ST Electronics HB100 X-Band Microwave Motion Sensor Module User Manual

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Document ID	1344546
Application ID	/H81IjCKVKLAXBW96CTFQw==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	50.32kB (628982 bits)
Date Submitted	2010-09-16 00:00:00
Date Available	2010-10-31 00:00:00
Creation Date	2010-09-02 09:18:46
Document Lastmod	0000-00-00 00:00:00
Document Title	User Manual

, I
H B100
I ense X-Band Microwave Motion Sensor Module
~ User Manual
Vl.02
1. Introduction
HB Series of microwave motion sensor module are X-Band Bi-
Static DRO Doppler transceiver front-end module. These modules
are designed for movement detection, like intruder alarms,
occupancy modules and other innovative ideas.
Moro
Oscillator
The module consists of Dielectric Resonator Oscillator (DRO),
microwave mixer and patch antenna (see Diagram A).
This Application Note highlights some important points when
designing-in HB 100 module. Most of the points are also
applicable to other models" in this series.
Diagram A: Block Diagram
2. Mount
Header Pins can be used to connected the terminals (+5V, IF, GND) to the amplifier circuit as well as
mounting Support. Other mounting methods may be used,
Wave~solder the module onto PCBA is possible but processes has to be evaluated to prevent
deterioration. No-cleaning process is recommended.
Caution must be taken to avoid pressure or stresses applying to the chassis of the module as it may
cause performance deterioration.
'_' “fl HEADER PIN
3. Before Power U )
Connect the power supply, Ground and amplifier
circuitry at the designed terminals. Designation of
the connection terminals are printed on the PCB
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User Manual
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4. Power Su tly
The module operates at +5 Vdc for Continious wave (CW) operation (see Annex 1).
The module can be powered by +5V low duty cycle pulsed trains in order to reduce its power
consumption. Sample & Hold circuit at the IF output is required for pulse operation (see Annex 2).
5. Transmit Fre( uency
The transmit frequency and power of the module is set by factory. There is no user adjustable part in
this device.
The module is a low power radio device (LPRD) or intended radiator. Local radio communication
authority regulates use of such a device. Though user license may be exempted, type approval of
equipment or other regulation compliance may be required.
Annex 3 shown the allocated frequency in some countries.
6. Radiation Pattern
The module to be mounted with the antenna patches facing to the desired detection zone. The user may
vary the orientation of the module to get the best coverage. The radiation pattems of the antenna and
their half power beam width (HPBW) are shown in below diagram.
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. I ense X~Band Microwave Motion Sensor Module
User Manual
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7. Out mt Signals
Deppler shift - Doppler shifl output from IF terminal when movement is detected. The magnitude of
the Doppler Shift is proportional to reflection of transmitted energy and is in the range of microvolts
(uV). A high gain low frequency amplifier is usually connected to the IF terminal in order to amplify
the Doppler shift to a processable level (see Annex 1). Frequency of Doppler shift is proportional to
velocity of motion. Typical human walking generates Doppler shifl below 100 Hz. Doppler frequency
can be calculated by Doppler equation in Annex 4.
The Received Signal Strength (RSS) is the voltage measured of the Doppler shift at the IF output. The
RSS figure specified in the technical data sheet is level of a 25 Hz Doppler shift, generate from the
modulated microwave signal received at the received antenna, The received microwave signal is
attenuated to 93 dB. below the transmit microwave signal from the transmit antenna of the same unit.
The 93dB loss is the total losses combining two ways free space loss (82.4 dB for 30 meters at 10.525
GI—Iz), reflection less and absorption loss of the target, as well as other losses.
This RSS figure can be view as an approximation of the output signal strength for a human at 15 meters
away walking straight to the module at 1.28 km/hour.
Reflection of a human body is varied with the size of the body, clothing, apparels and other
environmental factors; RSS measured for two human bodies may vary by 50%.
Circuit designer must take note the maximum and minimum Received Signal Strength (RSS) specified
in technical data sheet, when designing the amplifier. Sensitive deviation between modules has to be
considered when setting amplifier gain or alarm threshold. On~production~line gain adjustment may be
necessary if a narrow window for triggering threshold is required.
