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http://dx.doi.org/10.5370/KIEE.2010.59.2.374

Analysis of Lumped Element Negative Group Delay Circuit  

Jeong, Yong-Chae (전북대 전자정보공학부)
Choi, Heung-Jae (전북대 전자정보공학부)
Kim, Chul-Dong (세원텔레텍(주))
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.59, no.2, 2010 , pp. 374-379 More about this Journal
Abstract
In this paper, we have mathematically analyzed lumped element type negative group delay circuit (NGDC) and derived general design equation. The applicability of the proposed design equation is validated with mathematical and circuit simulation as well as with experimental results for intentional mobile telecommunication 2000 (IMT-2000) downlink band. As a design example, single branch NGDC with -0.8ns of group delay (GD) for narrow bandwidth of the specific frequency is simulated and fabricated. Finally, $\pi$-network NGDC is proposed and validated to obtain wideband GD response of $-1.7{\pm}0.06$ nsec for 60 MHz.
Keywords
Negative group delay; IMT-2000;
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