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Posted by merlinq 2 days ago

The quiet resurgence of RF engineering(atempleton.bearblog.dev)
208 points | 117 commentspage 2
teleforce 14 hours ago|
This is my recent comments on the new RF System-on-Module (SoM) assemblies [1].

If you want to venture or pivot into RF, especially from software background this is the golden time that's made possible/feasible by software-defined radio (SDR) technology as mentioned in the OP article.

One very important thing that the article did not mention is the emerging and increasing popularity of physical AI [2]. RF can be the crucial enabler to to further enhance human limited sensing capabilities with EM based waveforms. A simple analogy is how the dog's powerful smelling capabilities is helping/enhancing human detection capability.

Rather than just training and inferencing on image based I/O, the physical AI now can feed on the much richer RF, mmWave, THz and LIDAR raw waveforms. The good news is that the latter processing of mmWave, THz and LIDAR, can be greatly enhanced by the former lower RF baseband (modulated information signals) that's not previously possible/feasible.

[1] Comments on "ADSY1100-Series: RF System-on-Module Assemblies":

https://news.ycombinator.com/item?id=47821336

[2] What is physical AI?

https://www.ibm.com/think/topics/physical-ai

jacquesm 12 hours ago||
I've come full circle, and it is amazing how much has changed since I've last worked with anything in this field. Frequencies and a degree of precision and insight that you could have only dreamed of on a normal person's budget in the 80's are now easily attainable and combined with some knowledge of software there isn't a whole lot you can not do that you can think of, as long as it is physically possible and you have the time to spare to implement it. Still, it's hardware, and debugging is an order of magnitude harder than debugging software, so you have to prepare for that, as well as to make sure you get very close to being 100% right on your first try, respins in hardware are - unlike software - very expensive and can easily kill you. And in a way that's good, and it would be much better still if the software world was somehow forced to stop shipping halfbaked stuff.
willis936 48 minutes ago|
Slow is smooth. Smooth is fast. It pays off to have multiple experts really look at every part of a design and think through it before shipping. Don't treat anything as trivial.
protocolture 7 hours ago||
RF seems to have been doing fine? Like you specifically mention telco, and I have been watching a steady stream of rf telco products and improvements released over just the last 15 years? You sort of skip straight to 5G ignoring everything up until that point.

Even as a dot point mentioning the whole WiGig -> IgniteNet thing? Is that not interesting to you?

lifeisstillgood 12 hours ago||
>>> The underlying physics (electromagnetics, thermodynamics, materials science, manufacturing tolerances) don't reduce to algorithms. You have to build intuition for it, and that's not something you can shortcut.

Just wondering how an LLM replaces that job …

angry_octet 12 hours ago|
It's such a dark art I think they will be bad for a long time, until someone invests in a giant corpus of simulated designs and some better spatial understanding in LLMs.

A basic RF design LLM good enough for low end work will kill the development of human talent, leading to an eventual crunch in lack of advanced skills.

sneak 4 hours ago||
I’m not sure how the unit counts relate to the idea that vastly more EEs will be required. Sure there is some overhead in scaling manufacturing but I doubt it requires that many more EEs whether your satellite or automotive fleet is 10 units or 1000.
jacquesm 16 hours ago||
There is an author comment that is invisible if you don't have showdead on in the thread below.

https://news.ycombinator.com/item?id=47926755

_ache_ 7 hours ago||
RF is radio frequency and EE is Electronic Engineer ?
abeppu 16 hours ago||
> RF was nowhere on my radar.

cue rimshot

anovikov 7 hours ago||
It's also progress in components and compute that made insane things possible on a budget, that opened up new markets. Look at what this guy is doing https://hforsten.com/synthetic-aperture-radar-autofocus-and-...
drivebyhooting 13 hours ago|
But when will RF engineering pay 500k (common mid level SWE)?
mediaman 13 hours ago||
SWE are paid that because the industry makes so much money off advertising, and it marks the market for everything else.

It's more business model than skillset, because RF engineering is, in many ways, so much more technically challenging.

People who care about pay should mostly be thinking about how their potential employers make money. Do they have fat variable margins? Is there volume? Do I have the opportunity to impact those margins in some way? If you do, there's a good chance you can make good money, regardless of the actual technical challenge at hand.

For a lot of RF engineering, the answers are generally no, at least enough such that the general market isn't getting set at a high clearing rate.

Kirby64 12 hours ago|||
Hardware engineers can get paid that, although it’s rarer. That said, there’s also a much broader base of hardware engineers than just the Bay Area… so cost of living is a lot lower, therefore salaries don’t need to be as sky high to compensate.
sitzkrieg 13 hours ago|||
the difference is that RF engineers still have a salary 5 years later so that should probably be averaged in
drivebyhooting 12 hours ago||
?
georgeburdell 12 hours ago||
4 out of the 5 FAANGs hire RF engineers so… now?
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