High-Efficiency and Wideband Aperiodic Array of Uniformly Excited Slotted Waveguide Antennas Designed Through Compressive Sensing
Artikel i vetenskaplig tidskrift, 2019

A uniformly excited slotted waveguide (WG) antenna array for point-to-point communication is presented. The European Telecommunications Standards Institute class-II sidelobe level requirements are satisfied in all planes at almost all frequencies by the aperiodic arrangement of several parallel ridge WGs in the E-plane, each with a different number of equally spaced radiating slots along the H-plane. Both the optimal separation and number of slots per WG are determined through a compressive sensing approach. This results in 160 slots organized in 16 columns offering 29 dBi peak gain at Ka-band. A dedicated 16-way analog beamforming network is designed to provide the optimal nonuniform and in-phase excitation of the 16 WG channels, thereby compensating for the variable number of slots per column and the phase difference due to the E-plane aperiodicity. The measurements confirm the simulated reflection coefficient and radiation pattern characteristics, as well as the high aperture efficiency (70%-90%) over a 13.6% relative bandwidth (27.5-31.5 GHz) and <2 dB gain variation over 3.75 GHz (12.7%).

Aperiodic array

slotted waveguide (WG) antenna

irregular array

compressive sensing

Författare

Lei Shi

China Academy of Space Technology

Carlo Bencivenni

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Antennsystem

Rob Maaskant

Technische Universiteit Eindhoven

Chalmers, Elektroteknik, Kommunikations- och antennsystem

Johan Wettergren

Ruag Space AB

Johan Pragt

Netherlands Institute for Radio Astronomy (ASTRON)

Marianna Ivashina

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Antennsystem

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 67 5 2992-2999 8606072

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/TAP.2019.2891647

Mer information

Senast uppdaterat

2019-05-20