Utilizing digital beamforming techniques in conjunction with the feed array of large deployable reflector antennas can boost the performance of synthetic aperture radar (SAR) systems. Multi-channel SAR overcomes the constraints of classical singlechannel SAR allowing for wide-swath imaging at fine azimuth resolution. Part 1 of this tutorial provided an introduction to the instrument structure of a digital beamforming (DBF) imaging radar and the particularities/variants of its basic operation mode, known as a single-beam scan-on-receive (SCORE) system.The underlying part 2 of the tutorial paper addresses the topic of ultra-wide swath imaging in the order of a few hundred kilometers, enabled through DBF. A detailed insight into simultaneous multiple sub-swath imaging is given; gaps (blind ranges) that occur in this operation mode are addressed; and the data streams management at the various on-board processing stages is explained, put in relation to the imaging mode, and expressions for the data rates are provided.A further beamforming topic seized in part 2 of this tutorial trilogy is the feed array excitation (complex weights) and the resulting primary and secondary radiation patterns. This is explained in the context of a reference reflector-feed antenna system providing numerous example cases aiming to foster the understanding of the topic.Index Terms-synthetic aperture radar (SAR), digital-beam forming, reflector-based SAR.Parameter Values: For a f prf = 1770 Hz and T echo = 1.52 ms the number of beams can be computed using (1) which results in N beam = 3. The diamond diagram in Fig. 1 shows that three sub-swaths are required to image a 355 km swath (look angle range from 26.4 • to 42.5 • ). The typical number of beams for reflector SAR is in the range of N beam = 3 to 6.