I'm sorry, Tom, could you explain something....
> I am looking at a design for receiver protection in an
SO2R environment
...
A bulb is a good choice Pete, generally better than any fuse
.....
> If I stack 3 diodes in each direction, the forward
......
I just was measuring something like that today with a 50 ohm
source and load and two tones near 5 MHz.
1N916's TOI -12dB and started to show IM at 0dBm each tone
(about 1/4 volt !)
1N4005 TOI -14.6dB and started to show IM at -3dBm
UF4004 TOI -15dB and started to show IM at -3.5dBm
1N5408 TOI -18.8dB and started to show IM at -5dBm
Stacking the diode pairs increased things about 6dB, as
expected.
..........................................
I don't see what you mean. In the first line, is the TOI (IP3?) -12
dBm? If so, how can IM start to show up with the input -3? That's above
the intercept point?
Sorry if this is a bit dense. It's not the way we talk about IP3 at work.
Bob
W4ATM
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