I also designed a 10 MHz LC resonator version with the aim to run the resonator at fairly high power. I've a fair bit of experience designing discrete low noise gain blocks so I replaced the noisy MMIC with a discrete BJT design and the first attempt is as below.
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I think I can improve on this by several dB by reconfiguring the output network of the gain block (to allow higher power) and also I think I can improve on the resonator if I order some better parts for the resonator. It currently manages -165dBc/Hz at 10 kHz offset but I think the next version will be better than this.
There's a lot of spurious signals below about 500 Hz and this is due to pickup in my workroom from nearby equipment. I'll try and do something about this. I don't think it is getting in via the DC power feed.
The noise floor is very lumpy once it gets below -180dBc/Hz on the E5052A and again, I'm probably exploring the limits of the E5052A again here.
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This is an LC oscillator not a crystal oscillator so the close in phase noise is relatively poor.
I'm not that interested in achieving low phase noise below about a 1kHz offset but I can probably experiment with the gain block to minimise flicker noise.
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