MDU2750L

The Microwave Solutions MDU2750L Motion Detector Unit is a low power X-Band microwave transceiver that utilises the Doppler shift phenomenon to "sense" motion. The reduced current consumption enables the use of this module in battery powered applications (with suitable duty cycle management) 
£20.00

In stockAvailability: In stock


Details

The Microwave Solutions MDU2750L Motion Detector Unit is a low power X-Band microwave transceiver that utilises the Doppler shift phenomenon to "sense" motion. The reduced current consumption enables the use of this module in battery powered applications (with suitable duty cycle management) 

The unit, contained in a cast metal housing, features a dielectric resonator stabilised FET oscillator, which provides stable operation over a broad temperature range in either CW or low duty cycle pulse mode and a balanced mixer for enhanced sensitivity and reliability. This module family is available with either a +3V or +5V supply voltage.

Click here to download the product datasheet.


Additional Information

Introduction

Operation

The basic principle of operation consists of detecting the frequency shift between a transmitted and a received signal reflected back from a moving object within the field of view of the unit. The unit produces a low level output signal which can be amplified and processed to provide an audible or visual alarm signal and employs low cost surface mount manufacturing techniques which are field proven as being rugged and reliable.


Key Features

  • Low Cost
  • High Sensitivity
  • High Stability
  • Patch Antenna
  • Small and Flat Profile
  • Rugged Reliable Construction
  • RoHS Compliant
  • Meets EN300 440 v1.6.1 & FCC 15.245


Applications

  • Intrusion Alarms (Rooms, vehicles)
  • Automatic Door Openers
  • Speed Measurement
  • Collision Avoidance
  • Traffic Control
  • Presence Sensing
Characteristics

Electrical Characteristics

Transmitter

 

Frequency See available modules tab
Frequency Setting Accuracy 3 MHz
Power Output (Min.) 10 dBm EIRP
Operating Voltage +5 V ± 0.25 V
Operating Current (CW) 25mA (max)
  22mA (typ)
Harmonic Emissions <-30dBm



Pulse Mode Operation

 

Average Current (5% DC) 1 mA typ.
Pulse Width (Min.) 5 μsecs
Duty Cycle (Min.) 1%



Receiver 3Hz to 80Hz bandwidth

 

Sensitivity (10dB S/N ratio) -83 dBm (C920xxx)
  -82 dBm (C923xxx)
Noise <10μV



Antenna: Standard

 

Gain 8 dBi
-3 dB Beamwidth  
E Plane 72o
H Plane 36o

 


Mechanical Characteristics

 

Weight 16g
Tab Connections 0.1" spacing
Metallisation Sn+Ni+Cu
  JEDEC JESD97 (e2)



Environmental Characteristics

 

RoHS Compliant  
Power/Temp. Coefficient (over operating temp. range) 3 dB
Frequency/Temp. Coefficient (over operating temp. range) 5 MHz
Operating Temperature -20°C to +55°C
Storage Temperature -40°C to +80°C



Available Modules
Country Frequency Product Code
UK 10.587 GHz (5V) C920201
USA, Belgium, Holland, Italy,   10.525 GHz (5V) C920202
UK 10.587 GHz (3V) C923201
USA, Belgium, Holland, Italy,   10.525 GHz (3V) C923202
Coverage Pattern
Outline Drawing

You can view the full outline drawing here