Ant2.pdf multi-band (i.e. multi-standard) antennas] covering most of the !WiFi and 4G bands. They are mounted on a square plate 12 inches apart (in the horizontal plane) as shown in Figure 4.
    1818 
    1919 || [[Image(Ant2.png, width=400)]] || [[Image(MountingPlate.png, width=400)]] ||
    … …  
    2424
    2525The 2.4-2.5 GHz [http://www.fidelity-comtech.com/wp-content/uploads/SpecSheet_FCI-3740.pdf Fidelity Comtech FCI-3740 Phased Array] device actually comprises of:
    26  * Directional antenna with 14.5 dBi of gain and 127 electronically selectable antenna patterns
     26 * Directional antenna with 14.5 dBi of gain and 49 electronically selectable antenna patterns
    2727 * Omni-directional 9 dBi antenna
    2828 * Embedded GPS
    29 The antenna is managed through
     29The antenna is managed through a combination of hardware and back-end services.
    3030
    3131==== Antenna Switching Hardware ====