GaN-on-SiC
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Joined 3 months ago
Your certificates should never be signed by the root - this is prohibited by the CA/B Forum (see Baseline Reqs 6.1.7). My understanding of best practices is that the root signs intermediates then is taken offline ASAP, and the intermediates sign leaf certificates.
Re: Starfield, GoDaddy (and AWS) use the name in trade but operate the issuance. The dev-sec-policy mailing lists should detail any transfers of ownership (in which cases, it is common to maintain an old brand name under a new root).
Two big uses are antenna design and RF circuit design.
I can't comment on this specific solver but it does mention using EMerge, an existing FOSS project, as its core. Another FOSS alternative is openEMS. Anyone doing this for a job will just pay for CST/Sonnet/HFSS/Axiem/EMPro etc.