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Miniaturized Dual-Band Negative Group Delay Circuit Using Dual-Plane Defected Structures
- Issue Date
- Aug-2014
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- Distributed transmission line; dual plane defected structures; dual-band negative group delay circuit (NGDC)
- Citation
- IEEE Microwave and Wireless Components Letters, v.24, no.8, pp 521 - 523
- Pages
- 3
- Journal Title
- IEEE Microwave and Wireless Components Letters
- Volume
- 24
- Number
- 8
- Start Page
- 521
- End Page
- 523
- ISSN
- 1531-1309
1558-1764
- Abstract
- In this letter, a design for a dual-band negative group delay circuit (NGDC) using dual-plane U-shaped defected structures is presented. The center frequency and group delay (GD) time of each band are separately controlled by a defected microstrip structure (DMS) and a defected ground structure (DGS) with resistors connected across the DMS and DGS slots. To verify the design concept, the NGDC is designed, fabricated, and compared with the circuit simulation. To get a wideband bandwidth, two NGDCs with different center frequencies are connected in a cascade design. Fromthe measurements, theGD times of -4.54 +/- 0.6 ns and -4.20 +/- 0.5 ns are obtained at 3.46-3.58 GHz and 5.10-5.20 GHz, respectively.
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Related Researcher
- Lim, Jong sik
- College of Engineering (Department of Electrical Engineering)