Integration Manual

ANNA-B4 series - System integration manual
UBX-21000517 - R03 Appendix Page 71 of 76
C1-Public
ANNA-B4 has an identical antenna integration as ANNA-B1 and the below study of antenna gain is
also applicable on ANNA-B4. However, the higher output power (+8 dBm) of ANNA-B4 needs to be
added to the TRP measurements shown in Figure 37 and Table 25 and also considered when
comparing operating range which are based on ANNA-B1 (+4 dBm).
B.4.1 Example application 1
The C8_1 board with ANNA-B1 module in the corner, mounted to the left as shown in Figure 36 is an
example that shows what can be achieved by shrinking the board size.
Figure 36: Ground plane miniaturization example
Figure 37 shows the correlation between the total radiated power (TRP) and PCB length in
wavelengths (x). The C8_1 board radiates a peak power of -5.67 dBm when it has a length is 0.75
wavelengths and width of 0.14 wavelengths, which corresponds to a physical size of 46 mm and 8 mm
respectively. Additionally, the TRP patterns of the C8_1 board illustrates a nice round even shape as
shown in Table 25.
Figure 37: ANNA-B1 peak TRP is reached with the C8_1 PCB with a length equal to ~0.75 wavelengths
Figure 37 shows the total radiated power (TRP) patterns for the PCB. The operating range achieved
with this board is ~250 m with ANNA-B1.
-5,67 C8_1
-12
-11
-10
-9
-8
-7
-6
-5
-4
0,40 0,60 0,80 1,00 1,20 1,40 1,60
TRP (dBm)
Wavelengths of 2440 MHz - x length
TRP vs. Antenna ground plane x wavelengths