Design and Measurement of the Plate Laminated Waveguide Slot Array Antenna and Its Feasibility for Wireless Link System in the 120 GHz Band

Dongjin KIM  Jiro HIROKAWA  Kimio SAKURAI  Makoto ANDO  Takuma TAKADA  Tadao NAGATSUMA  Jun TAKEUCHI  Akihiko HIRATA  

IEICE TRANSACTIONS on Communications   Vol.E96-B   No.8   pp.2102-2111
Publication Date: 2013/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E96.B.2102
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antennas and Propagation
waveguide antenna,  diffusion bonding,  full corporate feed,  data transmission,  

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We design and fabricate a double-layer hollow-waveguide slot array antenna with wide bandwidth and high antenna efficiency for the 120 GHz band. The antenna is fabricated by diffusion bonding of laminated thin metal plates for high precision and perfect electrical contact. The 1616-element antenna shows more than 70% antenna efficiency over a 13 GHz bandwidth. Furthermore, it realizes error-free data transmission in 2.5 m distance at up to 10 Gbit/s. To our knowledge, this is the first report of the design and fabrication of a high-efficiency wideband planar antenna for the 120 GHz band.