CC3220MOD Datasheet, PDF (68/82 Pages) Texas Instruments – SimpleLink Wi-Fi CERTIFIED Wireless Module Solution

CC3220MOD
SWRS206 – MARCH 2017
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7.3.3 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 are the keys to increased range and
data rates. Table 7-2 provides a summary of the recommended antennas to use with the CC3220MODx
module.
SR NO.
1
2
3
4
5
6
7
8
9
Table 7-2. Antenna Guidelines
GUIDELINES
Place the antenna on an edge or corner of the PCB.
Ensure 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 LaunchPad™, 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 must
be tuned for best return loss when the complete board is assembled. Any plastics or
casing must also be mounted while tuning the antenna because this can impact the
impedance.
Ensure that the antenna impedance is 50 Ω because 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 omnidirectional pattern.
The feed point of the antenna is required to be grounded. This is only for the antenna
type used on the CC3220MODx Launchpad. See the specific antenna data sheets for the
recommendations.
To use the FCC certification of the module, refer to CC31xx and CC32xx Radio
Certifications wiki page on CC3220MODx Radio certification
Table 7-3 lists the recommended antennas to use with the CC3220MODx module.
CHOICE
1
Table 7-3. Recommended Components
PART NUMBER
AH316M245001-T
MANUFACTURER
Taiyo Yuden
NOTES
Can be placed on edge of the PCB and uses much
less PCB space
68
Applications, Implementation, and Layout
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