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2.14/3.5 GHz novel dual-band negative group delay circuit design based on composite right/left handed transmission line

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7 Author(s)
Heungjae Choi ; Dept. of Electron. & Inf. Eng., Chonbuk Nat. Univ., Jeonju, South Korea ; Sungun Shim ; Yongchae Jeong ; Jongsik Lim
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This paper proposes a novel design and implementation of a dual-band negative group delay circuit (NGDC) using composite right/left handed (CRLH) transmission line. CRLH λ/4 short stubs and a broadband 3dB 90° hybrid coupler are employed to obtain simultaneously the negative group delay (NGD) condition at two separate bands. The proposed design methodology was used to design a dual-band negative group delay circuit for the frequency bands at 2.14 and 3.5 GHz. Measured group delays were about -7.2 and -6.5 ns at two operational frequencies.

Published in:

Microwave Conference (EuMC), 2010 European

Date of Conference:

28-30 Sept. 2010