RRU关键技术及创新

[摘要] 认为远端射频模块（RRU）包含收发信机（TRX）、功放、射频（RF）算法、滤波器、天线五大专有关键技术方向。其中TRX主要聚焦高集成、低功耗、大带宽技术；功放及算法主要聚焦高效率低成本技术；滤波器主要聚焦小型化、轻量化技术；天线主要聚焦于天面简化、5G低频大规模多输入多输出（MIMO）、5G高频技术。同时详细说明了近十年来这些技术的发展趋势及创新。

[关键词] RRU；TRX；功放（PA）；RF算法；滤波器；天线

[Abstract] Radio remote unit (RRU) has 5 key technologies: transmission receiver unit (TRX), power amplifier, radio frequency (RF) algorithm, filter, and antenna. TRX mainly focuses on high integration, low power and wide band; power amplifier and RF algorithm mainly focus on high efficiency and low cost; filter mainly focuses on miniaturization and lightweight; antenna mainly focuses on simplification, 5G low frequency massive multi-input multi-output (MIMO), and 5G high frequency. At the same time, the development trend and innovation of these technologies during the past ten years are explained in detail.

[Keywords] RRU; TRX; power amplifier (PA); RF algorithm; filter; antenna