K-LC3_V2 RADAR TRANSCEIVER

Datasheet

Application Notes

Sensitivity and Maximum Range

The values indicated here are intended to give you a 'feeling' of the attainable detection range with this

module. It is not possible to define an exact RCS (radar cross section) value of real objects because

reflectivity depends on many parameters. The RCS variations however influence the maximum range

Maximum range for Doppler movement depends mainly on:

- Module sensitivity

S:

-104dBc (@0.5kHz IF Bandwidth)

- Carrier frequency

24.125GHz

- Radar cross section RCS ("reflectivity") of the object

The famous "Radar Equation" may be reduced for our K-band module to the following relation:

4

40

10

0167

.

0









s

r

Using this formula, you get an indicative detection range of

- 7 meters for a moving person.

- > 15 meters for a moving car

Please note, that range values also highly depend on the performance of signal processing,

environment conditions (i.e. rain, fog), housing of the module and other factors.

For simple detection purposes (security applications e.g.) without the need of speed measurements,

range may be enhanced by further reducing the IF bandwidth. With 250Hz bandwidth and a simple

comparator, we get already a 12m frontal detection range.

Datasheet Revision History

Version

Date

Changes

1.0

23-Jul-2014

initial release

1.1

02-Nov-2018

Changed footer to new address

© RFbeam Microwave GmbH, Schupisstrasse 7, CH-9016 St. Gallen

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RFbeam does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and

RFbeam reserves the right at any time without notice to change said circuitry and specifications.