Comparison of the radar of J-20A and F-35A, here we don't compare the size of the radar or the number of T/R components, but compare its anti-jamming capability.
Semiconductors with a wider bandgap can emit more frequency bands, which is beneficial for frequency hopping when interfered. Of course, the interference is estimated to be from semiconductors of the same generation or above, because semiconductors with too narrow a bandgap cannot handle many frequency bands.
There is also a type of electromagnetic interference called co-channel interference, which refers to blocking interference implemented on a specific electromagnetic frequency band, causing the airborne radar's information processing to overload and crash. Semiconductors with a wider bandgap have higher sensitivity; they can more accurately find electromagnetic signals that match the characteristics when receiving returning electromagnetic waves. In other words, as long as the opponent does not know its coding mechanism, it is impossible to interfere.
The new digital array radar (Digital Array Radar, DAR) is based on this, integrating array antenna technology, array signal processing technology, and modern digital technology, and is also known as a fully digitized phased array radar.
Original article: https://www.toutiao.com/article/1837778724498441/
Statement: This article represents the views of the author himself.