Miniaturized Rat-Race Coupler With Harmonic Suppression

Author

Wei Nie ; Sha Luo ; Yong-Xin Guo ; Yong Fan

Author_Institution

Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

24

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

754

Lastpage

756

Abstract

In this letter, a miniaturized rat-race coupler with harmonic suppression is proposed. The quarter-wavelength transmission lines in a traditional rat-race coupler are substituted by their equivalent stub-loaded transmission lines. As a result, the overall size is significantly reduced while maintaining the coupler performance. Furthermore, one transmission zero is introduced by the stubs to suppress the harmonics. Finally, a miniaturized rat-race coupler with harmonic suppression is designed, fabricated and measured, and the measurement verifies the theoretical and simulation analysis.

Keywords

directional couplers; harmonics suppression; transmission lines; equivalent stub-loaded transmission lines; harmonic suppression; miniaturized rat-race coupler; quarter-wavelength transmission lines; transmission zero; Couplers; Harmonics suppression; Impedance; Transmission line measurements; Transmission lines; Harmonic suppression; miniaturization; rat-race coupler;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2014.2350253

Filename

6889047