  We report a 92 channel RF channelizer based on a 48.9 GHz integrated
micro-comb that operates via soliton crystals, together with a passive high-Q
ring resonator that acts as a periodic filter with an optical 3dB bandwidth of
121.4 MHz. We obtain an instant RF bandwidth of 8.08 GHz and 17.55 GHz achieved
through temperature tuning. These results represent a major advance to
achieving fully integrated photonic RF spectrum channelizers with reduced low
complexity, size, and high performance for digital-compatible signal detection
and broadband analog signal processing.
