Application Note
page 28 of 33
V1.7
2022-08-01
XENSIV™ BGT60LTR11AIP shield
60 GHz radar system platform
Power consumption analysis
7.2
Adaptive pulse repetition time
The Adaptive Pulse Repetition Time (APRT) is a power-saving option of the BGT60LTR11AIP MMIC. It consists of
multiplying the PRT by a factor, of 2, 4, 8 or 16, when no target is detected by the internal detector. When a
target is detected, the PRT returns to the default value to ensure reliable detection.
Enabling the APRT, as an additional power-saving option, reduces effectively the ON-time of the MMIC since the
default PRT is only used when a target is detected, hence reducing the overall power consumption. Depending
on the use-case and the multiplier value selected, the power consumption of the shield can be reduced
significantly.
The following figures show how the set PRT = 500 µs, is changing when the APRT is enabled with different
multiplier factors and when a target is detected or not.
Figure 29
APRT disabled, target detected/no target detected, PRT remains 500 µs
