CC1312PSIP datasheet(60/80 Pages) TI1

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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. Table 10-2 provides a summary of the antenna guidelines to follow with the CC1312PSIPmodule.

Table 10-2. Antenna Guidelines

SR NO.

GUIDELINES

Place the antenna on an edge of the PCB.

Ensure that no signals are routed across the antenna elements on any PCB layer.

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.

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 characteristic impedance is 50-Ω as the module is designed for a

50-Ω system.

In case of printed antenna, ensure that the simulation is performed considering the

soldermask thickness.

For good RF performance ensrue that the Voltge Standing Wave Ration (VSWR) is less

than 2 across the frequency band of interest.

The feed point of the antenna is required to be grounded. This is only for the antenna type

used on theLP-EM-CC1312PSIP LaunPad™. See the specific antenna data sheets for the

recommendations.

Table 10-3 lists the recommended antennas to use with the CC1312PSIP module. Other antennas may be

available for use with the CC1312PSIPmodule. Please refer to the CC1312PSIP Manual Information for the End

User and OEM Installation Guide for a list of approved antennas (and antenna types) that can be used with the

CC1312PSIP module.

Table 10-3. Recommended Antennas

CHOICE

ANTENNA

MANUFACTURER

NOTES

Integrated PCB antenna

on the LP-EM-

CC1312PSIP

Texas Instruments

+2.7 dBi gain at 915 MHz, see the LP-EM-CC1312PSIP

refference design

External whip antenna

Pulse, W5017

+0.9 dBi gain at 915 MHz

Chip antenna

Johanson Technology,

0900AT43A0070

-0.5 dBi gain at 915 MHz

Chip antenna

Johanson Technology,

0915AT43A0026

+1.0 dBi gain at 915 MHz

Helical wire antenna

Pulse, W3113

+0.8 dBi gain at 915 MHz

CC1312PSIP

SWRS293 – NOVEMBER 2023

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