Hi all,
thanks for the replies. Anyway just so that maybe we can stay on topic, as ACWWong pointed out, by chip-inductors I meant surface-mount. I checked up Murata and the highest Q I saw was around 150 at 1 GHz.
Quote:I would like to add selective substrate etching beneath the inductor technique to increase the Q but with reliability compromise.
does that fall under MEMs? What kind of Q is possible? How about cost-wise? It sounds very expensive.
Quote:Even off chip though, your network Q is going to be worse than the inductor due to board parasitics.
So for example, if I want to design a VCO with a tank inductance of 5 nH, what is the maximum tank Q I can get, and what kind of technology would I be looking at?
thanks,
Aaron