mrf89xam8a Microchip Technology Inc., mrf89xam8a Datasheet - Page 7

• Manufacturer Part Number: mrf89xam8a
• Description: 868 Mhz Ultra-low Power Sub-ghz Transceiver Module
• Manufacturer: Microchip Technology Inc.

MRF89XAM8A
1.2
Mounting Details
The MRF89XAM8A is a surface mountable module, the
module dimensions are illustrated in
Figure
1-3. The
module PCB is 0.032" thick with castellated mounting
holes on the edge.
Figure 1-4
is the recommended host
PCB footprint for the MRF89XAM8A.
The MRF89XAM8A has an integrated PCB antenna.
For the best performance, follow the mounting details
as illustrated in
Figure
1-5. It is recommended that the
module be mounted on the edge of the host PCB and
an area around the antenna, approximately 3.4" (8.6
cm), be kept clear of metal objects for best
performance. A host PCB ground plane around the
MRF89XAM8A acts as a counterpoise to the PCB
antenna. Extend the host PCB top copper ground plane
under and to the left and right side of the module at
least 0.4 inches (1 cm) for best antenna performance.
FIGURE 1-3:
MODULE DETAILS
Preliminary
© 2010 Microchip Technology Inc.
DS70651A-page 5