新一代无线电平台数字射频核心技术研究与工程实践

无线电平台数字射频是提高现代无线电系统复杂电磁环境适应能力、机动能力、传输能力和综合集成能力等基础性能的关键.本文分析了射频技术的发展需求和国内外数字射频领域的研究进展,以及模拟射频核心单元——模拟射频功放主要指标相互矛盾的机理,并将数字射频概念扩展到综合数字射频,重点论述了数字射频核心技术——数字射频功放和全数字发信机的基本原理、优势和关键技术,提出了基于系统与工艺相结合的数字射频设计方法、数字射频功放的物理模型和一种全数字发信机体系结构以及我国自主可控发展数字射频的技术路线建议.本文认为在当今时代背景下,数字射频对于新一代无线电平台具有革命性和可行性;如果不能自主可控发展该项核心技术,我国又将出现一个新的受制于人的脆弱点.

Core technologies of digital radio frequency for advanced radio platform and their engineering practice

Digital radio frequency （DRF） of radio platforms is the key to enhancing the fundamental capabilitiesof radio systems, such as adaptive capability, maneuverability, transmission capability, and integration capability, in the complex electromagnetic environment. This paper first analyses the demands of RF technology develop- ment, introduces the research advance in this field both at home and abroad, and illuminates the principle of the contradiction among major indices of analog RF power amplifier （ARFPA）. Purther, it extends the DRF concept to integrated digital radio frequency （IDRF） with an emphasis on the principles and advantages of the core tech- nology of DRF-digital RF power amplifier （DRFPA） and all-digital transmitter （ADTx）. This paper proposes a DRF design based on combination of system design and techniques, presenting a physical model of DRFPA and an architecture of the ADTx, and gives suggestions for independent development of DRF technologies in China. DRF is revolutionary as well as feasible for advanced radio platforms. Developing its core technologies independently is crucial to China, otherwise China will suffer from an Achilles＇ heel.