RF Switch

RF Switch or Microwave Switch

An RF (Radio Frequency) and microwave switch is a device to route high frequency signal through transmission paths. RF and microwave switches are used extensively in microwave test systems for signal routing between instruments and devices under test (DUT). Incorporating a switch into a switch matrix system enables you to route signals from multiple instruments to single or multiple DUTs. This allows multiple tests to be performed with the same setup, eliminating the need for frequent connects and disconnects. The entire testing process can be automated, increasing the throughput in high-volume production environments.

Similar to electrical switches, RF and microwave switches come in different configurations providing the flexibility to create complex matrices and automated test systems for many different applications. Below is a list of typical switch configurations and usage:

• Single-pole-double-throw (SPDT or 1:2) switches route signals from one input to two output paths.

• Multiport or single-pole-multiple-throw (SPnT) switches allow a single input to multiple (three or more) output paths.

• Transfer or double-pole-double-throw (DPDT) switches can be used to switch between two inputs and two outputs, as a drop-out switch, for signal reversal, or to bypass a test component.

• Bypass switches insert or remove a test component from a signal path.