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  • solution00011
  • Created: Monday, 7th April 2008
  • Classification: Hardware » Modules » RF Power
  • Viewed: 794 times

What distance can the radio cover?

This largely depends on the antenna being used, module output power and environment. We have seen reliable transmission at distances up to 1km in a clear-field line of sight for a JN5139 standard power module with SMA antenna. Measured in an office environment where reflections and interference are present, a typical range would be between 30m and 50m. This can be dependent on the positioning of the node, office layout and construction of the internal walls. The measured clear-field line of sight ranges for the various Jennic JN5139 modules available can be seen in Table 1 below.

 
Module
 

Nominal Power Level (dBm)
 

Range*3 (km)
JN5139-xxx-M00 Ceramic Antenna 0 0.33
JN5139-xxx-M00 Ceramic Antenna (with boost mode) 2 0.43
JN5139-xxx-M01 Standard module*1 0 1.07
JN5139-xxx-M02 High power module (ETSI power level)*1*4 8 2.42
JN5139-xxx-M02 High power module*1 14 4.18
JN5139-xxx-M02 High Power module*1
 
17
 6.04*2
JN5139-DR1063_V1.3 low cost module 0 0.55
JN5139-DR1064_V1.0 Single Ended antenna module (SEA) 0 0.55
Table 1: Jennic Module Range Test Results
*1 Antenova Titanis SMA antenna used.
*2 Predicted range at full power based upon extrapolation from range attained at 14dBm
*3 All results measured for a 1% packet error rate. Total of 10000 packets sent.
*4 European ETSI requirements restrict transmit power output to 10dBm (including the antenna gain [2dBi]).



To test the range of Jennic modules the JN-AN-1006 Packet Error Rate testing application can be used.

The JN-RD-6005 Single Ended PCB Antenna Module Reference Design is available here
The JN-RD-6003 Low Cost Module Reference Design is available here
The JN-AN-1059 Deployment guidelines for IEEE 802.15.4/ZigBee wireless networks are available here