Yes, like fighter radars. The US, for example has a TPS-77 radar with GaN since 2018 or so, israeli ELTA has some similar GaN radar. Those are both mobile tactical air surveillance radars for the air defense network. Yet, in these years since then, no one came out with even mentioning that they're working on a GaN based fighter radar. Could it be it still requires a lot of additonal effort, on top of getting GaN to work on larger arrays? Maybe the cooling requirements are still not solved for the crowded space in fighter noses?
Chinese Radar Developments - KLJ series and others
The new AESA radars developed by CETC seem to use GAN, and even the old radar SLC-2 exported has been replaced with a transmitting antenna that uses GANs. This radar seems to be used in Pakistan?
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