Juniper WLA522 Guida di Installazione Scaricare il pdf (Pagina 29)

Wireless LAN Access Point WLA522 and WLA522E Quick Start Guide Part Number: 530-042353 Rev.01

Connecting an AP to an External Antenna

Each radio on an Indoor AP can use an optional Juniper Networks external antenna. To mount the antenna,

see the instructions that come with the antenna.

To connect a mounted external antenna to an AP:

1. Attach the exterior antenna cable that is shipped with the antenna to the AP external antenna connector.

Both connectors are labeled to indicate the radio type. The AP has RP-SMA connectors for attachment to the

802.11b/g antenna and to the 802.11a antenna.

2. Attach the other end of the antenna cable to the antenna.

Radiation Patterns of Internal Antennas for 2.4-GHz and 5-GHz Radios in the WLA522 Access Point

The WLA522 access point has four internal, multiple-input multiple-output (MIMO) antennas, with two

antennas for each of the access point's two radios. The antennas support spatial and pattern diversity as well

as cross-chain and cross-band isolations for maximum performance. The antennas provide a maximum gain of

3.4-dBi at 2.4GHz throughput and 5.6-dBi at 5GHz throughput.

This topic provides graphical depictions of radiation patterns for the internal antennas. The graphics display

relative field strengths of signals transmitted from or received by the antennas. You can use this radiation

pattern information to determine the distance between access point and client and also where to place the

access points.

The figure below shows the locations of the four internal antennas within the WLA522. The antennas are

numbered 1 and 5 for 5GHz elements and 2 and 6 for 2.4GHz elements.

Figure 29: Internal Antennas of the WLA522 Access Point

Caution: The external connectors on the AP are labeled: 11B/G and 11A (excluding the WLA522E

which has numbered ports only). Each connector is a RP-SMA connector. Make sure you attach the

antenna to the correct connector.

Informational Note: If the AP is installed in a Juniper Networks outdoor AP enclosure, attach the

antenna cable to the lightning surge arrestor (if installed) or the RP-SMA bulkhead connector on the

enclosure.

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Juniper WLA522 Guida di Installazione Pagina 29