Size Miniaturized Rat-Race Coupler Using Open Complementary Split Ring Resonator

Karthikeyan SHOLAMPETTAI SUBRAMANIAN  Rakhesh Singh KSHETRIMAYUM  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E94-C   No.10   pp.1601-1604
Publication Date: 2011/10/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E94.C.1601
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Passive Devices and Circuits
Keyword: 
open complementary split ring resonator (OCSRR),  rat-race coupler,  harmonic suppression,  

Full Text: PDF(1.1MB)>>
Buy this Article




Summary: 
In this paper, a rat-race hybrid coupler based on an open complementary split ring resonator (OCSRR) is presented. By embedding the OCSRR in the microstrip transmission line, slow-wave effect is introduced to achieve size reduction. The proposed rat-race coupler size is 37% smaller than the conventional rat-race coupler. Besides, the proposed coupler provides better third harmonic suppression up to 35 dB. The simulated results are compared with the measured data and good agreement is reported.