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[11] Marc Le Roy, Andr'e P'erennec,Serge
Toutain and L'eon Claude Calvez, "The
Continuously Varying Transmission-Line
Technique-Application to Filter Design",
IEEE Trans. On Microwave Theory and
Techniques,vol.47, no. 9, September1999.
[12] DagerCesardeAlencarandLeonardoR. A.
X. Menezes,memberIEEE,"Direct Synthesis
of MicrowaveFilters Using Modified Smalt
Reflections Theory", MTT-S IMOC'99
Proceedings,1999-
[13] R. E. Collin, Foundationsfor Microwave
Engineering,2nd.New York, MA: McGraw-
Hill,2000
[14] J. S. Park, "An Equivalent Circuit and
Modeling Method for Defected Ground
Structuresand lts Applicationto The Design
of Microwave Circuits," Microw. J. Nov.
2003.[Online].Available:www.micom
[15] N. C. Karmakar,S. M. Roy, and I. Balbin,
"Quasi-StaticModeling of DefectedGround
Structure", IEEE Trans. On Microwave
Theoryand Techniques,vol. 54, no. 5, May
2006.
[16] Han-Jan Chen, Tsung-Hui Huang, Chin-
ShengChang,Lih-ShanChen,Na-Fu War-rg,
Yeong-HerWang,andMau-PhonHoung,"A
Novel Cross-ShapeDGS Applied to Design
Ultra-Wide Stopband Low-Pass Filters",
IEEE Microwave and WirelessComponents
Letters,vol. 16,no.5,MAY 2006.
[17] Adel B. Abdel-Rahman,Anand K. Verma,
Member,IEEE, Ahmed Boutejdar,andA. S.
Omar, "Controlof BandstopResponseof Hi-
Lo MicrostripLow-PassFilter Using Slot in
Gror.nd Plane", IEEE IEEE Trans. On
MicrowaveTheory and Techniques,vol. 52,
no.3,March2004.
etf
tl] J.S.Hong and M.J.Lancaster,"Microstrip
Filtersfor M/Microwave Applications".John
Wiley& Sons,2001.
[2] M-H.Weng,R-Y.Yuan,T-H.Huang,H-J.Chen,
and M-P Houng,"SpuriousSuppressionof a
Microstrip Bandpass Filter Using Three
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Trans. On Ultrasonics, Ferroelectris,and
FrequencyControl,vol.52,r'ro.3,pp-487-490,
March2005.
[3] L. Garde,M. J.Yabar,andC. D. Rio,"Simple
Modelingof DGS to Design ID-PBG Low
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3l , no. 3, pp. 228-232,May 2003.
[4] H.-W.LiLr,X.-W. Sun,andZ.-F.Li, "A Low-
PassFilter of Wide Stopbandwith a Novel
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Strllctllre,"Microw. Opt. Technol.Lett., vol.
40,no.5, pp.431432,Mar.2004.
[5] D. Ahn,J.S.Park,C. S.Kim, J.Kim, Y. Qian,
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usirrgthe Novel Microstrip DefectedGround
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[6] K.Lu, "An Efficient Method for Analysisof
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[8] C. L. Edwards,M. L. Edwards,S. Cheng,R.
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[0] Renatode PdduaMoreira,StudentMember,
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