Boy thats nice and simple. Shame I juts placed a order for parts could have added a few 10.7 xformers to the order.
On Wed, Dec 14, 2011 at 9:55 AM, Timeok <tim...@timeok.it> wrote: > see also: > http://www.timeok.it/files/10_mhz_bandpass_filter.pdf > -- > Luciano P. S. Paramithiotti > IZ5JHJ > > > --------- Original Message -------- > From: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > Subject: Re: [time-nuts] filtering a 10Mhz frequency standard? > Date: Dec 13, 2011 10:29 PM > > > If you are going to buffer the output, why does the filter have to be > > passive? Did I miss something here? Today 10MHz is in the realm of > > active filters. [Hey, not that I made an active filter at 10MHz.] > > > > Sensitivity is a function of the denominator. The only advantage to a > > LPF over a BPF is the BPF has to be centered at 10MHz, while you could > > bump the corner of the LPF to a higher frequency so there is less > > sensitivity at 10MHz This presumes you are only getting rid of harmonics > > and not spurs. > > > > For lowest component sensitivity, leap frog designs are best. But in > > continuous time designs, they require many op amps per pole. > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > Sent to you using Uebimiau Webmail version 3.11 > Developed by Dave and Todd at http://www.manvel.net and http://www.tdah.us > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.