RF & Wireless Communication

A radio module with the appropriate radio protocol can be selected depending on the requirements for frequency, range, environmental conditions, data rates and available electric power.

In the near field of an electric noise source the electric field has a high impedance. A low impedant shielding cabinet covering the critical component will act as a sacrificial capacitor plate to divert to noise back to its reference  ground.

An RF Inductor is a specialized type of inductor designed to operate efficiently at radio frequencies (RF), typically ranging from a few MHz to several GHz. These components are crucial in wireless communication systems, RF filters, oscillators, and impedance matching networks.

If a radio module is installed in a conductive casing, for example to protect it from EMC or to use a robust metal casing, the RF signal can be routed through the casing via SMA coaxial connectors. A rod antenna with an SMA connector is ideally suited for mounting on the casing.

UMRF connectors offer electromechanical connections between PCBs in a small constricted space, efficient matching and EoL testing of the chip antenna.

The SMA coaxial connector connects the rod antenna to the PCB electromechanically.

A Balun (short for Balanced-Unbalanced) is a type of transformer used to convert between balanced and unbalanced signals. This is crucial in RF systems where antennas (balanced) need to interface with transmission lines or circuits (unbalanced).

An RF filter is a passive electronic component that allows certain frequencies to pass while blocking others. It helps eliminate unwanted signals and noise, ensuring clean and reliable communication.

Place the crystal (XTAL) as close as possible to the IC. If feasible, connect the crystal housing to GND. A via fence helps reduce coupling to the ground plane. Alternatively, an oscillator can be used.