Theoretical Investigation on Metamaterial Coupler: A Comparative Study
Sneha Radadia1, Ved Vyas Dwivedi2, Rachana Jani3

1Sneha Radadia, V.T. Patel of Electronics &Communication, Chandubhai S Patel Institute of Technology, Changa, Anand (Gujarat), India.
2Dr. Ved Vyas Dwivedi, Principal of Noble Group of Institution, Junagadh, India.
3Asso.Prof. Rachana Jani, V.T. Patel of Electronics & communication, Chandubhai S Patel Institute of Technology, Changa, Anand (Gujarat), India.

Manuscript received on 18 April 2012 | Revised Manuscript received on 25 April 2012 | Manuscript published on 30 April 2012 | PP: 43-47 | Volume-1 Issue-1, April 2012 | Retrieval Number: A0136021112/2012©BEIESP
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Abstract: Two novel edge-coupler-line composite right/lefthanded metamaterial couplers are presented in this paper, a symmetric “impedance coupler” and an asymmetric “phase coupler”, explained by a even/odd mode analysis. These two couplers are based on fundamentally different principles but exhibit the advantage of providing arbitrary coupling levels(up to quasi-complete coupling), where as conventional edgecoupled couplers are typically limited to less than 10-dB maximum coupling, while conserving the broad-bandwidth Benefit of their convention counterparts. The coupler is shown to exhibit broad bandwidth and tight coupling.
Keywords: Right – Left-Handed (CRLH) Transmission Lines (Tls), Coupled Lines, Metamaterials.

Scope of the Article: Theoretical and Applied Fracture Mechanics