Planar 2-D Scanning SIW Multibeam Array With Low Sidelobe Level for Millimeter-Wave Applications | IEEE Journals & Magazine | IEEE Xplore

Planar 2-D Scanning SIW Multibeam Array With Low Sidelobe Level for Millimeter-Wave Applications


Abstract:

A two-dimensionally (2-D) scanning multibeam array with planar structure and low sidelobe level (SLL) is realized in this paper. It is for the first time that the SLL of ...Show More

Abstract:

A two-dimensionally (2-D) scanning multibeam array with planar structure and low sidelobe level (SLL) is realized in this paper. It is for the first time that the SLL of 2-D scanning multibeam array is properly addressed. To suppress the SLL, a 4 × 16 beam-forming network (BFN) is proposed in this paper. Different from the existing schemes, such BFN can provide tapered illuminations in two orthogonal directions and thus can be applied to realize low-SLL 2-D scanning beams. The proposed 4 × 16 BFN is formed by interconnecting two sets of sub-BFNs, each of which is stacked by several 2 × 4 Butler matrices (BMs). Like other 2-D scanning schemes, the preliminary 4 × 16 BFN is of 3-D topology so that it is challenging to be integrated into planar substrate integrated waveguide (SIW) structure. Facing this problem, some modifications of the proposed topology are conducted. Operation principle, simulation, and experiment of a planar, low-SLL 2-D scanning multibeam array operating at 28 GHz are illustrated, which can help to demonstrate its feasibility for millimeter-wave applications.
Published in: IEEE Transactions on Antennas and Propagation ( Volume: 67, Issue: 7, July 2019)
Page(s): 4570 - 4578
Date of Publication: 26 March 2019

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