논문 해외 국제전문학술지(SCI급) A novel design for a dual-band negative group delay circuit
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2011-01
- 저자명 Choi, H.,Jung, Y.-B.공동(참여),Eom, S.-Y.,Lim, J.,Jeong, Y.
- 학술지명 IEEE Microwave and Wireless Components Letters
- 발행처명 Institute of Electrical and Electronics Engineers
- 발행국가 해외
- 논문언어 외국어
홈페이지논문 초록 (Abstract)
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 λ/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 -3.0 ± 0.4 ns and -3.1 ± 0.5 ns are obtained at 2.12-2.16 GHz and 3.46-3.54 GHz, respectively.