Coaxial Switches

Coaxial switches route RF and microwave signals between connectorized ports while maintaining impedance, isolation and repeatable insertion loss. They are used in test benches, antenna paths, receiver protection networks and redundant signal routes.

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Coaxial RF switch with connectorized RF ports

FAQ

How do insertion loss, isolation and crosstalk affect an RF switch route?

Insertion loss reduces the wanted path; isolation and crosstalk bound unwanted energy between named routes, so all three must be budgeted at the assembled matrix ports.

When should an electromechanical RF switch be used instead of a solid-state switch?

Electromechanical and solid-state switches occupy different loss, isolation, speed, power, size, control and lifetime boundaries; the route and switching sequence decide which is preferable.

What is the difference between a reflective and an absorptive RF switch?

A reflective switch leaves an unselected port mismatched, while an absorptive switch presents a defined termination over stated conditions; that choice affects stability, transients and off-port power.

Which hot-switch, cold-switch and settling-time details belong in an RF switch RFQ?

An RFQ must separate carry power from power during transition and define the command, blanking, contact or logic change, RF settling, recovery and readback sequence.

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Coaxial Switches

Coaxial switches provide controlled routing between RF ports that use coaxial interfaces such as SMA, N-Type, TNC or precision microwave connectors. They keep the signal path inside a defined impedance environment while the system changes test channels, antenna paths or instrument connections.

System role

These switches are used in automated RF test racks, receiver and transmitter routing, redundant antenna feeds, calibration paths and lab systems where each route must remain measurable and repeatable.

Key data

Useful records include port configuration, connector type, frequency range, insertion loss, isolation, return loss or VSWR, power handling, switching actuation, repeatability and mechanical life.