DocumentCode
1384136
Title
Compact capacitive compensated directional coupler using planar artificial transmission lines
Author
Liu, Cong ; Yang, Tao ; Huang, Kejie ; Menzel, Wolfgang
Author_Institution
Sch. of Electron. & Inf. Eng., Sichuan Univ., Chengdu, China
Volume
47
Issue
24
fYear
2011
Firstpage
1321
Lastpage
1323
Abstract
A novel compact directional coupler based on planar artificial transmission lines is proposed. Interdigital capacitors are introduced to compensate for the odd-mode phase velocity in order to achieve a high directivity. The size of this proposed coupler is about 25% that of a conventional one. A 20 dB directional coupler at 900 MHz has been designed and fabricated. The directivity reaches 36 dB at the centre frequency. The design, simulation and measurements are presented.
Keywords
capacitors; directional couplers; transmission lines; compact capacitive compensated directional coupler; frequency 900 MHz; interdigital capacitors; odd-mode phase velocity; planar artificial transmission lines;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2011.2803
Filename
6088043
Link To Document