| Authors | مرضیه نصری محمودابادی,داود ظریفی,Ashraf Uz Zaman |
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| Journal | IEEE Access |
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| Page number | 17819 |
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| Volume number | 8 |
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| IF | 4.098 |
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| Paper Type | Full Paper |
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| Published At | 2020-01-22 |
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| Journal Grade | Scientific - research |
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| Journal Type | Electronic |
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| Journal Country | Iran, Islamic Republic Of |
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| Journal Index | SCOPUS ,JCR |
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Abstract
In this article, a broadband 3-dB directional coupler is proposed using groove gap waveguide
(GGW) structures. Gap waveguide technology has been introduced to overcome manufacturing and
assembling challenges of different millimeter-wave components and devices. The presented coupler has
wideband coupling atness with low return loss in 60-GHz frequency band and can be easily adapted to
other frequency ranges. Experimentally, a sample prototype of the proposed 3-dB coupler has been designed
and fabricated. The measured return loss and isolation are better than 20 dB and the power-split unbalance
within 0.5 dB is obtained over the frequency range from 57 to 74 GHz (26% BW). The proposed structure
has the capability of easily integrating with other millimeter-wave components.
