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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/28137

Title: Design of a 60-GHz Substrate Integrated Waveguide Butler Matrix –a Systematic Approach
Authors: 陳志榮;瞿大雄
Chih-Jung Chen;Member;IEEE;Tah-Hsiung Chu;Member IEEE
Contributors: 國立臺灣海洋大學:通訊與導航工程學系
Keywords: Butler matrix;millimeter wave;multiport measurement;substrate integrated waveguide (SIW)
Date: 2010-07
Issue Date: 2011-10-21T02:36:00Z
Publisher: IEEE Transactions on Microwave Theory and Techniques
Abstract: abstract:A 60-GHz substrate integrated waveguide Butler matrix designed based on a systematic approach is fabricated by a standard single-layer print circuit board process, which is more economical for mass-production than are the advanced processes such as low temperature co-fired ceramic and thick-film process, etc. The systematic approach involves design equations, simulations and measurements. Starting with a set of explicit design equations for the short-slot couplers, one calculates the structure dimensions. The calculated dimensions are then optimized with full-wave simulation to finalize the design of the key components, including the couplers and phase shifters. With the use of noncoaxial multiport measurement technique, the characteristics of the components are acquired through a probe station and a two-port vector network analyzer. Measurement technique plays a critical role in the systematic design approach. By measuring at the intrinsic ports or the wave ports defined in the full-wave simulations, the components are ambiguously verified and then integrated to complete the design of the Butler matrix. The resulting Butler matrix is also verified by the measured eight-port S-matrix, which is shown in good agreement with the simulated one. As the measured results of the Butler matrix show, for the operating bandwidth from 58- to 62-GHz, the reflections and isolations are lower than -13.5-dB and the insertion losses are below 2.5-dB. Much like the measured results of the components, the measured eight-port S-matrix not only verifies the design of the Butler matrix, but also will facilitate the follow-on design of a switched-beam antenna array.
Relation: 58(7), pp.1724-1733
URI: http://ntour.ntou.edu.tw/handle/987654321/28137
Appears in Collections:[通訊與導航工程學系] 期刊論文

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