Cisco Aironet Antennas and Accessories

Installation Guide for Cisco Directional Antenna (AIR-ANT-SE-WiFI-D)

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Cisco Aironet Directional Antenna (AIR-ANT-SE-WiFi-D)

Table Of Contents

Cisco Aironet Directional Antenna (AIR-ANT-SE-WiFi-D)

Technical Specifications

System Requirements

Installation Notes

Installating and Using the Antenna

Obtaining Documentation, Obtaining Support, and Security Guidelines

Cisco Aironet Directional Antenna (AIR-ANT-SE-WiFi-D)

This document describes the Cisco Directional Antenna (AIR-ANT-SE-WiFi-D) and provides instructions for mounting it. The antenna operates in the 2.4-GHz and 5-GHz frequency bands and is designed for use with Cisco Spectrum Expert spectrum analyzer software. The antenna connects to the Cisco Spectrum Expert adapter card (hereafter referred to as the card). The antenna's directional qualities provide focused RF detection in a given direction. The antenna can be useful with all ISMS mobile features, but is especially useful in locating and identifying RF devices.

The following information is provided in this document.

Technical Specifications

System Requirements

Installation Notes

Installating and Using the Antenna

Obtaining Documentation, Obtaining Support, and Security Guidelines

Technical Specifications

Antenna type

Dual band directional

Operating frequency range

2400-2500 MHz
4900-5900 MHz

Nominal input impedance

50 W


Less than 1.8:1 over all bands

Peak gain (2400-2500 MHz)


Peak gain (4900-5900 MHz)



Linear, vertical

Azimuth plane beamwidth

55 degrees

Elevation plane beamwidth

50 degrees

Front-to-back ratio

> 20 dB

Mounting method

Hook and loop (Velcro)


4.5 in.
( 11.4 cm)


2.875 in.
(7.302 cm)


0.375 in.
(0.952 cm)





Cable length

24-in. (60.9 cm)

System Requirements

This antenna is designed for use with the Cisco Spectrum Expert application only. The antenna is not designed for use with access points.

Installation Notes

The antenna is designed to connect to a dedicated antenna port on a Cisco Spectrum Expert adapter card. No special tools are required to install the antenna.

Installating and Using the Antenna

To provide mobility and take advantage of the antenna's directional characteristics, the antenna is typically connected to a laptop computer as shown in Figure 1.

Figure 1 Typical Antenna Installation on a Laptop Computer

. Follow these steps to assemble the antenna and install it on a laptop computer.

Step 1 Verify that the contents of the directional antenna kit are complete as shown in Figure 2.

Figure 2 Directional Antenna Kit Contents


Mounting base


Two Velcro mounting pads


Antenna and mast


Antenna cable

Step 2 Slide the antenna and mast into the mounting base as shown in Fig 3.

Figure 3 Installing the Antenna and Mast in the Mounting Base

Step 3 Attach a Velcro pad to the mounting base.

Step 4 Attach the other Velcro pad on the laptop computer cover where you intend to mount the antenna.

Step 5 Attach the assembled antenna to the Velcro pad on your laptop computer cover as shown in Figure 1.

Note Before completing the following steps, you must have installed and configured Cisco Spectrum Expert software and the Specrum Expert card on your laptop. The card should be inserted in a PCMCIA slot before you continue the installation.

Step 6 Connect the antenna cable to the card as shown in Figure 4.

Figure 4 Connecting the Antenna Cable to the Sensor Card

Step 7 Boot your laptop computer and start the Cisco Spectrum Expert software.

Step 8 To find the direction of a signal on the frequency band selected, slowly rotate the antenna mast to obtain a maximum level on the spectrum display. Figure 5 shows the directional properties of the antenna.

Figure 5 Using the Directional Antenna

Step 9 Refer to your Cisco Spectrum Expert software documentation for information about detecting, locating, and identifying signals.

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at: