Re: Yttrium iron garnet

On Wed, 29 May 2024 17:12:21 -0000 (UTC), Cursitor Doom
<cd999666@notformail.com> wrote:

On Wed, 29 May 2024 13:52:34 +1000, Bill Sloman wrote:
>

Yttrium iron garnet tuned oscillators were around back then, but their
2GHz to 8GHz range was too high for me to count with the integrated
circuits around then - we had to go the Gigabit Logic's GaAs parts to
get to 800MHz, and that became the unique selling point of the system.

>
YIG oscillators were quite the thing back in the day, but I'm guessing
they've been completely superseded by now to get to ever higher
frequencies. Seems we've gone from -
>
R/C to L/C to Xtal to YIG since about 1900. Did I miss any development(s)
out pre-YIG?

Tuning forks, SAWs, BAWs,  mechanical ceramic resonators, dielectric
ceramic resonators, coaxial ceramic resonators, sapphire, cavities,
atomic things.