A Compact Diplexer Composed of Quarter-wavelength Resonators for Ultra-wideband (UWB) System
A compact diplexer composed of quarter-wavelength resonators for ultra-wideband (UWB) system is proposed and implemented in this paper. The microstrip diplexer is mainly composed of two bandpass filters, which operates at 3.1-5.0 GHz (namely L-BPF) and 6.2-10.1 GHz (namely H-BPF), respectively. Each filter is composed of three shorted-circuit quarter-wavelength resonators. After optimizing the performance, the highest return loss of each filter in the desired passband is-14 dB and-16.8dB, respectively. For both filters, the insertion loss is below 1dB and the wide stopband rejection is greater than 20 dB. The isolation between two channels is more than 25 dB. The design concept is proposed in detail and has been verified by the experimental results of a fabricated diplexer. The size is compact with overall dimensions of 19.5 × 19 × 0.8mm3.
Kai Wang Zai-Cheng Guo Yu-Fa Zheng Jing-Yu Lin Sai Wai Wong Qing-Xin Chu
School of Electronic and Information Engineering, South China University of Technology Guangzhou, Gu School of Information Science and Technology, Southwest Jiaotong University Chengdu, Sichuan 611756,
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
1323-1326
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）