Microwave Sensors

The Microwave Solutions range of microwave Doppler Motion Detector Units, operating at X-Band (10GHz) and K-Band (24GHz), can be incorporated into a wide range of sensors and are suitable for applications including - Lighting and Energy Management - Home Automation - Intrusion Alarms (Room, Vehicle) - Collision Avoidance - Automatic Door Openers - Traffic Control - Speed Measurement - Presence Sensing

The Motion Detector Unit (MDU) is a miniature microwave Doppler radar sensor optimised for low power consumption and low cost, with variants for short range <30m, long range >30m and very long range 50m+ detection requirements. MDUs utilise the Doppler shift phenomenon to "sense" motion and are available in a variety of different formats.

How does it work? The MDU emits a low level microwave signal which is reflected from all objects within its coverage area. The MDU compares the transmitted and received frequencies and produces an output signal, the frequency of which is proportional to the velocity of any object moving towards or away from the sensor. Signal processing circuitry (not provided with the unit) amplifies this signal and analyses its frequency spectrum. If the signal strength is above a threshold level, and has the required frequency spectrum an output signal can be generated. In order to conserve power it is usual for the MDU to be pulsed on and off rapidly so that it is only transmitting for approximately 5% of the time. The circuit 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.

If you don't want to develop your own electronics, then we also offer a range of complete detectors that provide digital outputs suitable for interfacing to your own system.

If you don't want to develop your own electronics, then we also offer a range of complete detectors that provide digital outputs suitable for interfacing to your own system.

MDU1100T Tuneable module for direction sensing and ranging applications
  • Frequency: 10.587 GHz UK
  • Power: 10 dBm EIRP
MDU1720 Small pcb module; only suitable for US indoor use
  • Frequency: 10.525 GHz USA
  • Power: 13 dBm EIRP
MDU1750 Most popular unit for European security equipment applications
  • Frequency: 10.587 GHz UK
  • Power: 10 dBm EIRP
MDU2000 Miniature module optimised for energy management applications
  • Frequency: 10.587 GHz UK
  • Power: 5 dBm EIRP
MDU2120 MDU
  • Frequency: 10.587 GHz UK
  • Power: 10 dBm EIRP
MDU2400 Small module for short range applications; optimised for corner mount
  • Frequency: 24.2 GHz UK
  • Power: 13 dBm EIRP
MDU2400-3 New - small module for short range applications; optimised for corner mount; 3V operation possible for wireless and battery applications
  • Frequency: 24.2 GHz UK
  • Power: 13 dBm EIRP
MDU2410 Small module for short range high sensitivity applications
  • Frequency: 24.2 GHz UK
  • Power: 15 dBm EIRP
MDU2430 New - optimised for long range/narrow beam corridor applications
  • Frequency: 24.2 GHz UK
  • Power: 13 dBm EIRP
MDU2430-3 New - optimised for long range/narrow beam corridor applications; 3V operation possible for wireless and battery applications
  • Frequency: 24.2 GHz UK
  • Power: 13 dBm EIRP
MDU2440 New - designed for ceiling mount applications up to an installation height of 3.5m
  • Frequency: 24.2 GHz UK
  • Power: 10 dBm EIRP
MDU2440-3 New - designed for ceiling mount applications up to an installation height of 3.5m; 3V operation possible for wireless and battery applications
  • Frequency: 24.2 GHz UK
  • Power: 10 dBm EIRP
MDU2750 MDU
  • Frequency: 10.587 GHz UK
  • Power: 10 dBm EIRP
MDU2750L Low power 3V operation possible for wireless and battery applications
  • Frequency: 10.587 GHz UK
  • Power: 10 dBm EIRP
MDU2750LCM Low power 3V operation possible for wireless and battery applications; optimised for ceiling mount
  • Frequency: 10.587 GHz UK
  • Power: 9 dBm EIRP
MDU4200 Long range module for security or traffic applications where direction information is not required
  • Frequency: 10.587 GHz UK
  • Power: 10 dBm EIRP
MDU4210 Tuneable long range module for traffic monitoring or external security applications
  • Frequency: 10.587 GHz UK
  • Power: 10 dBm EIRP
MDU4220 Long range direction sensing module for traffic monitoring or external detection
  • Frequency: 10.587 GHz UK
  • Power: 20 dBm EIRP
MDU6220 Very long range direction sensing module for traffic monitoring or external detection
  • Frequency: 10.587 GHz UK
  • Power: 20 dBm EIRP
D200100 People detector suitable for use in most countries
  • Frequency: 24.10 GHz
  • Power: 12m approx
D920603 People detector suitable for US and Canada
  • Frequency: 10.525 GHz
  • Power: 20m approx
D920801 People detector suitable for UK use
  • Frequency: 10.587 GHz UK
  • Power: 20m approx
D920802 People detector suitable for use in Holland; Belgium; Spain; USA; Canada; South Africa; Australia; Italy and others
  • Frequency: 10.525 GHz
  • Power: 20m approx
D920807 People detector suitable for use in France; Switzerland; Portugal and others
  • Frequency: 9.90 GHz
  • Power: 20m approx
D920809 Ceiling mount people detector suitable for UK use
  • Frequency: 10.587 GHz UK
  • Power: 5m diameter
D940801 Long range detector suitable for UK use
  • Frequency: 10.587 GHz UK
  • Power: 50m approx
D940802 Long range detector
  • Frequency: 10.525 GHz
  • Power: 50m approx