⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出了一种用于28GHz相控阵的超紧凑Doherty功率放大器，采用非对称耦合变压器输出合成器实现小型化。解决了毫米波相控阵前端RF构建块集成度低、成本高的问题。
Georgia Institute of Technology, Atlanta, GA 1 2 Mm-wave wireless communication and sensing heavily rely on phased arrays to compensate for high path losses and meet link-budget targets. Recent mm-wave arrays have grown increasingly complex, often with many parallel RF paths integrated on a single front-end/beamformer chip [1]. Dual-polarization and multiband operation further multiply the number of RF front-end paths. Consequently, one technology trend of array front-end chips is to aggressively miniaturize RF building blocks for integration and cost saving, while simultaneously achieving higher energy efficiency to maintain the thermal density and ease the packaging. Power amplifiers (PAs) often take a large share of the chip area and power consumption and are, therefore, at the center stage of this mm-wave front-end miniaturization. Furthermore, the multi-Gb/s data-rates promised by 5G require spectrally efficient
Edward Liu1,2, Hua Wang1
ETH Zurich, Zurich, Switzerland