A wideband 3-dB directional coupler in GGW for use in V-Band communication systems
Journal article, 2020

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 flatness 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.

Gap waveguide technology

directional coupler



Marzieh Nasri

University of Kashan

D. Zarifi

University of Kashan

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

IEEE Access

2169-3536 (ISSN)

Vol. 8 17819-17823 8966248

Subject Categories

Aerospace Engineering

Other Physics Topics

Other Electrical Engineering, Electronic Engineering, Information Engineering



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