What are the technical challenges with multi-gigabit wireless communication links?
When trying to cover large bandwidth, it is tough to achieve power linearity and efficiency simultaneously. You also have to do it at a modest cost and small size. Of course, the system architectures are more complicated. With CMOS having such a large role in baseband and transceivers, we see it being implemented there without a huge burden. What trends do you see? Interestingly, I reread the IMS technology program from 2000; that year, power-amplifier linearization was a big topic. This year, there is a lot of excellent work being done in amplification technologies. GaN is looking like a very much “here and now” technology. Papers in the past have explained how to optimize the GaN process, but now the papers are product-oriented. The technology is ready to go. It is interesting to note that, for the first time at IMS, there is a panel on work/life balance for microwave engineers. What inspired that topic? That comes out of a group within the MTT Society (IEEE Microwave Theory and Tech
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