Wi.232FHSS-250-FCC-RA-R Radiotronix, Wi.232FHSS-250-FCC-RA-R Datasheet - Page 33

• Manufacturer Part Number: Wi.232FHSS-250-FCC-RA-R
• Description: RF Modules & Development Tools 250mW module W/ right Angl SMA connt
• Manufacturer: Radiotronix

Specifications of Wi.232FHSS-250-FCC-RA-R

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: WI232FHSS-250-FCC-RA-R

WI.232FHSS-25-R/ WI.232FHSS-250-R DATASHEET
3.7. Antenna
The module is designed to work with any 50-ohm antenna, including PCB trace antennas.
We are often asked to recommend the best antenna to use with our modules. As a rule, either a ¼ wave
whip or ½ wave dipole antenna paired with a good, solid ground plane are good choices (Radiotronix part
numbers ANT 915-03A/ANT-915-02A for ¼ wave whip, SMA and RP-SMA, respectively and ANT-915-
09A/ANT-915-06A for ½ wave dipole, SMA and RP-SMA, respectively). If the application has a small
ground plane, the ½ wave dipole is a better choice. However, many embedded applications cannot
support an externally mounted antenna. If this is the case, a PCB antenna must be used. The designer
can either use an off-the-shelf PCB antenna, such as the Fractus FR05-S1-R-0-105, or design a trace
antenna.
Note: Antenna design is difficult and can severely impair the module’s performance if done incorrectly. As
such, we strongly encourage all of our customers to use off-the-shelf antennas whenever possible.
Alternatively, Radiotronix offers design services and can assist with your PCB layout.
3.8. Link Budget, Transmit Power, and Range Performance
A link budget is the best figure of merit for comparing wireless solutions and determining how they will
perform in the field.
In general, the solution with the best link budget will deliver the best line-of-sight range performance.
Improving the link budget by increasing the receiver sensitivity will result in lower power consumption while
improving the link budget by increasing the transmit power will result in more robust performance in the
presence of an on-channel interferer or multi-path interference.
3500
3000
2500
2000
1500
1000
500
Figure 14: Typical Analog RSSI response (Wi.232FHSS-25-R)
0
-102
-98
-94
-90
-86
-82
-78
-74
-70
-66
RF IN (dBm)
-62
-58
-54
32
-50
-46
-42
-38
-34
-30
High Sens
High IIP3
-26
-22
Revision 1.1.0