Title :
A compact enhanced-bandwidth hybrid ring using a left-handed transmission line section
Author :
Okabe, H. ; Caloz, C. ; Itoh, T.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
A novel compact enhanced-bandwidth hybrid ring using a left-banded (LH) transmission line (TL) is proposed. The LH-TL is used in replacement of the 270/spl deg/ TL of the conventional hybrid ring. The proposed hybrid shows a 54% bandwidth enhancement and 67% size reduction compared to the conventional hybrid at 2 GHz. The working principle is explained and the performances of the components are demonstrated by measurement results.
Keywords :
UHF circuits; power dividers; transmission line theory; 2 GHz; LH-TL bandwidth enhancement/size reduction; compact enhanced-bandwidth hybrid rings; isolated output port out-of-phase/in-phase power dividers; left-handed transmission line sections; rat-race hybrids; Bandwidth; Equivalent circuits; Integrated optics; Laboratories; Microwave circuits; Optical materials; Performance evaluation; Plasma applications; Transmission line theory; Transmission lines;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210945
