Cisco Bi-Directional Train Top Antenna (IW-ANT-SKD-513-Q)

This chapter contains the following sections:

Overview

The Cisco Bi-Directional Train Top Antenna (IW-ANT-SKD-513-Q) is a 5 GHz 13 dBi Shark bi-directional antenna with a QMA connector.

The antenna is designed to survive high vibration rail installations, including roof mounting on locomotive and passenger cars.

Figure 1. IW-ANT-SKD-513-Q Antenna

Features include the following:

  • Dual feed, dual slant ± 45°, linear polarization

  • Designed for metallic or non-metallic roof mounting, no ground plane required

  • Extremely rugged purpose built for rail and metro applications

  • Symmetrical patterns, maintains same pattern performance over each polarization

  • High port-to-port performance correlation

  • Designed to meet EN50155 & AAR certification requirements

Electrical Specifications

The following table is a summary of the electrical specifications:

Typical VSWR

<2:1 (max 2.5:1)

Bandwidth

4.9-5.9 GHz

Nominal Impedance

50 Ω

Gain

10-13 dBi

Beamwidth (Free Space, Non-Metallic Ground Plane)

H-Plane 42°

E-Plane 28°

Beamwidth (Ground Plane Mounted)

H-Plane 39°

E-Plane 21°

Polarization

Dual Slant 45°, Linear

Port-to-Port Isolation

> 22 dB

Mechanical and Environmental Specifications

The following table is a summary of the mechanical and environmental specifications:

Dimensions

8.3 x 5.5 x 3.3 inches (210 x 140 x 85 mm)

Weight

2.7 lbs

Housing Antenna Material

Aluminum, hard coat anodized

Temperature Range

-40°C to +85°C

Ingress Protection

IP56/IP67

Mechanical Drawing

The following diagram provides mechanical details of the antenna.

Figure 2. Front and Side View
Figure 3. Bottom View

Radiation Patterns

The following figures show the antenna radiation patterns.


Note
These radiation patterns show frequencies tested by the antenna vendor outside of the supported 4.9-5.9 GHz frequency range.