Taher, H. and Farrell, Ronan (2016) Highly miniaturized wideband negative group delay circuit using effective negative dielectric permittivity stopband microstrip lines. In: 46th European Microwave Conference (EuMC) 2016. IEEE, pp. 112-115. ISBN 9782874870439

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Abstract

n this paper, a effective negative dielectric permittivity (e) phenomenon is used to obtain compact negative group delay circuit (NGDC). Rectangular complementary split ring resonator (RCSRR) etched on the ground of microstrip line (MSL) is utilized to stimulate this behaviour. Firstly, the desired location of the target delay (f) is solely determined using the unit dimensions. Then, the target GD is fully controlled using external resistor (R) connected across the external rectangle of the previously determined RCSRR. Design curves of the proposed structure are established and employed to design NGDC with GD of -5 ns at fo of 3.5 GHz. The designed NGDC accomplishes 62% size diminution compared to the smallest circuit size that has ever been achieved before. Moreover, 0.30 GHz zero NGD bandwidth (BW) is achieved. Excellent agreement is noticed between the simulation results of the proposed design and the measurements of the fabricated circuit.

Item Type:	Book Section
Additional Information:	This research is supported by Science Foundation Ireland under Grant No. 10/CE/I1853. The authors appreciatively acknowledge this support. Dr. Hany is also Associate Prof. Researcher at Electronic Research Institute (ERI)-Giza-Egypt.
Keywords:	Microstrip transmission line; negative-e material; complementary split ring resonators; negative group delay circuit (NGDC);
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	10302
Identification Number:	https://doi.org/10.1109/EuMC.2016.7824290
Depositing User:	Ronan Farrell
Date Deposited:	10 Dec 2018 17:56
Publisher:	IEEE
Refereed:	Yes
Funders:	Science Foundation Ireland (SFI)
URI:	https://ieeexplore.ieee.org
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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