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Frequency Independent Millimeter-Wave Beamformer via Cross-Mixing

The need for high data rate communications has led to the exploration of the millimeter-wave (mm-wave) spectrum. But, significant losses at these frequencies imply high gain phased array antennas. Concurrently, low cost fabrication and beamforming across wide bandwidths is a foundational challenge. In this paper, we present a novel hybrid beamforming design using the concept of element-to-element mixing for the signal delay compensation. Notably, our novel architecture eliminates bulky phase shifters and local oscillators. Further, our system is combined with a baseband on-site coding technique for further hardware and cost reduction. Studies show that our design offers unparalleled flexibility in signal reception and promises 95% reduction in cost and power consumption.