Fairview Microwave Blog
The Basics of RF Switches
A RF switch is a basic building block of many RF circuits used in communication, sensing, and test & measurement applications. RF switches are used whenever a signal path needs to be optionally opened/closed, or when specific signal paths need to be selected. An example of this is in a radar RF Front End (RFEE) when the path to the antenna needs to be switched between the transmitter during...
What is a RF Coaxial Hybrid Coupler?
A RF Coaxial Hybrid Coupler is a type of RF coupler that essentially behaves as an equal power splitter while also creating a phase shift between the two ports. RF hybrid couplers are generally distinguished by the degree of the phase shift, be it 0 (no phase shift and just a 4-port directional coupler), 90, or 180. A unique attribute about RF hybrid couplers is that the phase shift between the...