Data Sheet

© RFbeam Microwave GmbH | Schuppisstrasse 7 | CH-9016 St. Gallen | www.rfbeam.ch | K-LC6 | data sheet 02 / 2020 – Revision E | Page 6 / 10
OUTLINE DIMENSIONS
Figure 3: Outline dimensions
X1
X2
APPLICATION NOTES
Sensitivity and Maximum Range
The values indicated here are intended to give you a
‘feeling’ of the attainable detection range with this mo-
dule. It is not possible to dene an exact RCS (radar
cross section) value of real objects because reectivity
depends on many parameters. The RCS variations ho-
wever inuence the maximum range only by
4
√σ
4
√
σ
r = 0.0167 · 10 ·
-s
40
.
Maximum range for Doppler movement depends
mainly on:
– Module sensitivity
S: -126dBc ( @ 1 kHz IF Bandwidth)
– Carrier frequency
f
TX
: 24.125GHz
– Radar cross section RCS “reectivity”
of the object
σ
1)
: 1 m² approx. for a moving person
> 50 m² for a moving car
note
1)
RCS indications are very inaccurate and may vary
by factors of 10 and more.
The famous “Radar Equation” may be reduced for our
K-band module to the following relation:
4
√σ
4
√
σ
r = 0.0167 · 10 ·
-s
40
Using this formula, you get
an indicative detection range of:
– 24 meters for a moving person.
– 62 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.
With K-LC6, you can achieve a maximum range of
more than 100 m when using high resolution AD-con-
verters and selective FFT algorithms.