DocumentCode :
82241
Title :
A Miniaturized 3 dB 90 
Hybrid Coupler Using Coupled-Line Section With Spurious Rejection
Author :
Jikwon Kim ; Jong-Gwan Yook
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Volume :
24
Issue :
11
fYear :
2014
fDate :
Nov. 2014
Firstpage :
766
Lastpage :
768
Abstract :
In this letter, a novel miniaturization method for 3 dB 90 ° hybrid coupler is proposed. The proposed structure is composed of a conventional structure with a coupled line section inserted in the low impedance section. The proposed coupler occupies an area of only 9.6% compared to a conventional branch-line coupler, and reveals comparable S-parameter characteristics in the operation band. Furthermore, the proposed structure demonstrates a harmonic suppression property due to the a periodicity at odd order harmonics.
Keywords :
S-parameters; harmonics suppression; waveguide couplers; S-parameter; coupled line section; harmonic suppression; miniaturized hybrid coupler; odd order harmonics; spurious rejection; Bandwidth; Couplers; Dual band; Harmonics suppression; Impedance; Microwave theory and techniques; Branch line coupler; coupled line section; microwave component; miniaturization;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2014.2359157
Filename :
6908036
Link To Document :
