[time-nuts] WWVB BPSK Receiver Project? (fwd)
marek at duch.cz
Sun Mar 18 18:36:13 UTC 2012
> My choice would be a center tapped, shielded, air core loop, running into
> a low noise instrumentation amp. Center tap of loop to twinax shield,
> grounded at preamp.
> The instrumentation amp has fixed gain, and very high CMRR and PSRR. It
> also does the differential to single ended conversion properly and has a
> low output impedance.
I have used an instrumentation amp in my breadboard, however, without
center tapping and shielding. But it seemed to me to be a very good
component for such low frequencies.
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