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该论文提出了一种宽带毫米波VSWR鲁棒的真功率检测器和阻抗传感器，支持单端天线接口，解决了天线阻抗变化对功率放大器性能的影响问题。通过联合检测真功率和阻抗，实现了在K/Ka波段（24-40GHz）的稳定工作。
ETH Zurich, Zurich, Switzerland 1 2 Mm-wave 5G communication seeks to support multi-Gb/s data-rates over its large available spectrum, particularly in the K/Ka bands (24 to 40GHz). To ensure sufficient link budget under mm-wave path losses, array-based systems are required. However, element coupling in practical antenna arrays varies each antenna load from its ideal 50Ω impedance (i.e., VSWR = 1). Power amplifiers (PAs) govern the overall transmitter (Tx) performance yet are the most susceptible blocks to VSWR variation, as they interface directly with antennas. The antenna VSWR alters the PA load, degrading the PA linearity, efficiency, output power, and reliability. Multiple proposed reconfigurable PAs maintain the PA performance under VSWR but require VSWR resilient built-in-self-test (BiST), particularly on-chip power and impedance sensors, to determine the PA operation/reconfiguration. Previous work on power detectors is primarily based on
David J. Munzer1, Naga Sasikanth Mannem1, Edgar Garay1, Hua Wang1,2
Georgia Institute of Technology, Atlanta, GA