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A Novel Design for a Dual-Band Negative Group Delay Circuit
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- Authors
- Heungjae Choi, Yongchae Jeong, Jongsik Lim, Soon-Young Eom, Young-Bae Jung
- Issue Date
- 2011-01
- Citation
- IEEE Microwave and Wireless Components Letters, v.21, no.1, pp.19-21
- ISSN
- 1531-1309
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- 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 {\\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.
- KSP Keywords
- 6 GHz, Center frequency, Code division Multiple Access(CDMA), Delay circuit, Dual-band, Negative group delay, Reflection-type, Short stubs, Two-Stage, Wide band, Worldwide interoperability for microwave access(WiMAX)