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A multi-layer gap waveguide array antenna suitable for manufactured by die-sink EDM

Abbas Vosoogh (Institutionen för signaler och system, Antennsystem) ; Per-Simon Kildal (Institutionen för signaler och system, Antennsystem) ; Vessen Vassilev (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik)
2016 10th European Conference on Antennas and Propagation, EuCAP 2016 (2164-3342). p. 7481259. (2016)
[Konferensbidrag, refereegranskat]

In this paper, a multilayer wideband slot array antenna is presented for high gain applications at V-band. The proposed antenna consists of three unconnected metal layers based on the recently introduced gap waveguide technology. A 2×2 cavity-backed slot subarray is fed by a ridge gap waveguide corporate distribution network. The subarray is optimized to have wide bandwidth and low grating lobes in an infinite array environment. A simple slot-tilting method is used to fulfill the radiation pattern requirement of the ETSI 302 standard for fixed radio links. A prototype consisting of 16×16 slots is manufactured by die-sink Electric Discharge Machining (EDM), a fast modern planar-3D spark machining method. The measured antenna has a relative bandwidth of 18% with input reflection coefficient better than -10 dB, and the radiation patterns satisfy the ETSI 302 standard co-polar sidelobe envelope over 56-67 GHz frequency band. The measured total aperture efficiency is over most of the frequency band better than 80%.

Nyckelord: EDM; gap waveguide; high efficiency; millimeter wave; slot array antenna

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Denna post skapades 2016-12-19. Senast ändrad 2017-07-12.
CPL Pubid: 246316


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Institutioner (Chalmers)

Institutionen för signaler och system, Antennsystem (2014-2017)
Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik


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