This focus issue of IEEE Microwave Magazine contains columns on topics being covered during IEEE Radio & Wireless Week 2021 (RWW 2021) and five overview feature articles dedicated to themes that represent the scope and purpose of the different subconferences within RWW. The five feature articles have been prepared by highly renowned authors in their research fields and address several timely technical topics, such as digital predistortion (DPD) in power amplifiers (PAs); integrated digital power amplifiers (DPAs) and transmitters; reflectionless filtering devices; emerging inkjet and 3D printing fabrication techniques for sensing, communication, and empowering tasks in modern Internet of Things (IoT) modules; and advanced receiver architectures with multiband, multifunction, and multimode operational capabilities.

中文翻译：

---

2021年无线电与无线周[来自客座编辑台]

本期《 IEEE微波》杂志的重点是专栏，介绍了2021年IEEE无线电和无线周（RWW 2021）涵盖的主题，以及五篇概述专题文章，专门介绍了RWW中不同子会议的范围和目的的主题。这五篇专题文章是由知名作者在其研究领域中编写的，涉及了一些及时的技术主题，例如功率放大器（PA）中的数字预失真（DPD）；集成数字功率放大器（DPA）和发射机；无反射滤波装置；用于感测，通信和授权现代物联网（IoT）模块中任务的新兴喷墨和3D打印制造技术；以及具有多频段，多功能和多模式操作功能的高级接收机架构。