[an error occurred while processing this directive]

ZTE Communications ›› 2011, Vol. 9 ›› Issue (2): 1-1.

• • 上一篇    下一篇

Guest Editorial: Microwave/RF Technologies for Future Wireless Communications

Ke-Li Wu1 and Keqiang Zhu2   

  1. 1. The Chinese University of Hong Kong (CUHK)
    2. ZTE Corporation
  • 出版日期:2011-06-25 发布日期:2011-06-25
  • 作者简介:Ke-Li Wu is a professor of Electronic Engineering at The Chinese University of Hong Kong (CUHK). Prior to his career in CUHK he was a principal member of technical staff in the Corporate R&D division at Com Dev International. Professor Wu is a fellow of IEEE, a member of IEEE MTT-8 committee, and was an associate editor of IEEE Transactions on MTT. He has authored or coauthored more than 60 leading journal papers on EM modeling, microwave passive circuits, and antennas. His current research interests include numerical and analytical methods in electromagnetics, passive microwave circuits, microwave filters, small antennas for wireless terminals, LTCC-based multichip modules, and RF identification (RFID) technologies.

    Keqiang Zhu received his B.E degree in Electronic Engineering at Hefei University of Technology in 1994. He is chief architect of RRU with ZTE Corporation. His research interests include wireless base station architecture and advanced RF technologies in wireless telecommunication industry. He has two patents in US and one patent in China.

Guest Editorial: Microwave/RF Technologies for Future Wireless Communications

Ke-Li Wu1 and Keqiang Zhu2   

  1. 1. The Chinese University of Hong Kong (CUHK)
    2. ZTE Corporation
  • Online:2011-06-25 Published:2011-06-25
  • About author:Ke-Li Wu is a professor of Electronic Engineering at The Chinese University of Hong Kong (CUHK). Prior to his career in CUHK he was a principal member of technical staff in the Corporate R&D division at Com Dev International. Professor Wu is a fellow of IEEE, a member of IEEE MTT-8 committee, and was an associate editor of IEEE Transactions on MTT. He has authored or coauthored more than 60 leading journal papers on EM modeling, microwave passive circuits, and antennas. His current research interests include numerical and analytical methods in electromagnetics, passive microwave circuits, microwave filters, small antennas for wireless terminals, LTCC-based multichip modules, and RF identification (RFID) technologies.

    Keqiang Zhu received his B.E degree in Electronic Engineering at Hefei University of Technology in 1994. He is chief architect of RRU with ZTE Corporation. His research interests include wireless base station architecture and advanced RF technologies in wireless telecommunication industry. He has two patents in US and one patent in China.

PDF

摘要： Compared with 2G, the most prominent features of 3G and future wireless communication systems are a higher transmission rate and support for multimedia services. A higher transmission rate means that signal bandwidth is large, use of frequency spectrum is more efficient, and radio frequency equipment is greener. Demand for richer multimedia services is creating greater challenges for system developers and has led not only to the publication of tens of thousands of documents but also to tremendous new technology developments in the Long-Term Evolution (LTE) of 3GPP’s Universal Mobile Telephone System (UMTS).

International deployment of UMTS is progressing steadily, and more than 180 mobile network operators throughout Europe, North America, and Asia are providing 3G services. High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) in UMTS can improve the transmission data rate and spectrum efficiency. This reduces transmission cost per bit. The trend towards increased data traffic and high-capacity content requires that base station equipment use new and existing frequency bands flexibly. This trend also requires that base stations have simplified but flexible network architecture with open interfaces and to consume less power. These requirements must be achieved by developing more efficient power amplifiers and broadband antennas as well as more compact high performance RF filters with less insertion loss.

In this special issue on microwave/RF technologies for future wireless communications, we invited five experts to contribute articles. Each of these articles shows a different aspect of the challenges and advanced technologies involved in microwave/RF for future wireless communications—from system architecture requirements, technologies in broadband power amplifiers, advanced RF dielectric resonator filters, and broadband antenna technologies to the state-of-the-art synthesis theory of sophisticated microwave/RF filters. We understand that these topics are far from enough to provide a complete picture of the industry, and some of the topics in this special issue are, indeed, classic. Nevertheless, we have obtained contributions from five experts, including the most experienced system architects in the industry, a senior RF engineer in power amplifiers, an industry leader who has been working on dielectric filters for more than two decades, a top tier scholar in broadband base station antennas, and the most eminent researcher in the microwave filter industry. Such combined efforts have made this issue very special.

We are very grateful to all the authors, reviewers, and the editorial board who have spent their valuable time on this special issue. We hope you will find the articles useful to your professional work and enjoyable to read.

关键词: Microwave, RF, Future Wireless Communications

Abstract: Compared with 2G, the most prominent features of 3G and future wireless communication systems are a higher transmission rate and support for multimedia services. A higher transmission rate means that signal bandwidth is large, use of frequency spectrum is more efficient, and radio frequency equipment is greener. Demand for richer multimedia services is creating greater challenges for system developers and has led not only to the publication of tens of thousands of documents but also to tremendous new technology developments in the Long-Term Evolution (LTE) of 3GPP’s Universal Mobile Telephone System (UMTS).

International deployment of UMTS is progressing steadily, and more than 180 mobile network operators throughout Europe, North America, and Asia are providing 3G services. High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA) in UMTS can improve the transmission data rate and spectrum efficiency. This reduces transmission cost per bit. The trend towards increased data traffic and high-capacity content requires that base station equipment use new and existing frequency bands flexibly. This trend also requires that base stations have simplified but flexible network architecture with open interfaces and to consume less power. These requirements must be achieved by developing more efficient power amplifiers and broadband antennas as well as more compact high performance RF filters with less insertion loss.

In this special issue on microwave/RF technologies for future wireless communications, we invited five experts to contribute articles. Each of these articles shows a different aspect of the challenges and advanced technologies involved in microwave/RF for future wireless communications—from system architecture requirements, technologies in broadband power amplifiers, advanced RF dielectric resonator filters, and broadband antenna technologies to the state-of-the-art synthesis theory of sophisticated microwave/RF filters. We understand that these topics are far from enough to provide a complete picture of the industry, and some of the topics in this special issue are, indeed, classic. Nevertheless, we have obtained contributions from five experts, including the most experienced system architects in the industry, a senior RF engineer in power amplifiers, an industry leader who has been working on dielectric filters for more than two decades, a top tier scholar in broadband base station antennas, and the most eminent researcher in the microwave filter industry. Such combined efforts have made this issue very special.

We are very grateful to all the authors, reviewers, and the editorial board who have spent their valuable time on this special issue. We hope you will find the articles useful to your professional work and enjoyable to read.

Key words: Microwave, RF, Future Wireless Communications