DWM1001 Datasheet

© Decawave Ltd 2017

Subject to change without notice

Version 1.5

Page 14

This section details antenna radiation patterns for the DWM1001-Dev board. Figure 3 presents a view of the

measurement planes considered in this document.

Table 11 shows antenna radiation patterns for the DWM1001 module mounted on the DWM1001-Dev board.

Three planes in the spherical space about the centre of the board are measured, with theta and phi plots

representing perpendicular polarisations.

The DWM1001 antenna is vertically polarised, meaning that the module is intended to be positioned vertically

upright when used in an RTLS system. An omnidirectional radiation pattern is seen in the XZ plane when

observed by another antenna which is also vertically polarised. This is shown in the XZ plane antenna patterns,

where the vertically polarised plot, phi, has a circular, or omnidirectional shape.

If the antennas are oriented perpendicular relative to each other, then the polarisation changes. In this case, the

horizontally polarised pattern, theta, applies and there are nulls at certain angles which can limit range and

introduce location inaccuracy.

Table 12 presents the key characteristics of the DWM1001’s antenna.

Figure 3. Antenna Radiation Pattern Planes

x

z

y