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UWB antenna

UWA-02

DW1000 UWB anchor system indoor positioning uwb antenna

The UWA-02 antenna is designed to be integrated onto a DW1000 based tag or anchor design. It is designed
specifically to work with 95Power’s DW1000 UWB transceiver providing a low cost, high efficiency compact
solution with excellent fidelity and low group delay variation with antenna orientation.

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Operational Frequency Range 3 GHz to 8 GHz
Radiation Pattern Omni-direct
impedance 50 Ω

The UWA-02 antenna is designed to be integrated onto a DW1000 based tag or anchor design. It is designed
specifically to work with 95Power’s DW1000 UWB transceiver providing a low cost, high efficiency compact
solution with excellent fidelity and low group delay variation with antenna orientation.

 

Operational Frequency Range 3 GHz to 8 GHz
Maximum Gain 2.2 dBi at 4 GHz
3.3 dBi at 4 GHz
Radiation Pattern Omni-direct
Azimuth Beam width Omni-directional
Operating &Storage Temperature -40~+85℃
Shell material PC
antenna interface SMA Male

Simulation Results
The following results show the expected performance of WB002 when using a full ground plane as shown in
the layout files in section 3.

4.1 Radiation patterns
The following plots show the expected radiation patterns for different antenna orientation.

 

Group Delay Variation
Group delay variation is an important parameter to consider for antennas to be used in location solutions using
IR-UWB such as DW1000. Here we mean how the group delay of the antenna changes as the antenna is
rotated. 1ns of variation would represent 30 cm variation in the reported distance, so we aim for a group delay
variation with antenna rotation of <±100 ps. The plot below shows the variation in group delay as the antenna is
rotated. The scale is in nanoseconds and as can be seen there is very little variation with the antenn

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