Title :
A Simple and Effective Method for Designing Frequency Adjustable Balun Diplexer With High Common-Mode Suppression
Author :
Chia-Mao Chen ; Shoou-Jinn Chang ; Cheng-Fu Yang ; Cheng-Yi Chen
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
A simple and effective structure based on traditional coupled-line theory and the configuration of folded open-loop ring resonators (OLRRs) was used to design a balanced-to- unbalanced (balun) diplexer. The two resonant frequencies of the balun diplexer are easily adjusted by changing the physical dimensions of OLRRs and microstrip lines and they had high common-mode suppression. In this study, the designed balun diplexer is investigated for LTE (2.6 GHz) and WLAN (5.2 GHz) band applications.
Keywords :
UHF resonators; baluns; coupled transmission lines; microstrip lines; microwave resonators; multiplexing equipment; LTE; OLRRs; WLAN; balanced-to-unbalanced diplexer design; coupled-line theory; folded open-loop ring resonator configuration; frequency 2.6 GHz; frequency 5.2 GHz; frequency adjustable balun diplexer design; high common-mode suppression; microstrip lines; resonant frequency; Bandwidth; Impedance matching; Insertion loss; Microstrip; Ports (Computers); Resonant frequency; Wireless communication; Balun diplexer; common-mode; microstrip line; open-loop ring resonator (OLRR);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2015.2427583
