RX2-433-14-5V Просмотр технического описания (PDF) - Radiometrix Ltd
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RX2-433-14-5V Datasheet PDF : 15 Pages
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Module mounting considerations
The modules may be mounted horizontally or vertically on an area of ground plane preferably close to
the antenna to minimise feed length. The receiver and it’s antenna should be kept away from sources of
interference (micro’s, SMPS etc.). The modules may be potted if required in a viscous compound which
can not enter the screen can..
Warning: Do NOT wash the modules. They are not hermetically sealed.
Fig. 7: module mounting options
Antenna requirements
Three types of integral antenna are recommended and approved for use with the module:
A. Helical antenna
0.5 mm enameled copper wire
close wound on 3.2 mm diameter former
RF
433 MHz = 24 turns
C2
C3 C4
B. Loop antenna
16.4cm
C. Whip antenna
RF -G ND
C1
Feed point 15% to 25% of total loop length
track width = 1mm
4 to 10 cm2 inside area
RF
wire, rod, PCB-track or a combination
of these three
RF
433 MHz = 16.4 cm total from RF pin.
Fig.8: Antenna
A
helical
Ultimate performance
**
Easy of design set-up
**
Size
***
Immunity proximity effects
**
Range open ground to similar antenna
200m
(for TX2-433-14-5V & RX2-433-14-5V)
Antenna selection chart
B
loop
*
*
**
***
100m
C
whip
***
***
*
*
300m
Radiometrix Ltd., TX2 & RX2 Data Sheet
page 7
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