Switch Introduction Wide-band test instrumentation often needs signal routing. This is accomplished with mechanical switches, which are expensive and slow. When isolation requirements are not high, it is also done with electronic switches.
Some high isolation switches available in the market are very expensive.
Two versions, absorptive and reflective have been introduced. This paper will describe these DC-5 GHz high isolation switches and a typical application. Performance Signal routing and automated testing are two major applications of switches. Mechanical switches have high isolation and low-insertion loss. However, they have very long switching time and limited life.