Band-Broadening Design Technique of CRLH-TLs Dual-Band Branch-Line Couplers Using CRLH-TLs Matching Networks
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概要
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This paper treats a band-broadening design technique of a dual-band branch-line coupler with matching networks composed of an impedance step and a short-circuited stub based on the equivalent admittance approach. By replacing each right-handed transmission line (RH-TL) with a composite right/left-handed transmission line (CRLH-TL), very flat couplings over a relative bandwidth of about 10% can be obtained at two arbitrary operating frequencies in comparison with previous CRLH-TLs branch-line couplers. Furthermore, by adding periodical open-circuited stubs into RH-TLs of the designed CRLH-TLs branch-line coupler with matching networks, the entire size of the coupler can be reduced to about 50%. Verification of these band-broadening and size-reduction design techniques can be also shown by an electromagnetic simulation and experiment.
- （社）電子情報通信学会の論文
- 2010-07-01
著者
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KAWAI Tadashi
Department of Electrical Engineering and Computer Sciences, Graduate School of Engineering, Universi
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Ohta Isao
Department Of Electrical Engineering And Computer Sciences Graduate School Of Engineering University
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Enokihara Akira
Department Of Electrical Engineering And Computer Sciences Graduate School Of Engineering University
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Nakamura Miku
Department Of Electrical Engineering And Computer Sciences Graduate School Of Engineering University
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Kawai Tadashi
Department Of Civil Engineering College Of Industrial Technology Nihon University
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Kawai Tadashi
Department Of Electrical Engineering And Computer Sciences Graduate School Of Engineering University
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Kawai Tadashi
Department Of Applied Chemistry Graduate School Of Engineering Tokyo Metropolitan University
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