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

branch-guide

Author

Marzieh Nasri

University of Kashan

D. Zarifi

University of Kashan

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

IEEE Access

2169-3536 (ISSN)

Vol. 8 17819-17823 8966248

Subject Categories

Aerospace Engineering

Other Physics Topics

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ACCESS.2020.2968609

More information

Latest update

5/19/2020