Design of broadband RF transceiver front-end using highly selective diplexer and high Q-factor hybrid resonator bandpass filters

Abstract

In this paper, a development of low cost, miniature, highly integration broadband RF transceiver front-end using the high selectivity hybrid resonator RF bandpass filters, and diplexer integrated with shielding case is presented. The proposed RF transceiver frontend operates at the 2.7 GHz for transmitting and 2.4 GHz for receiving, supporting a channel bandwidth of 100 MHz with frequency division duplexing mode. The designed low loss, high selectivity hybrid resonator bandpass filters are utilized to channel selection and reject the interference signal. The high isolation diplexer is employed to separate the Tx and Rx signals and reject the interferences from other systems to the RF receiver as well as filter out the harmonics generated by the RF transmitter. The measured performance of the proposed RF transceiver front-end module is superior to the requirements as well as can support high spectrum efficiency and high data rate communications with low error vector magnitude.

KEYWORDS:

• Transceiver
• diplexer
• bandpass filter
• low error vector magnitude
• hybrid resonator

Acknowledgement

The authors also thank Keysight Technologies and Rohde & Schwarz for providing the test instruments of the experimental.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Notes on contributors

Le-Cuong Nguyen

Le-Cuong Nguyen received his Bachelor degree in Electronics and Telecommunications at Hanoi University of Science and Technology in 1999 and Master degree in Telecommunications at Le Quy Don Technical University in 2006. In 2012, he received Ph.D. degree in Electronics Engineering at Post and Telecommunications Institute of Technology (PTIT). He joined Vietnam telephone equipment company (VITECO) as Research Engineer in 1999. Now, he is a lecturer in Electric Power University, Vietnam as Head of Faculty of Electronics and Telecommunications. Since June 2019, he has been appointed as the Vice Principal of Electric Power University, Vietnam. Dr Nguyen has published many national as well as international papers. His research interests are communication security, watermarking and digital signal processing.

Trong-Hieu Le

Trong-Hieu Le was born in Hanoi, Vietnam in 1986. He graduated at Le Quy Don Technical University in Electronics and Telecommunications, in June 2009. He received the M.S. and Ph.D. degrees in 2013, and 2018, respectively, all in Electromagnetic Field and Microwave Technology from the State Key Laboratory of Millimetre Waves, School of Information Science and Engineering, Southeast University, Nanjing, China. Dr Le is currently a lecturer in the Faculty of Electronics and Telecommunications, Electric Power University, Hanoi, Vietnam. His fields of research are RF/Microwave circuits and mm-Wave technologies such as filters, power amplifiers, VCOs for wireless communication applications.

Manh-Cuong Ho

Manh-Cuong Ho received Bachelor degree in Radio Physics and Electronic at VNU University of Science in 1999 and Master degree in Electronic Engineering at Le Quy Don Technical University in 2006. In 2019, he received Ph.D. degree in Electronics Engineering at Le Quy Don Technical University. He joined Electronics Company, Vietnam as Research Engineer in 2000. Now, he is a lecturer in Electric Power University, Vietnam. His area of expertise are microwave engineering, antenna, chaos-based digital communications as well as wireless communication and localization systems.

Xiao-Wei Zhu

Xiao-Wei Zhu received the M.E. and Ph.D. degrees in radio engineering from Southeast University, Nanjing, China, in 1996 and 2000, respectively. Since 1984, he has been with Southeast University, where he is currently a Professor with the School of Information Science and Engineering. He has authored or co-authored more than 90 technical publications. He holds 16 patents. His current research interests include RF and antenna technologies for wireless communications, microwave and millimeter-wave theory and technology, and also power amplifier (PA) nonlinear character and its linearization research with a particular emphasis on wideband and high-efficiency GaN PAs. Dr Zhu was a recipient of the 1994 First-Class Science and Technology Progress Prize presented by the Ministry of Education of China and the 2003 Second-Class Science and Technology Progress Prize of Jiangsu Province, China. He is the President of the Microwave Integrated Circuits and Mobile Communication Sub-Society and the Microwave Society of CIE. He is the Secretary of the IEEE MTT-S/AP-S/EMC-S Joint Nanjing Chapter.