CC3100MOD_15 Datasheet, PDF (28/41 Pages) Texas Instruments – CC3100MOD SimpleLink™ Certified Wi-Fi® Network Processor Internet-of-Things Module Solution for MCU Applications

CC3100MOD
SWRS161 – DECEMBER 2014
www.ti.com
6.3.2 Antenna Placement and Routing
The antenna is the element used to convert the guided waves on the PCB traces to the free space
electromagnetic radiation. The placement and layout of the antenna is the key to increased range and
data rates.
The following points need to be observed for the antenna.
SR NO.
1
2
3
4
5
6
7
8
9
GUIDELINES
Place the antenna on an edge or corner of the PCB
Make sure that no signals are routed across the antenna elements on all the layers of the
PCB
Most antennas, including the chip antenna used on the booster pack require ground
clearance on all the layers of the PCB. Ensure that the ground is cleared on inner layers
as well.
Ensure that there is provision to place matching components for the antenna. These need
to be tuned for best return loss once the complete board is assembled. Any plastics or
casing should also be mounted while tuning the antenna as this can impact the
impedance.
Ensure that the antenna impedance is 50 Ω as the device is rated to work only with a
50-Ω system.
In case of printed antenna, ensure that the simulation is performed with the solder mask
in consideration.
Ensure that the antenna has a near omni-directional pattern.
The feed point of the antenna is required to be grounded
To use the FCC certification of the Booster pack board, the antenna used should be of
the same gain or lesser. In addition, the Antenna design should be exactly copied
including the Antenna traces.
CHOICE
1
2
Table 6-1. Recommended Components
PART NUMBER
AH316M245001-T
MANUFACTURER
Taiyo Yuden
RFANT5220110A2T
Walsim
NOTES
Can be placed on edge of the
PCB and uses very less PCB
space
Need to place on the corner of
PCB
28
Applications, Implementation, and Layout
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