Product Manual

Swarm ½ Wave Antenna

Parameter

Value

Length

108.5 cm

Diameter (Connector)

40.7 mm

Diameter (along major length)

3.3 mm

Weight

150g

Operating Temperature

-60 °C to +130 °C

Operating Humidity

0-100% humidity, condensable

Impedance

50 Ohms nominal

Polarization

Linearly Polarized

VSWR (in Swarm Bands)

1.8

Gain

2.15 dBi

Frequency

137.000-138.000 MHz (RX)

148.000-150.000 MHz (TX)

Connector

NMO Female

Antenna Classification

Mobile, Fixed

Minimum separation distance from body

29cm

Table 9: Antenna characteristics for Swarm 1/2-wave Antenna

In addition, a GPS antenna is required. Any active or passive GPS antenna with an appropriate

connection to the Tile’s U.FL male connector or via the GPS_OUT pin is acceptable for use.

One such example of a passive antenna is: [Molex Part Number 1461860300]

5.3 RF Trace Layout Design

The Tile is certified with a PCB edge SMA connectors [Samtec Part Number

SMA-J-P-H-ST-EM1] for the RF and GPS outputs, with a micro-strip trace layout (along with

copper keep-out areas) as shown in Figures 8 and 9. The thicknesses of the PCB layers is

shown in Figure 10. Although the figure shows an example 4 layer PCB only the top and inner

layer 1 are strictly required.