DESIGN OF BANDPASS FILTER WITH COMMON MODE SUPPRESSION USING S-SHAPED COMPLEMENTARY SPLIT RING RESONATOR FORWIRELESS APPLICATIONBYS.SANGEETHAII YEAR M.E-APPLIED ELECTRONICS

GUIDE NAMEMrs.R.JOTHICHITRAASSISTANT PROFESSORDEPARTMENT OF ECE

AGENDA IntroductionLiterature surveyProblem formulationObjectiveModelSoftware usedSummaryReferences

INTRODUCTIONAn antenna is an arrangement of one or more conductors, usually called elements used to transmit and receive information.

Microstrip Patch Antenna consists of patch which is a narrowband, wide-beam antenna such as a printed circuits board.

Common microstrip antenna shapes are square, rectangular, circular and elliptical .

CONTI.Microstrip Patch Antenna with Metamaterials(MM) for Wireless Application.

Split Ring Resonators are artificially produced structure.

Band Pass filter design with common-mode suppression using s-shaped complementary split ring resonator.

LITERATURE SURVEY C.-H. Tsai and T. Wu, A broadband and miniaturized common-mode filter for gigahertz differential signals based on negative-permittivity metamaterials, IEEE Trans. Microw. Theory Tech., vol. 58, no. 1, pp.195202, Jan. 2010.

Differential signals transmission keeps good signal integrity & posses low electromagnetic emission (or) EMI

Two discrepancy: Parameter inaccuracy in fabrication toleranceParasitic effect of probing pads

LITERATURE SURVEYJ. Naqui, A. Fernandez-Prieto, M. Durn-Sindreu, F. Mesa, J. Martel, F. Medina, and F. Martn, Common mode suppression in microstrip differential lines by means of complementary split ring resonators: Theory and applications, IEEE Trans. Microw. Theory Tech., vol. 60, no. 10, pp. 30233034, Oct. 2012.Complementary split ring resonator are useful for suppression of common mode in microstrip differential line.Strategies to enhance the noise rejection To tune the resonace frequency of several resonators in order to cover a wide band.To enhance the bandwidth of individual resonator.

LITERATURE SURVEY P. Velez, J. Naqui, A. Fernandez-Prieto, M. Durn-Sindreu, J.Bonache, J. Martel, F. Medina, and F. Martn, Differential bandpass filter with common-mode suppression based on open split ring resonators and open complementary split ring resonators, IEEE Trans.Microw. Theory Tech., vol. 23, no. 1, pp. 2224, Jan. 2013.

Differential bandpass filter is implemented by combining open split ring resonators and open complementary split ring resonators.Easy design & FabricationSmall sizeDisadvantage:Filter performance is poor.

LITERATURE SURVEYS. Wu, C.-H. Tsai, T. Wu, and T. Itoh, A novel wideband commonmode suppression filter for gigahertz differential signals using coupled patterned ground structure, IEEE Trans. Microw. Theory Tech., vol. 57, no. 4, pp. 848855, Apr. 2009.Low-cost Common-mode filter designed for gigahertz high-speed signals with the largest bandwidth .Compact size.There are two main requirements for such filters. The first one is broadband suppression for common-mode noise andThe second one is low insertion loss and phase distortion for differential signals.

PROBLEM FORMULATION A differential balanced filter that passes the desired frequency response of the differential signal, while suppressing the common-mode noise is one of the main building blocks in balanced circuits.

Size reduction.

Common-mode rejection ratio is better.

OBJECTIVETo design a Bandpass filters , are a demand in modern communication system using Ansoft HFSS.Differential mode is efficient method to increase the signal immunity toenvironmental noise,electromagnetic interference (EMI) &crosstalk.Miniaturization of devices.Reduction of common mode noise .

PROPOSED MODELDifferential microstrip line loaded with (a) a pair of rectangular single ring CSRRs, and (b) an S-shaped CSRR.

CONTISize and operation frequency are two main factors in designing the common-mode filter for gigahertz differential signals.

Resonators are excited by electric field.

This passes a desired frequency & rejects the other frequencies which behave as a bandpass filter.

Software UsedAnsoft HFSS is the industry standard simulation tool for electromagnetic fields.

HFSS is High Frequency Structure Simulator.

It is essential for the design of high frequency and high speed component .

It evaluate Signal Quality,include transmission path loss,reflection losses due impedance matching.

SUMMARYSize is reduced.

Common-mode noise rejection is less.

Wide band application

REFERENCES[1] S. Wu, C.-H. Tsai, T. Wu, and T. Itoh, A novel wideband commonmode suppression filter for gigahertz differential signals using coupled patterned ground structure, IEEE Trans. Microw. Theory Tech., vol. 57, no. 4, pp. 848855, Apr. 2009.

[2] C.-H. Tsai and T. Wu, A broadband and miniaturized common-mode filter for gigahertz differential signals based on negative-permittivity metamaterials, IEEE Trans. Microw. Theory Tech., vol. 58, no. 1, pp. 195202, Jan. 2010.

[3] J. Naqui, A. Fernandez-Prieto, M. Durn-Sindreu, F. Mesa, J. Martel, F. Medina, and F. Martn, Common-mode suppression in microstrip differential lines by means of complementary split ring resonators: Theory and applications, IEEE Trans. Microw. Theory Tech., vol. 60, no. 10, pp. 30233034, Oct. 2012.

[4] T. B. Lim and L. Zhu, A differential-mode wideband bandpass filter on microstrip line for UWB application, IEEE Trans. Microw. Theory Tech., vol. 19, no. 10, pp. 632634, Oct. 2009.

REFERENCES[5] T. B. Lim and L. Zhu, Highly selective differential-mode wideband bandpass filter for UWB application, IEEE Trans. Microw. Theory Tech., vol. 21, no. 3, pp. 133135, Mar. 2011.

[6]S. Shi,W.-W.Choi,W. Che,K.-W.Tam, andQ. Xue, Ultra-wideband differential bandpass filter with narrow notched band and improved common-mode suppression by DGS, IEEE Trans. Microw. Theory Tech., vol. 22, no. 4, pp. 185187, Apr. 2012.

[7] P. Velez, J. Naqui, A. Fernandez-Prieto, M. Durn-Sindreu, J. Bonache, J. Martel, F. Medina, and F. Martn, Differential bandpass filter with common-mode suppression based on open split ring resonators and open complementary split ring resonators, IEEE Trans. Microw. Theory Tech., vol. 23, no. 1, pp. 2224, Jan. 2013.

[8] A.K. Horestani, M. Durn-Sindreu, J. Naqui, C. Fumeaux, and F.Martn, Coplanar waveguides loaded with S-shaped split ring resonators and their application to compact bandpass filter design, IEEE Trans. Microw. Theory Tech., submitted for publication.

REFERENCES[9] M. Gil, J. Bonache, I. Gil, J. Garca-Garca, and F. Martn, On the transmission properties of left-handed microstrip lines implemented by complementary split rings resonators, Int. J. Numer. Modelling: Electron. Netw., Devices Fields, vol. 19, no. 2, pp. 87103, Mar. 2006.

[10] J. Bonache, M. Gil, I. Gil, J. Garca-Garca, and F. Martn, On the electrical characteristics of complementary metamaterial resonators, IEEE Trans. Microw. Theory Tech., vol. 16, no. 10, pp. 543545, Oct.

11] J. S. Hong and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications. New York: Wiley, 2001.