Application Note
page 11 of 32
V1.0
2021-03-31
Distance2GoL (Software-Controlled FMCW) low-power radar shield using
BGT24LTR11 for range detection and human tracking
System specifications
3
System specifications
Table 1 gives the specifications of the Distance2GoL (Software-Controlled FMCW) radar system.
Table 1
Distance2GoL (Software-Controlled FMCW) module performance specifications
Parameter
Unit
Min.
Typ.
Max.
Comments
System performance
Speed
km/h
0
-
10
Distance
m
1
15
25
Human target
Power supply
Supply voltage
V
3.3
5
5.5
Supplied via the Baseboard
Supply current
mA
50
All blocks on (only the Shield)
Transmitter characteristics
Transmitter frequency
GHz
24.025
24.125
24.225
Effective isotropic radiated power
(EIRP)
dBm
+14
Conditions:
BGT P
OUT
: +6 dBm
Loss (TX
OUT
to ant. input = 2
dB)
Simulated ant. gain = +10 dBi
Receiver characteristics
Receiver frequency
GHz
24.025
24.125
24.225
IF conversion gain
–
(stage 1)
dB
30
Customizable by re-soldering
baseband section (Table 3)
IF conversion gain
–
(stage 1 + stage 2)
dB
57
Customizable by re-soldering
baseband section (Table 3)
-3 dB bandwidth
–
(stage 1 + stage 2)
kHz
7
15
Customizable by re-soldering
baseband section (Table 3)
Antenna characteristics (simulated)
Antenna type
1 x 4
Horizontal
–
3 dB beamwidth
Degrees
80
Elevation
–
3 dB beamwidth
Degrees
29
Horizontal sidelobe level
suppression
dB
13
Vertical sidelobe level suppression
dB
13
Note:
The above specifications are indicative values based on typical datasheet parameters of
BGT24LTR11 and simulation of several other parameters (antenna characteristics and baseband
section) and can vary from module to module. The numbers above are not guaranteed indicators
for module performance for all operating conditions.
