Title :
Compact dual-band ISCRLH TL based hybrid couplers with arbitrary power division ratios
Author :
Gong, Jian-Qiang ; Jiang, Jun-Bo ; Liang, Chang-Hong ; Wu, Bian
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xian, China
Abstract :
In this paper, the design methodology for constructing novel dual-band hybrid couplers with arbitrary power division ratios is presented. The improved simplified composite right-/left-handed (ISCRLH) transmission line (TL) stub is adopted to imitate the conventional 90° section at the two specified frequencies with different characteristic impedances. An ISCRLH TL stub comprises two ISCRLH TL unit cells with input and output uniform TL sections at the two-port terminals, which possesses a degree of freedom in design parameters to assure the size miniaturization and the element realizability. Hybrid couplers operative at 2.45/5.2 GHz with various power division ratios are designed, verifying the proposed design methodology.
Keywords :
UHF couplers; transmission lines; ISCRLH TL unit cells; arbitrary power division ratios; characteristic impedances; compact dual-band ISCRLH TL based hybrid couplers; composite right-left-handed transmission line stub; degree of freedom; frequency 2.45 GHz; frequency 5.2 GHz; size miniaturization; two-port terminals; Bandwidth; Couplers; Dual band; Hybrid power systems; Impedance; Microwave circuits;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230335
