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A Novel Design for a Dual-Band Negative Group Delay Circuit
- Issue Date
- Jan-2011
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- Composite right/left handed (CRLH); dual-band; negative group delay (NGD); wide-band code division multiple access (WCDMA); worldwide interoperability for microwave access (WiMAX)
- Citation
- IEEE Microwave and Wireless Components Letters, v.21, no.1, pp 19 - 21
- Pages
- 3
- Journal Title
- IEEE Microwave and Wireless Components Letters
- Volume
- 21
- Number
- 1
- Start Page
- 19
- End Page
- 21
- ISSN
- 1531-1309
1558-1764
- 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 -3.0 +/- 0.4 ns and -3.1 +/- 0.5 ns are obtained at 2.12-2.16 GHz and 3.46-3.54 GHz, respectively.
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Related Researcher
- Lim, Jong sik
- College of Engineering (Department of Electrical Engineering)