电子科技大学学报2026，Vol.55Issue(1)：49-64,16.DOI:10.12178/1001-0548.2025249
宽带多频射频理论与技术
Broadband multi-frequency radio frequency theory and techniques
摘要
Abstract
The trend toward parallel multi-service operation in wireless mobile communication systems has led to increasingly fragmented spectrum resources and an exponential rise in the number of RF channels,making multi-band RF circuit techniques a critical challenge.This paper presents the research progress of our group in broadband multi-band theories and methodologies,alongside the developmental roadmap for corresponding RF devices.First,the theoretical framework for multi-band impedance matching is reviewed,summarizing matching techniques for three distinct scenarios:dual-band real impedance,constant complex impedance,and frequency-dependent complex impedance.Building upon this foundation,the design and implementation of multi-band passive components,including filters,power dividers,couplers,and antennas are introduced.Furthermore,the design of multi-band active amplifier circuits and their simplified linearization methods are discussed.Currently,dual-band circuit design and fabrication encompass a comprehensive range of active and passive circuits,featuring frequency separations exceeding two to three octaves and a cumulative dual-band bandwidth of up to 1.1 GHz.Significant progress has also been made in tri-band circuit design and realization,and a variety of representative tri-band active and passive circuits have been implemented.Finally,the paper discusses future development trends in multi-band RF technologies.关键词
宽带多频/射频电路/阻抗匹配/无源器件/有源器件Key words
broadband multi-frequency/radio frequency circuit/impedance matching/passive device/active device分类
信息技术与安全科学引用本文复制引用
陈锡炼,刘元安,周润华,于翠屏,苏明..宽带多频射频理论与技术[J].电子科技大学学报,2026,55(1):49-64,16.基金项目
国家自然科学基金重大项目(62090015) （62090015）
