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학술지 A Novel Design for a Dual-Band Negative Group Delay Circuit
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저자
최흥재, 정용채, 임종식, 엄순영, 정영배
발행일
201101
출처
IEEE Microwave and Wireless Components Letters, v.21 no.1, pp.19-21
ISSN
1531-1309
출판사
IEEE
DOI
https://dx.doi.org/10.1109/LMWC.2010.2089675
협약과제
10MR3900, 지능형 안테나 기술개발, 전순익
초록
In this letter, a novel design for a dual-band negative group delay circuit (NGDC) is proposed. Based on the topology of a single-band reflection type NGDC, composite right/left handed {\\lambda}/4 short stubs are employed to obtain a negative group delay (NGD) at two separate frequency bands simultaneously. In order to achieve a bandwidth extension, the proposed structure consists of a two-stage dual-band NGDC with different center frequencies connected in a cascade. According to the measurements performed for wide-band code division multiple access and worldwide interoperability for microwave access, an NGD of -3.0짹 0.4 ns and -3.1짹 0.5 ns are obtained at 2.12-2.16 GHz and 3.46-3.54 GHz, respectively. © 2010 IEEE.
키워드
Composite right/left handed (CRLH), dual-band, negative group delay (NGD), wide-band code division multiple access (WCDMA), worldwide interoperability for microwave access (WiMAX)
KSP 제안 키워드
6 GHz, Bandwidth extension, Center frequency, Code division Multiple Access(CDMA), Delay circuit, Dual-band, Negative group delay, Reflection-type, Short stubs, Two-Stage, Wide band