A Simple Adaptive Beamformer for Ultrawideband Wireless Systems

This paper introduces a simple beamformer for ultrawideband (UWB) wireless networks. The architecture consists of a two-element antenna array, a phase shifter and a signal combiner. The performance of the proposed beamformer is analyzed in terms of radiation pattern characteristics over the FCC´s defined operating band for UWB communications devices. It is shown that this simple architecture can provide useful interference rejection and range extension capabilities for high data-rate UWB wireless networks. In particular, it is shown that the radiation pattern characteristics of the proposed sub-optimal beamformer remain beneficial over the allocated UWB band, even given its low complexity and implementation cost