Signal Routing System Differences
There are many ways for a signal to get from Point A to Point B. The topology selection has a direct bearing on the functionality the switch matrix can provide in a customer’s application. See the Appendix section of this site for more information.
Understanding The Other Key Performance Needs
Other key factors in the selection of the switching system must also include balancing dynamic range and isolation. Typically, Front-End Routers require the highest inter-modulation performance, with mid-level isolation (50-70 dB). Intermediate Frequency (IF) Routers require mid-level inter-modulation performance, with higher signal isolation (60-90 dB).
In concept the signal flow is quite simple; just route the signal from Point A to Point B. This is where the simplicity ends. In order for the signal to arrive at Point B with the highest fidelity, it must pass through amplification and switching circuits that introduce minimum distortion. The primary goal is high dynamic range: the lowest noise figure, and the highest inter-modulation intercept points.