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Long Hoang Duc
Uppsala Universit
Electrical & Electronics Engineering

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Journal : Bulletin of Electrical Engineering and Informatics

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A design of wideband high-power 3-dB quadrature coupler using defected ground structure for status data transmitting system The Anh Nguyen Dinh; Long Hoang Duc; Duong Bach Gia; Dragos Dancila
Bulletin of Electrical Engineering and Informatics Vol 9, No 1: February 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (644.182 KB) | DOI: 10.11591/eei.v9i1.1699

Abstract

The paper presents a wideband 3-dB quadrature coupler designed for operation at 2 GHz. The presented coupler is based on a broadside-coupled suspended structure in combination with a proposed defected ground structure (DGS) allowing for high power, wide-band and improved harmonic suppression performance. The experimental results show 0.2 dB of insertion loss, return loss of better than 18 dB and isolation of better than 25 dB in the frequency range from 1.74 to 2.67 GHz. The proposed coupler is able to be integrated in the status data transmitting system, which is suitable for vessel monitoring. The fundamental characteristics of the implemented coupler have been measured and verified.
Co-Authors Dragos Dancila Duong Bach Gia The Anh Nguyen Dinh