2014•Journal of Electromagnetic Waves and ApplicationsRequires access

High directivity DGS-based coupler

D. Packiaraj, K. J. Vinoy, Maneesha Vinodini Ramesh

Abstract

This paper reports a new design of microstrip directional coupler with high directivity. This directional coupler uses corrugated coupled lines and floating conductor in the ground plane of microstrip to enhance coupling. Based on this structure, directional coupler having 4.4% bandwidth has been designed at 4500 MHz with 10 dB coupling and 35 dB directivity. The designed directional coupler has been fabricated and tested for the validity of the design. Measured results are presented in this paper.

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Available abstract

Key concepts: Directivity, Hybrid coupler, Power dividers and directional couplers, Rat-race coupler, Magic tee, Microstrip, Conductor, Bandwidth (computing)