NDLI: Design of low-pass filters using defected ground structure

Content Provider	IEEE Xplore Digital Library
Author	Jong-Sik Lim Chul-Soo Kim Ahn, D. Yong-Chae Jeong Sangwook Nam
Copyright Year	1963
Abstract	A method to design low-pass filters (LPF) having a defected ground structure (DGS) and broadened transmission-line elements is proposed. The previously presented technique for obtaining a three-stage LPF using DGS by Lim et al. is generalized to propose a method that can be applied in design N-pole LPFs for N/spl les/5. As an example, a five-pole LPF having a DGS is designed and measured. Accurate curve-fitting results and the successive design process to determine the required size of the DGS corresponding to the LPF prototype elements are described. The proposed LPF having a DGS, called a DGS-LPF, includes transmission-line elements with very low impedance instead of open stubs in realizing the required shunt capacitance. Therefore, open stubs, teeor cross-junction elements, and high-impedance line sections are not required for the proposed LPF, while they all have been essential in conventional LPFs. Due to the widely broadened transmission-line elements, the size of the DGS-LPF is compact.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	2539
Ending Page	2545
Page Count	7
File Size	631384
File Format	PDF
ISSN	00189480
Volume Number	53
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Low pass filters Periodic structures Transmission lines Prototypes Microwave filters Planar transmission lines Microwave circuits Design methodology Impedance Capacitance periodic structures Defected ground structure (DGS) low-pass filters (LPFs)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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