Data Sheet

©
RFbeam Microwave GmbH | Schuppisstrasse 7 | CH-9016 St. Gallen | www.rfbeam.ch | K-LD 2 | data sheet 02 / 2020 – Revision C | Page 2 / 25
CHARACTERISTICS
Parameter Conditions / Notes Symbol Min Typ Max Unit
Operating Conditions
Supply voltage V
cc
3.2 5.5 V
RMS current I
RMS
55 mA
Peak current I
peak
65 mA
Operating temperature T
op
-20 +85 °C
Storage temperature T
st
-20 +105 °C
Relative humidity Non-condensing, given by design RH 10 90 %
Transmitter
Transmitter frequency T
amb
= -20° C .. + 85° C f
TX
24.050 24.250 GHz
Frequency drift vs temperature V
cc
= 3.3 V ∆ f
TX
0.06 MHz / ° C
Output power EIRP P
TX
+12 dBm
Spurious emission According to ETSI 300 440 P
Spur
-30 dBm
Receiver
LNA gain G
LNA
20 dB
Mixer Conversion loss f
IF
= 1 kHz D
mixer
6 dB
Antenna gain f
TX
= 24.125 GHz G
Ant
8.6 dBi
Receiver sensitivity f
IF
= 500 Hz, B = 1 kHz, S / N = 6dB P
RX
-112 dBm
Overall sensitivity f
IF
= 500 Hz, B = 1 kHz, S / N = 6dB D
system
-127 dBc
Max. Detection distance
σ = 1 m ² ( Person )
R 20 m
Signal Processing
Modulation none
Velocity processing 256 point FFT
Sample rate f
sample
1.28 12.8 kHz
Speed range Depending on sampling frequency r
speed
0 143 km / h
Response time Depending on sampling frequency
andFFTaverage feature
t
detect
20 400 ms
Antenna
Horizontal –3dB beamwidth E-Plane
W
φ
80 °
Vertical –3dB beamwidth H-Plane
W
θ
34 °
Horiz. Sidelobe suppression
D
φ
-12 -20 dB
Vertical sidelobe suppression
D
θ
-12 -20 dB
Interface
Digital Output high level voltage V
OH
2.1 2.6 V
Digital Output low level voltage V
OL
0.3 0.64 V
Digital Input high level voltage V
IH
2.0 3.3 V
Digital Input low level voltage V
IL
-0.3 0.8 V
Digital I/O source/sink current I
OH,
I
OL
-20 20 mA
Analogue Input level V
Ain
0 3 V
Analogue Input impedance Z
in
200 kΩ
Body
Outline Dimensions 25 × 25 × 6.5 mm³
Weight 6.5 g
Connector 8 pin 2.54 mm
ESD rating
Electrostatic discharge Human body model class 1C V
ESD
2000 V