In order to minimize signal drop-out at the far reaches of a house, where the antenna must be in one corner of the house due to practical wiring reasons, I found the "SmartBeam" concept in D-Link Whole Home Router 1000 (DIR-645) an intriguing concept. However, I'm a bit skeptical since two years of subsequent models with better data rates in the same product line do not include that feature.
Does the multi-channel support in more recent routers or some other new technology provide the same kind of coverage benefits, but in a different way? Or is there still a unique benefit to the auto-focusing technology? Are other vendors using it?