The present disclosure includes systems and techniques relating to wireless local area network devices. A described technique includes configuring separate radio pathways, which are operable for either contiguous or non-contiguous frequency transmissions, to collectively produce a composite signal in a contiguous frequency mode; generating, via first and second radio pathways, first and second frequency segments of the composite signal in accordance with a segment bandwidth, the second frequency segment being contiguous with the first frequency segment in a frequency domain; applying, via the first and second radio pathways, first and second cyclic shift delay (CSD) phase shifts to the first and second frequency segments to produce first and second output signals, respectively. The first and second CSD phase shifts are equivalent to CSD phase shifts that correspond to a contiguous non-composite signal having a single frequency segment.