Main Evb-Ant-1 Use Cases; Anchor Point; Custom Antenna Support - u-blox XPLR-AOA-3 User Manual

4.3 Main EVB-ANT-1 use cases

4.3.1 Anchor point

In this use case, the EVB-ANT-1 primarily supports ANT-B family antenna boards and routes direction
finding data to a position engine. For this purpose, the microcontroller must communicate with the
ANT-B family antenna board Bluetooth module using UART (or SPI) through the ANT-B family
connector. Direction finding data is then forwarded through the chosen communication interface –
either Ethernet or Wi-Fi using the MAYA-W1 module.
The highlighted areas in
EVB-ANT-1
ANT-B1x
connector
USB
FTDI USB
connector
RF
Custom
antenna
GPIO
board
Figure 14: EVB-ANT-1 components involved in the anchor point use case

4.3.2 Custom antenna support

EVB-ANT-1 also supports custom antenna boards that contain an antenna array and an RF switch.
To support the use case, an onboard NINA-B411 Bluetooth module can connect to a custom antenna
board through a 2.54 mm pitch connector. The module includes the power, the RF switch control
signals, and the U.FL connector for the RF signals. The MCU connects to the onboard NINA-B411
through the UART or SPI (pending software support), and GPIOs. Direction finding data can be
communicated to a host through the chosen communication interface – either Ethernet or Wi-Fi using
the MAYA-W1 module.
UBX-22006906 - R07
C1-Public
Figure 14 show the EVB-ANT-1 components involved in this use case.
USB
SPI
GPIO
UART
UART
FTDI
UART
SPI
NINA-B4
GPIO
EVB-ANT-1
Ethernet
Power
controller
MCU
SDIO
MAYA-W1
UART
XPLR-AOA-3 - User guide
ANT-B1x
USB
connector
Ethernet
connector
(PoE+)
DC power
connector
Wi-Fi
Bluetooth
Page 16 of 46