"John Smith" wrote in message link.net...
"Alan Horowitz" wrote in message
om...

Is there a place in modern technique for regeneration (Q-multiplication)?


I think its possible it might become popular technology again. The
advantage of high gain per cost is attractive, and it has other
benefits. Stability is the prime issue: it can be controlled by low
frequency quenching, which can of course be adaptive. The question now
is whether a simple scheme can be devised that ensures consistent
stability and gain with small quench control circuit cost. If solid
stability is achieved, the rf emission problem is eliminated at the
same time. If its achieved at minimal cost, it may be a winner.

I know I've seen it used in some modern receiver chips, but damned if
I can remember the details.


NT