Figure 2 shows that the WNR834B's enclosure is identical to that of its WNR854T sibling, which uses Marvell's TopDog chipset.
Figure 2: Netgear WNR854T RangeMax Next Wireless Router
Figure 3: Netgear WNR834B board bottom view
Figure 4 shows that a CardBus radio is used, which is the same approach taken by Linksys. But the WNR834B uses only two internal antennas instead of the three external antennas used by the Linksys WRT-300N.