EVK-NINA-B4 - User guide
UBX-19054587 - R04
Board configuration
Page 23 of 40
C1 - Public
4.3
Connecting an external antenna (EVK-NINA-B410DF)
An antenna used for direction finding has many antenna elements that are controlled via an antenna
switch. The antenna switch is controlled by several GPIOs on the EVK-NINA-B410DF. The antenna
also needs to be fed with power and a ground connection from the EVK.
Presently only one antenna, CorePatch 8 from CoreHW [10], is supported by the u-connectLocate
software. To use this antenna connect the antenna to the EVK-NINA-B410DF as described in Table
9.
EVK-NINA-B410DF
CoreHW antenna
D4
8 (ANT_SEL3)
D5
6 (ANT_SEL2)
D8
7 (ANT_SEL1)
D9
5 (ANT_SEL0)
D12 or GND
9 (GND)
D13 or 3V3
10 (3V3)
3V3
1 and 2
GND
3 and 4
Table 9 Connections for external antenna
To configure the u-connectLocate software to use the external antenna, enter the following
commands to EVK-NINA-B410DF:
AT+UDCFG=111,50
AT+UDCFG=107,”A1.1,A1.1,A1.1,A2.1,A3.1,A4.1,A5.1,A6.1,A7.1,A8.1,A1.1,A2.1,A3.1,A4.1,A5
.1,A6.1,A7.1,A8
.1,A1.2,A2.2,A3.2,A4.2,A5.2,A6.2,A7.2,A8.2,A1.2,A2.2,A3.2,A4.2,A5.2,A6.2,A7.2,A8.2"
AT+UDFCFG=104,18
AT+UDFCFG=106,1
AT+UDFCFG=105,"core_patch"
AT&W
AT+CPWROFF
For other configuration possibilities, see also the Indoor direction finding XPLR-AOA-1 kit user
guide [8].
