ST Electronics DF100-0 K-Band Doppler RF Transceiver Module User Manual DF100 0

ST Electronics (Satcom & Sensor Systems) Pte Ltd K-Band Doppler RF Transceiver Module DF100 0

Users Manual

1 of 6DF100-0K-Band Doppler RF Transceiver ModuleUsers Manual1. Introduction2. User interface and mounting6-way 2.54 mm pin header is used for user interface and the four mounting holes of M3 screwsize are as shown in Figure 23. Power SupplyThe recommended power supply is 5V. The minimum input voltage is 3.6 V and the maximumis 9 V. As there is a built-in voltage regulation in DF100-0 sensor module, fluctuation in thepower supply will not affect the performance of the module.DF100-0 series of microwave motion sensor modules are K-Band Bi-static DRO Dopplertransceiver front-end module. These modules are designed for speed detection with directionof motion recognition, traffic applications and other innovative ideas.The module consists of Dielectric Resonator Oscillator (DRO), balanced mixers, and patchantenna, built-in LNA for high sensitivity and a pre-amplifier.Pin definition1: ENABLE2: +5V typical3: GROUND4: I5: Q6: NOT IN USEFigure 2: Pin definition and mounting holesMountingholessize M2.5,depth 3.5 mm
2 of 6DF100-0K-Band Doppler RF Transceiver ModuleUsers Manual4. Using ENABLE (pin 1)When this pin is driven LOW (GND), this will activate the DRO and hence transmit the signal.On the other hand, when it is driven HIGH (typically +5V), the DRO will be de-activated. Thisfeature can be used to reduce power consumption by introducing pulse to this pin.5. Radiation PatternThe module to be mounted with the antenna patches facing to the desired detection zone. Theuser may vary the orientation of the module to get the best coverage. The radiation patterns ofthe antenna and their 3dB beamwidth are shown in below diagram.E-plane-35 -30 -25 -20 -15 -10 -5 0-35-30-25-20-15-10-50-35-30-25-20-15-10-50-35-30-25-20-15-10-500306090120150180210240270300330H-plane-35 -30 -25 -20 -15 -10 -5 0-35-30-25-20-15-10-50-35-30-25-20-15-10-50-35-30-25-20-15-10-500306090120150180210240270300330Figure 3: Beam pattern of DF100-0ElevationAzimuth
3 of 6DF100-0K-Band Doppler RF Transceiver ModuleUsers Manual6. Output SignalsDoppler shift - Doppler-shift signals of ideally 90o phase difference between them appears atI & Q channels when movement is detected. These signals are pre-amplified by built-in IFamplifiers for better sensitivity and better isolation. The magnitude of the Doppler Shift afterthese amplifications is typically within 1mV peak to peak. Frequency of Doppler shift isproportional to velocity of motion.The magnitude of RF signal received by the Doppler-based transceiver depends on thedetection distance and the Radar Cross Section (RCS) of the detected objects.The lagging/leading phase difference between I and Q signals provides information on thedirection of motion (whether approaching or receding)8. Radiation SafetyMicrowave radiation from the module is well below established safety standards for generalpublic environment, like ANSI C95.1-1991 of USA and NRPB-G11 of United Kingdom.9. HandlingThe module has been fully tested to specifications. Opening, tightening or loosening thechassis may result in performance deterioration.The module is an electrostatic sensitive device (ESD). Precautions shall be observed forhandling and assembly.10. Product SupportPlease contact our product support engineers in the factory for technical assistance whenevernecessary.Product Support (Microwave Sensors)Tel: (65) 568 7414Fax: (65) 567 6370e-mail: agilsense@stee.stengg.comThis device complies with part 15 of FCC Rules.Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2)this device must accept any interference received, including interference that may cause undesired operation.Any changes or modifications to ST Electronics equipment not expressly approved by ST Electronics could voidthe user authority to operate the equipment.

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