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RFbeam Microwave

K-LD2 Datasheet Preview

K-LD2 Datasheet

radar transceiver

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data sheet
 K-L D 2
radar transceiver
Features
Applications
Description
Block Diagram
–– Small and low cost digital 24 GHz radar motion detector
–– Detection distance up to 15m (human) 30m (cars)
–– High immunity against interferences
–– Integrated FFT signal processing with digital outputs
–– Sensitivity and hold time can be set using analogue inputs
–– Advanced detection data read-out over serial interface
–– Wide power supply range from 3.2 to 5.5V
–– 2 × 4 patch antenna with 80°/  34° beam aperture
–– General movement detection applications
–– Door opener
–– Illumination of advertising boards
–– Touch free switches
–– Security systems
–– Indoor and outdoor lighting control applications
–– Object speed measurement systems
–– Industrial sensors
The K-LD2 is a fully digital and low cost radar movement detector.
The digital structure makes it very easy to use in any stand-alone
or MCU based application where a movement detection or speed
measurement is required.
The sensor includes a 2 × 4 patch radar front-end with an asymme-
trical beam and a powerful signal processing unit with two digital
outputs for signal detection information. The sensitivity and the hold
time are adjustable using analogue inputs with potentiometers. The
serial interface features a powerful command set to read-out advan-
ced detection data or to fully customize the detection algorithm.
There is no need to write own signal processing algorithms or
­handle small and noisy signals. This module contains every­thing
that is necessary to build a simple, yet reliable movement ­detector.
A very small footprint of 25 × 25 × 6.5 mm gives maximum flexibility
in the product development process.
A powerful evaluation kit (K-LD2-EVAL) with signal visualization
on a PC is available.
Figure 1: K-LD2 block diagram
K-L D2
Rx
Tx
24.125 GHz
voltage regulator
signal processing unit
detect
miscellaneous
serial interface
sensitivity hold time
     © RFbeam Microwave GmbH | Schuppisstrasse 7 | CH-9016 St. Gallen | www.rfbeam.ch | K-LD 2 | data sheet
09/2018 - Revision B | Page 1 / 20




RFbeam Microwave

K-LD2 Datasheet Preview

K-LD2 Datasheet

radar transceiver

No Preview Available !

Characteristics
Parameter
Operating Conditions
Supply voltage
Supply current
Operating temperature
Storage temperature
Transmitter
Transmitter frequency
Frequency drift vs temperature
Output power
Spurious emission
Receiver
LNA gain
Mixer Conversion loss
Antenna gain
Receiver sensitivity
Overall sensitivity
Max. Detection distance
Signal Processing
Modulation
Velocity processing
Sample rate
Speed range
Response time
Antenna
Horizontal –3dB beamwidth
Vertical –3dB beamwidth
Horiz. Sidelobe suppression
Vertical sidelobe suppression
Interface
Digital Output high level voltage
Digital Output low level voltage
Digital Input high level voltage
Digital Input low level voltage
Digital I/O source/sink current
Analogue Input level
Analogue Input impedance
Body
Outline Dimensions
Weight
Connector
Conditions / Notes
Tamb  =  -20 ° C .. + 85 ° C
Vcc = 3.3 V
EIRP
According to ETSI 300 440
fIF = 1 kHz
fTX = 24.125 GHz
fIF = 500 Hz, B = 1 kHz, S / N = 6dB
fIF = 500 Hz, B = 1 kHz, S / N = 6dB
σ  =  1 m ² ( Person    )
Depending on sampling frequency
Depending on sampling frequency
and FFT average feature
E-Plane
H-Plane
Symbol Min Typ Max Unit
Vcc
Icc
Top
Tst
fTX
∆ fTX
PTX
PSpur
GLNA
Dmixer
GAnt
PRX
Dsystem
R
fsample
rspeed
tdetect
3.2
55
-20
-20
5.5
+85
+105
V
mA
° C
° C
24.050
0.02
+15
24.250
-30
GHz
MHz / °  C
dBm
dBm
20
6
8.6
-112
-127
20
dB
dB
dBi
dBm
dBc
m
1.28
0
20
none
256 point FFT
12.8
143
400
kHz
km / h
ms
Wφ
Wθ
Dφ
Dθ
VOH
VOL
VIH
VIL
IOH, IOL
VAin
Zin
80
34
-12 -20
-12 -20
°
°
dB
dB
2.1 2.6
V
0.3
0.64
V
2.0 3.3 V
-0.3 0.8 V
-20 20 mA
0 3V
200 kΩ
25 × 25 × 6.5
6.5
8 pin 2.54 mm
mm³
g
     © RFbeam Microwave GmbH | Schuppisstrasse 7 | CH-9016 St. Gallen | www.rfbeam.ch | K-LD 2 | data sheet
09/2018 - Revision B | Page 2 / 20


Part Number K-LD2
Description radar transceiver
Maker RFbeam Microwave
Total Page 20 Pages
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