RF Antenna Switch to Alter the Transmit Path

Most cellular modules used in embedded platforms for 4G and 5G have a single signal transmit antenna connector.

Additional connectors are used to increase the receive diversity or download data speed. Although they are classified as MIMO (Multiple Input, Multiple Output) devices, in reality, they are SIMO (Single Input, Multiple Output) because only one antenna can be used for transmission at any given time

RF Transmit Part

In applications where the main transmit antenna can be damaged or obstructed, it is essential to be able to quickly and easily switch the RF signal path from the main antenna to the diversity antenna without interrupting the service. The RF switch allows the module to transmit on multiple antennas by switching between them. This enables the module to provide better signal strength and stability, as well as increased data.

RF Switch

The RF switch is a key component in cellular antenna redundancy, as it allows you to select which antenna you want to transmit on. This is important in order to ensure optimal performance and connectivity. By selecting the right antenna, you can ensure that your signal is strong and stable, providing you with the best possible connection.

Based on the main antenna signal performance you can change the transmit path of the radio frequency (RF) signal from one antenna to another at high speed to ensure the module does not disconnect from the network.

The selection of the RF switch is important and is based on many factors such as the number of cellular receive antennas, whether an external RF amplifier is used if there is a GPS module installed and so on.

The RF switch is a critical component in ensuring optimal performance for your cellular module and your embedded platform.

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