A 3-dB Coupler in Slow Wave Substrate Integrated Waveguide Technology

This letter presents the design, simulation, and measurement results of a 3-dB coupler in slow wave (SW) substrate integrated waveguide technology at 11 GHz. It shows the possibility of reducing by 70% of the surface area without significant increase in insertion loss. The topology relies on a unifo...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 29; no. 4; pp. 270 - 272
Main Authors Bertrand, Matthieu, El Dirani, Houssein, Pistono, Emmanuel, Kaddour, Darine, Puyal, Vincent, Ferrari, Philippe
Format Journal Article
LanguageEnglish
Published IEEE 01.04.2019
Institute of Electrical and Electronics Engineers
Subjects
Bandwidth
Coplanar waveguides
Coupler
Couplers
Couplings
Engineering Sciences
Micro and nanotechnologies
Microelectronics
passive circuits
slow wave (SW) effect
Substrates
Transmission line measurements
Waveguide components
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Summary:This letter presents the design, simulation, and measurement results of a 3-dB coupler in slow wave (SW) substrate integrated waveguide technology at 11 GHz. It shows the possibility of reducing by 70% of the surface area without significant increase in insertion loss. The topology relies on a uniform distribution of blind via-holes, creating a distributed SW effect. It is therefore applicable to already existing coupling structures, in this case, the short-slot coupler. An equivalent homogeneous substrate defined by an increased permittivity is used to simplify the optimization of the structure. Finally, a good agreement is obtained between simulation and measurement.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2019.2900239