Wideband Co-Designing Strategy for High Efficiency mmWave Rectennas Covering 10 – 40 GHz (Invited)

Amidst the ever-expanding wireless communication spectrum, millimeter-wave (mmWave) wireless power transmission (WPT) has garnered significant interest. In order to demonstrate the efficiency of mmWave WPT systems, we present two co-designed, high efficiency rectennas utilizing circular polarization (CP) and linear polarization (LP) magnetoelectric (ME) dipole designs. These rectennas resonate at 12 GHz and 24 GHz, showcasing impressive impedance bandwidths (S
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<−10 dB) of 11.15-15.53 GHz (32.8%) and 24-34.5 GHz (36%) respectively. The RF-DC conversion efficiency surpasses 50% for both designs, reaching peaks of 54.5% and 67% respectively. These rectennas excel in terms of efficiency, bandwidth, structural simplicity, and ease of fabrication. The proposed co-design strategy holds the potential for widespread application in the development of high efficiency rectennas spanning the 10 to 40 GHz range.