I'm building a board with some relays to switch a bank of HF filters. I want to be sure I'm understanding the isolation I can expect from a given relay so as to not degrade a filter's performance by allowing unselected relays to couple into the output.
Let's say I have this circuit, built of relays with a specified isolation: [full datasheet]
Does the fact that the unselected input sees a short to ground change the isolation I can expect to something more than the 37dB in the datasheet, since the unselected input will be able to deliver very little power into the short? Or does it not matter since there can still be current through the short which can couple the signal inductively across the relay?