Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/120003
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Type: Journal article
Title: A reconfigurable filter using defected ground structure for wideband common-mode suppression
Author: Zeng, Z.
Chen, S.
Fumeaux, C.
Citation: IEEE Access, 2019; 7:36980-36990
Publisher: IEEE
Issue Date: 2019
ISSN: 2169-3536
2169-3536
Statement of
Responsibility: 
Zhibin Zeng, Shengjian Jammy Chen, Christophe Fumeaux
Abstract: A wideband common-mode (CM) suppression reconfigurable filter is proposed for high-speed all-pass differential circuits. The filter adopts three varactor-loaded compact defected ground structures (DGSs) to achieve continuous reconfigurability in its operation frequency with a large CM suppression dynamic range in the bandwidth. The varactors play an important role in widening the accessible instantaneous bandwidth and miniaturizing the structure. The three DGS cells with a total area of 15 mm × 10 mm are implemented symmetrically under the differential lines, to obtain reconfigurable CM bandstop characteristics which can be continuously adjusted from 1.8 to 8.1 GHz. A coupled LC resonator equivalent model is developed to represent and analyze the proposed filter, which explains its operation principle and assists in accelerating the reconfiguration design method. A good agreement between full-wave simulations and measured results is demonstrated, which validates the proposed design.
Keywords: Reconfigurable filter; defected ground structures; common-mode suppression; varactor diode
Rights: © 2019 IEEE. Translations and content mining are permitted for academic research only.
RMID: 0030113349
DOI: 10.1109/ACCESS.2019.2906340
Appears in Collections:Electrical and Electronic Engineering publications

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