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Precision Positioning
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Doppler Applications
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Suitable for
outdoor operation, this transceiver is
enclosed in an aluminium can with a silicone face. Two wires extend from
the back, these should be connected to a suitable signal conditioner.
The red wire extending from the back is the signal wire. The black
wire is the return wire. Shield of the signal conditioner or
converter connects to the black wire, and the core to the red
wire.
- (size 50 x 75 mm)
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The Echo Sensitivity Graph shown below was acquired by
exciting the sensor using 50 waves @ 20 Volt (peak to peak) pulses
@43Khz. An
object round about 26cm dia. with flat orderly surface was placed
about 90 cm away. The graph below shows the result as the train of 50
waves bounces between transmitting and echo surfaces.
The Beam Angle was measured at a frequency of 43 Khz,
see resulting graph below.
- Below: Echo sensitivity versus frequency
- distance to target 25 cm, excitation 20V peak to peak using 50
waves
- Below: Phase Angle and Impedance versus Frequency
- The BLUE
line
represents phase angle and the RED line represents impedance
Specification |
Center Frequency
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43.0 ±5.0 (KHZ)
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Bandwidth
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4 KHZ
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Nominal Impedance
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700 ohm
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Capacitance
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5.7 nF
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Max. Driving Voltage
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700 Vpp 2% duty cycle
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Beam Width
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8.5° @ -3dB
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Sensor Window
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Silicone Rubber
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Operation Temperature
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0 to 70°C
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Storage Temparature
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-20 to 80°C
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