PLANAR TRANSCEIVERS
TM
®
Tunable
MDU1020 Series
Features
Low cost
Small and Flat Profile
Rugged, Reliable Construction
Low Power Consumption
High Sensitivity
Electronically tunable
Meets FCC Part 15 Requirements
Description
The MDU (Motion Detector Unit) is an X-Band
microwave transceiver that utilizes the Doppler shift
phenomenon to "sense" motion.
The unit, contained in a lightweight plastic housing,
features an electronically tunable dielectric resonator
stabilized 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.
Applications
Data transmission
Range (distance) measurement
Intrusion Alarms (Room, Vehicle)
Automatic Door Openers
Speed Measurement
Collision Avoidance
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 Products
Page 1
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
PLANAR TRANSCEIVERS
TM
®
Tunable
Operation
MDU1020 Series
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. This produces a low level output signal that
can be amplified and processed.
The tunable transceiver incorporates provision for electronically tuning the unit over a frequency range of approximately
5MHz. This enables frequency modulation to be applied to the transceiver or fsk ranging to be performed.
The unit employs low cost surface mount manufacturing techniques that are field proven as being rugged and reliable.
The following patents (and others) apply to this product: US Patents 6,064,276, 5,262,783, 5,208,567
Electrical Characteristics
Transmitter
Frequency
Frequency Setting Accuracy
Power Output (Min.)
Operating Voltage
Operating Current (CW)
Harmonic Emissions
Electronic Tuning Range
:
:
:
:
:
:
:
:
see table
3MHz
13dBm EIRP
+5V ±0.25V
60mA max.
45mA typ.
< -10dBm
> 4MHz
Environmental Characteristics
Power/Temp. Coefficient
(over operating temp. range) : 3dB
Frequency/Temp. Coefficient
(over operating temp. range) : 6.5MHz Operating
Temperature :
-10ºC to +55ºC Storage
Temperature :
-30ºC to +70ºC
Outline Drawing
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)
Antenna
Gain
: 8dBi
-3dB Beamwidth
: Tab @bottom
Orienation
Vertical
:36deg
Horizontal
:72deg
Mechanical Characteristics
Weight
: 15grams
Tab Connections
: 0.1” spacing
Notes:
Detection range is dependent on size and reflectivity of target
and S/N ration.
Doppler shift at 10.525 GHz is 31Hz/m.p.h.
Unit functions over -30ºC to +70ºC but harmonics
may exceed specified levels
.
Model
MDU1020
Application
USA
Order Code
C900662
Frequency
10.525Ghz
Comments
Suitable for US FCC Part 15 “Outdoor”
intermittent applications
Copyright
2008
Rev: 2009-02-10
Microsemi
Microwave Products
Page 2
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
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