Broadband Transition of Substrate-Integrated Waveguide-to-Air-Filled Rectangular Waveguide

• Published in: IEEE microwave and wireless components letters Vol. 28; no. 11; pp. 966 - 968
• Main Authors: Mohamed, Issa, Sebak, Abdel Razik
• Format: Journal Article
• Language: English
• Published: IEEE 01.11.2018
• Subjects: <italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">V -band; Broadband antennas; Broadband communication; Insertion loss; Loss measurement; Rectangular waveguide (RWG) transition; Rectangular waveguides; Substrate integrated waveguides; substrate-integrated waveguide (SIW); Waveguide transitions; WR-15 waveguide
• ISSN: 1531-1309; 1558-1764
• DOI: 10.1109/LMWC.2018.2871330

A single-layer right-angle broadband transition between the substrate-integrated waveguide and air-filled standard rectangular waveguide is proposed and demonstrated at the V-band. An aperture coupled patch with two pairs of inductive posts is employed to form the transition. An impedance bandwidth wider than 48% for return loss less than −10 dB is achieved. The proposed back-to-back transition is fabricated on a single layer substrate using the printed circuit board technology. The measured results of back-to-back prototype show that the insertion loss of a single transition is less than 0.5 dB. The measured results show a good agreement with HFSS simulation results. This transition with compact size, wide bandwidth, and low cost can be used for a variety of millimeter-wave circuits and systems.