A mmWave Wideband Slot Array Antenna Based on Ridge Gap Waveguide With 30% Bandwidth
Journal article, 2018
A wideband 8 x 8 element slot antenna array based on ridge gap waveguide feeding network has been proposed for mmWave applications. The antenna subarray consists of four radiating slots which are excited by a groove gap cavity layer. Compared with previously published works, the proposed planar antenna array has quite wide impedance bandwidth. The antenna covers a wideband of 50-67.8 GHz with 30% impedance bandwidth (VSWR < 2). Also, the antenna has only 2.5 dB gain variation over the entire bandwidth which implies also good radiation characteristics for the proposed antenna. The maximum measured gain value is about 27.5 dBi with a total efficiency of 80% for the proposed antenna within the band of interest. With this performance, the proposed antenna array is a promising candidate for mmWave communication systems.
Full corporate feeding
gap waveguide technology
planar slot array
wideband
Author
Ali Farahbakhsh
Graduate University of Advanced Technology
Davood Zarifi
University of Kashan
Ashraf Uz Zaman
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
IEEE Transactions on Antennas and Propagation
0018926x (ISSN) 15582221 (eISSN)
Vol. 66 2 1008-1013 8186243Subject Categories
Telecommunications
Communication Systems
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/TAP.2017.2782263