There isnt much can be done on Rafale's radar tho as French are more concerned with carrier landing visibility than to attain large power aperture products. They seems already happy with 60 cm aperture.
One way to gain more is to increase TRM ratings which apparently they did for middle eastern customer (UAE) or further attempt to reduce receiver noise figure, but kinda doubt this will be productive as current figures of some 2-3 dB is already great. any lower might require, say even cooler receiver like one did for radiotelescope, but this seems impractical for fighter radar.
One way to gain more is to increase TRM ratings which apparently they did for middle eastern customer (UAE) or further attempt to reduce receiver noise figure, but kinda doubt this will be productive as current figures of some 2-3 dB is already great. any lower might require, say even cooler receiver like one did for radiotelescope, but this seems impractical for fighter radar.