[time-nuts] high rev isolation amps

John Miles john at miles.io
Sat Mar 26 20:20:17 EDT 2016


> 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.

Lots of options at http://www.spectradynamics.com, also see the LNDA series at http://www.wenzel.com.  

-- john, KE5FX
Miles Design LLC



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