10.3.2.1 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.
provides a summary of the antenna guidelines to follow with the CC2652PSIP module.
Table 10-2. Antenna Guidelines
SR NO.
GUIDELINES
1
Place the antenna on an edge of the PCB.
2
Ensure that no signals are routed across the antenna elements on any PCB layer.
3
Most antennas, including the PCB 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.
4
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.
5
Ensure that the antenna characteristic impedance is 50-Ω as the module is designed for a
50-Ω system.
6
In case of printed antenna, ensure that the simulation is performed considering the
soldermask thickness.
7
For good RF performance ensrue that the Voltge Standing Wave Ration (VSWR) is less
than 2 across the frequency band of interest.
9
The feed point of the antenna is required to be grounded. This is only for the antenna
type used on the
. See the specific antenna data sheets for
the recommendations.
lists the recommended antennas to use with the CC2652PSIP module. Other antennas may be
available for use with the CC2652PSIP module. Please refer to to the
CC2652RSIP OEM integrators guide
for a
list of approved antennas (and antenna types) that can be used with the CC2652RSIP module.
Table 10-3. Recommended Components
CHOICE
ANTENNA
MANUFACTURER
NOTES
1
2.4-GHz Inverted F
Antenna
Texas Instruments
for details of the Antenna
implementation and PCB requirements.
SWRS263A – FEBRUARY 2021 – REVISED JUNE 2022
Copyright © 2022 Texas Instruments Incorporated
53
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