Noise - The noise figure specified in the technical data sheet is the noise measured in an Anechoic
chamber, that shield the unit-under-test from external interference, as well as reflection from surfaces.
Hence, the figure is only presenting the noise generated by the internal circuit itself,
Other than noises generate from internal electronic circuit, in actual applications, other noises may be
picked up from surrounding, or other part of the electronic circuit.
Specially attention has to be given to the interference pick up from fluorescent light, as the 100/120 Hz
noise is closed to the Doppler frequency generated by human movement
figment, ete),mar,,e¢n¢rat§§ his? magnitude of
ayout and time masking is necessary to prevent false
transient noise at the IF terminal. Careful PC
triggering.
DC Level - DC level (0.01 to 0.2 Vdc) exists at the IF terminal and its polarity can be positive and
negative. Its magnitude may vary over temperature. AC coupling is recommended for IF terminal
connection.
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A I I sense X-Band Microwave Motion Senslolrleolgg
User Manual
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8. Radiation Safety
Microwave radiation from the module is well below established safety standards for general public
environment, like ANSI C95.l-l991 ofUSA and NRPB-Gll ofUnited Kingdom
9. Handling
The module has been fully tested to specifications, Upon opening, tighten or loosen the chassis will
cause performance deterioration.
The module is an electrostatic sensitive device (ESD). Precautions shall be observed for handling and
assembly.
10. Product Su ) Jor
Please contact our product support engineers in the factory for technical assistance whenever necessary.
Product Support (Microwave Sensors)
Tel: (65) 6521 7948
Fax: (65) 6521 7801
e-mm'l: agilsense@stee.stengg.com
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This device complies with part 15 oi the FCC Rules. Operation is subject to the iollowlng two conditions: (1) This device may not
cause harmtul interference. and (2) this device must accept any interference received. Including Interference that may cause
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Caution: Any changes or modification cautions to this device not expllcltly approved by manufacturer could void your authority to
operate this equipment.
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Annex 1: Am I: er C cuit
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Annex 2. Am )lifi
This Capacitor is essential
for FCC conformance when
operate at Pulse mode
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HB100
X-Band Microwave Motion Sensor Module
User Manual
Vl.02
Anne 3: Allocated Fre - uenc for Movcmen Detection
Frequency Country Remark
9.35 Gl—lz Germany
9.9 GHz France, Italy
10.525 GHz USA, Belgium, Netherlands
10.587 GHz UK Outdoor & Indoor applications
10.687 GHZ UK Indoor applications ONLY
Note:
1. Though same frequency is allocated in some countries, national regulations may specify different
EIRP, spurious emission or other requirements.
2. EN 300 440 is the recommended harmonized standard for European Community, member country
may adopt their own national regulation
3. The regulations are subjected to change from time to time, please contact appropriate authorities for
full and up-to-dated information.
4. Useful websites:
Agency Website
The Code of Federal Regulations, USA
Imp://www,aocess.gpo.gov/cgi-
bin/cfrassemble.cgi?title=199847
The European Radiocommunication Office
httpzl/wwwterook/
The Radiocommunications Agency , UK
http://wwwtradio,gov.uk/
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User Manual
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Annex Do ler uution
Fd = 2V(
, c
jCosQ
Where
Fd = Doppler frequency
V = Velocity of the target
F. = Transmit frequency
0 = Speed of light (3 x IOXm/sec)
9 = The angle between the target moving direction and the axis of the module.
If a target is moving straight toward or away from HBIOO (E = 10.525 GHz) The formula is
simplified to:
Fd = 19.49V (Velocity in kin/hour) or 31.36V(Vin mile per hour)
Conversion factor for other frequencies are shown as below:
Frequency Fd (V in Kin/hr) Fd (Vin mph)
9.35 GHz 173 IV 27.85V
9.9 GHz 18.33V 29.49 V
10.525 Gl—[z 19.49V 31.36V
10.587 GHz 19.60V 31.54V
10.687 GHz 19,79V 31.84V
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