PLANAR TRANSCEIVERS
TM

Fixed Frequency®

MDU1020 SeriesFeatures

Low cost
Small and Flat ProfileRugged, Reliable Construction
Low Power Consumption
High Sensitivity
Meet FCC Part 15 reqts.

Description
The MDU (Motion Detector Unit) is an X-Band
microwave transceiver that utilizes the Doppler shift
phenomenon to "sense" motion. The unit is available
with either of two physically interchangeable forms;
A rugged cast metal housing or a lightweight plastic
housing.
The circuit features a dielectric resonator stabilized
FET oscillator, which provides stable operation over abroad temperature range in either CW or low duty
cycle pulse mode and a balanced mixer for enhanced
sensitivity and reliability.

Applications




Intrusion Alarms (Room, Vehicle)
Automatic Door Openers
Speed Measurement
Collision AvoidanceTraffic Control
Presence Sensing

This document only gives a general description of the product and shall not form part of any contract.
Microwave Solutions pursue a policy of continuous product improvement and reserve the right from time to time to amend the specifications of products.

Copyright  2008
Rev: 2009-02-10

Microsemi
Microwave Products75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748

Page 1PLANAR TRANSCEIVERS
Fixed Frequency®

TMMDU1020 Series

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 orvisual alarm signal and employs low cost surface mount manufacturing techniques which are field proven as
being rugged and reliable.
Electrical Characteristics
Transmitter
Frequency
Frequency Setting Accuracy
Power Output (Min.)
Operating Voltage
Operating Current (CW):::::::

see table
3MHz13dBm EIRP
+5V ±0.25V
60mA max.
40mA typ.
< -7dBm

Harmonic Emissions
Pulse Mode Operation
Average Current (5% DC): 2mA typ.
Pulse Width (Min.): 5µSec
Duty Cycle (Min.): 1%Receiver
Sensitivity (10dB S/N ratio): -86dBm: 10µV
Noise(Both in 3Hz to 80Hz bandwidth)
AntennaGain: 8dBi-3dB Beamwidth
E Plane: 72º
H Plane: 36ºMechanical Characteristics
Weight: see table
Tab Connections: 0.1” spacing
Environmental Characteristics
Power/Temp. Coefficient(over operating temp. range) : 3dB
Frequency/Temp. Coefficient(over operating temp. range) : 6.5MHz: -10ºC to +55ºC
Operating Temperature
Storage Temperature: -30ºC to +70ºC

ModelApplication

MDU1020

MDU1020

Copyright  2008
Rev: 2009-02-10

NOTES Detection range is dependent on size and reflectivity oftarget and S/N ratio
Doppler shift at 10.687GHz is 31Hz/m.p.h.
Unit functions over -30ºC to +70ºC but harmonics may
exceed specified levels.

Order CodeFrequency

WeightComments

USA, Canada
etc.

C900505
C900503
C900506

10.515GHz
10.525Ghz
10.535GHz

80 grams

USA FCC Part 15 Indoors
Metal Housing

USA, Canada
etc.

C900605
C900603
C900606

10.515GHz
10.525Ghz
10.535GHz

15 grams

USA FCC Part 15 Indoors
Plastic Housing

Microsemi
Microwave Products

75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748

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