SWRS243B February 2020 – May 2021 CC3235MODAS , CC3235MODASF , CC3235MODS , CC3235MODSF
Refer to the PDF data sheet for device specific package drawings
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 10-3 provides a summary of the recommended antennas to use with the CC3235MODx module.
|1||Place the antenna on an edge or corner of the PCB.|
|2||Ensure that no signals are routed across the antenna elements on all the layers of the PCB.|
|3||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.|
|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 impedance is 50 Ω because the module is rated to work only with a 50-Ω system.|
|6||In case of printed antenna, ensure that the simulation is performed with the solder mask in consideration.|
|7||Ensure that the antenna has a near omnidirectional pattern.|
|8||The feed point of the antenna is required to be grounded. This is only for the antenna type used on the CC3235MODx Launchpad. See the specific antenna data sheets for the recommendations.|
Table 10-4 lists the recommended antennas to use with the CC3235MODx module. Other antennas may be available for use with the CC3235MODx modules.
|1||M830520||Ethertronics||Can be placed on edge of the PCB and uses much less PCB space|