Series-configuration of multi-line directional-coupler sections with improved coupling

Schmiedel, H.

doi:10.1109/mwsym.2004.1335888

Cited by 3 publications

References 5 publications

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A review of hybrid couplers: State‐of‐the‐art, applications, design issues and challenges

Abdulbari

Rahim

Soh

et al. 2021

Int J Numerical Modelling

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In recent years, the hybrid branch‐line coupler has attracted much attention due to its appealing features such as of low cost and ease in fabrication for wireless communications. The fifth‐generation cellular networks promise to support several wireless technologies by capitalizing a multitude of frequencies and increase data rates. To achieve that, the butler matrix technique can be used to enhance both bandwidth and data rate with the implementation of beamforming. Conventional hybrid couplers are the main component to build a butler matrix, but they are generally bulky in size and narrow in bandwidth. Moreover, requirements imposed by newer wireless technologies makes the efforts in improving size compactness and bandwidth even more challenging. On the other hand, several techniques have been proposed in literature to solve both issues. This study focuses on the design challenges and issues of hybrid coupler designs and technologies, besides underlining their promising potential. In this context, several techniques for hybrid coupler to achieve the required bandwidth and size reduction are highlighted, such as the T‐shape, meander line, two sections, three‐section, and parallel couple lines.

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A review of hybrid couplers: State‐of‐the‐art, applications, design issues and challenges

Abdulbari

Rahim

Soh

et al. 2021

Int J Numerical Modelling

View full text Add to dashboard Cite

show abstract

A Novel Low-Loss Millimeter-Wave 3-dB 90° Ridge-Gap Coupler Using Large Aperture Progressive Phase Compensation

et al. 2017

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High coupling achieved by unequal and nonuniform characteristic impedances within three-line couplers

Schmiedel

2005

2005 European Microwave Conference

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Series-configuration of multi-line directional-coupler sections with improved coupling

Cited by 3 publications

References 5 publications

A review of hybrid couplers: State‐of‐the‐art, applications, design issues and challenges

A review of hybrid couplers: State‐of‐the‐art, applications, design issues and challenges

A Novel Low-Loss Millimeter-Wave 3-dB 90° Ridge-Gap Coupler Using Large Aperture Progressive Phase Compensation

High coupling achieved by unequal and nonuniform characteristic impedances within three-line couplers

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