8 x 8 Ka-Band Dual-Polarized Array Antenna Based on Gap Waveguide Technology
Journal article, 2019

This paper describes an 8 x 8 fully metallic high-efficiency dual-polarized array antenna working at the Ka-band, based on the gap waveguide (GW) concept. The radiating element is a circular aperture backed by two stacked cylindrical cavities, which are orthogonally fed to achieve a dual-polarized performance. Both feeding layers consist of a GW corporate network to reach all the cavities backing each radiating element. Cavities are naturally integrated within the bed of nails hosting grooves and ridges for the guiding electromagnetic (EM) field, leading to a low-profile dual-polarized array in the Ka-band. The experimental results present good agreement with simulations. The measured radiation patterns agree well with the simulation and the antenna provides an average gain over 27 dBi within its operating bandwidth (29.5-31 GHz).


dual polarization

ridge GW (RWG)


gap waveguide (GW)

satellite communication (SATCOM)

groove GW (GGW)


Miguel Ferrando-Rocher

Polytechnic University of Valencia (UPV)

Jose Ignacio Herranz-Herruzo

Polytechnic University of Valencia (UPV)

Alejandro Valero-Nogueira

Polytechnic University of Valencia (UPV)

Bernardo Bernardo-Clemente

Polytechnic University of Valencia (UPV)

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Jian Yang

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 67 7 4579-4588

Subject Categories

Accelerator Physics and Instrumentation

Other Electrical Engineering, Electronic Engineering, Information Engineering



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