On 3/26/16 2:30 PM, Rob Sherwood. wrote:
You cannot add the directivity and gain. Doesn't work that way. Rob, NC0B.
Yeah, I kind of figured that after getting the S parameters from
minicircuits.
Sent from my iPad
On Mar 26, 2016, at 2:00 PM, "jimlux" <[email protected]> wrote:
Consulting the time-nuts hive mind here..
I'm looking for off the shelf connectorized amplifiers with very good reverse
isolation for doing things like intermod measurements (e.g. 2 signal generators
followed by amps/pads into a combiner) and phase noise measurements for a
digital receiver.
1-100 MHz kind of frequency range..
I've used ZFL-500LN (30dB gain, 27 dB directivity in the data sheet, which I
interpret as 57dB reverse) , ZX60-4016 (really more of a microwave amp, and not
so hot reverse wise.. 25 dB)
I'm not particularly cost constrained, so a higher power amp (which also
reduces distortion products from the amp) followed by pads is always an
alternative.
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