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Novel microstrip backward coupler with metamaterial cells for fully planar fabrication techniques
Author(s) -
Jarauta E.,
Laso M. A. G.,
Lopetegi T.,
Falcone F.,
Beruete M.,
Baena J. D.,
Marcotegui A.,
Bonache J.,
García J.,
Marqués R.,
Martín F.
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21579
Subject(s) - microstrip , planar , metamaterial , microwave , fabrication , ground plane , split ring resonator , resonator , capacitive sensing , power dividers and directional couplers , hybrid coupler , capacitive coupling , engineering , coupling (piping) , electronic engineering , optoelectronics , rat race coupler , electrical engineering , materials science , telecommunications , computer science , voltage , mechanical engineering , medicine , computer graphics (images) , alternative medicine , pathology , antenna (radio)
By using a recently proposed approach to synthesize 1D metamaterials in planar circuit technology, compatible with fully planar fabrication techniques, a novel backward coupler has been designed and fabricated. It has been implemented in microstrip technology by means of complementary split‐ring resonators (CSRRs), etched in the ground plane, and series capacitive gaps. This way, we obtain the necessary left‐handed properties for reversing the forward coupling (typical of co‐directional coupled‐line couplers) into backward coupling. The simulation as well as measurement results confirm the enhanced properties of the proposed couplers. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1205–1209, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21579