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    Publications

    Reverse Chronological Order

    [95] J. Henrie, A. Christianson, W. J. Chappell, "Linear-nonlinear interaction's effect on the power dependence of nonlinear distortion products," Applied Physics Letters, vol. 94, 114101 (2009), DOI:10.1063/1.3098068.
    [94] E. Chow, Y. Ouyang, B. Beier, W. J. Chappell, P. Irazoqui, "Evaluation of cardiovascular stents as antennas for implantable wireless applications" Trans. Microwave Theory and Tech. - Biomedical Special Issue, Accepted for publication, 2009.
    [93] A. Christianson, W. J. Chappell, "Measurement of ultra low passive intermodulation with ability to separate current/voltage induced nonlinearities," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 1301-1304.
    [92] A. Wegener, C. Fulton, J. Gregory, W. J. Chappell, "Large area integration of embedded high power RF amplifiers in a thin organic panel," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 801-804.
    [91] X. Liu, L. P. B. Katehi, W. J. Chappell, D. Peroulis, "A 3.4 – 6.2 GHz Continuously tunable electrostatic MEMS resonator with quality factor of 460–530," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 1149-1152.
    [90] S. Jeong, W. J. Chappell, "Lost node recovery in a city-wide wireless sensor network using adaptive preselect filtering," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 229-232.
    [89] S. Moon, S. K. Khanna, W. J. Chappell, "Multilayer silicon RF system-in-package technique using magnetically aligned anisotropic conductive adhesive", IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 797-800.
    [88] C. Fulton, P. Clough, V. Pai, W. Chappell, "A digital array radar with a hierarchical system architecture," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 89-92.
    [87] E. E. Hoppenjans, W. J. Chappell, "The use of high Q toroid inductors for LTCC integrated tunable VHF filters," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 905-908.
    [86] E. Y. Chow, B. Beier, Y. Ouyang, W. J. Chappell, P. P. Irazoqui, "High frequency transcutaneous transmission using stents configured as a dipole radiator for cardiovascular implantable devices," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 1317-1320.
    [85] H. Joshi, H. H. Sigmarsson, S. Moon, D. Peroulis, and W. J Chappell, "High Q Narrowband Tunable Filters With Controllable Bandwidth," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 629-632.
    [84] H. Joshi, H. H. Sigmarsson, S. Moon, D. Peroulis, and W. J Chappell, "Tunable High Q Narrow-Band Triplexer IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 1477-1480.
    [83] H. H. Sigmarsson, A. Christianson, H. Joshi, S. Moon, D. Peroulis, and W.J Chappell, "In-Situ Control of Tunable Evanescent-Mode Cavity Filters Using Differential Mode Monitoring," IEEE MTT-S International Microwave Symposium Digest, June 2009, pp. 633-636.
    [82] Y. Ouyang, D. Love, W.J. Chappell, “Body-worn Distributed MIMO Systems” IEEE Trans. on Vehicular Tech., vol. 58, no. 4, pp. 1752-1765, May 2009.
    [81] E. Y. Chow, C.-L. Yang, A. Chlebowski, S. Moon, W. J. Chappell, and Pedro P. Irazoqui, “Implantable Wireless Telemetry Boards for in-vivo Transocular Transmission”, IEEE Trans. Microwave Theory Tech., vol. 56, no. 12, pp. 3200-3208, Dec. 2008.
    [80] S. Moon, H. H. Sigmarsson, Y. Huang, T. Brummer, S. K. Khanna, and W. Chappell, “Magnetically Aligned Anisotropic Conductive Adhesive for Microwave Applications”, IEEE Trans. on Microwave Theory and Techniques, vol. 56, no. 12, pp. 2942-2949, Dec. 2008.
    [79] W. Xu, W. J. Chappell, R. G. Cooks, Z. Ouyang, “Characterization of electrode surface roughness and its impact on ion trap mass analysis”, J. of Mass Spectrometry, vol. 44, no. 3, pp. 353-360, Nov, 2008.
    [78] S. Moon, and W. Chappell, "Vertical Interconnects using Magnetically Aligned Anisotropic Conductive Adhesive for RF packaging" Proceedings of International Symposium on Microelectronics, International Microelectronics and Packaging Society (IMAPS), Providence, USA, Nov.  2008.
    [77] H. H. Sigmarsson, H. Joshi, D. Peroulis, and W. Chappell, "3-6 GHz Tunable Bandpass Filter using Heavily Loaded Evanescent-mode Cavity Resonators and Piezoelectric Actuators" Proceedings of International Symposium on Microelectronics, International Microelectronics and Packaging Society (IMAPS), Providence, RI, Nov. 2008, pp. 360-366.
    [76] J. Henrie, A. Christianson, and W. J. Chappell, "Cancellation of Passive Intermodulation Distortion in Microwave Networks," in European Microwave Conference. Amsterdam, The Netherlands: IEEE, pp. 1153-1156, Oct. 2008.
    [75] H. H. Sigmarsson, H. Joshi, D. Peroulis, and W. Chappell, "3-6 GHz Tunable Bandpass Filter using Heavily Loaded Evanescent-mode Cavity Resonators and Piezoelectric Actuators" Proceedings of International Symposium on Microelectronics, International Microelectronics and Packaging Society (IMAPS), Providence, USA, 2008, pp. 360-366.
    [74] S. Moon, T. Bruemmer, S. K. Khanna, and W. Chappell, "High-Frequency Characterizaiton of Self-Aligned Z-axis Interconnects on Silicon substrates," Proceedings of Union Radio Scientifique Internationale (URSI), Chicago, USA, no. A06.5, Aug. 2008.
    [73] A. Christianson, J. Henrie , and W. J. Chappell, "Active Monitoring and Control of Tunable Cavity Resonators " Proceedings of Union Radio Scientifique Internationale (URSI), Chicago, USA, no. C07.3, Aug. 2008.
    [72] W. Xu, J. Maas, and W. Chappell, "Multi-physics Simulation for Radio Frequency Ion Trap Chemical Sensing," Proceedings of Union Radio Scientifique Internationale (URSI), Chicago, USA, no. BK.8, Aug. 2008.
    [71] H. Joshi, H. H. Sigmarsson, W. J. Chappell , "Analytical Modeling of Highly Loaded Evanescent-Mode Cavity Resonators for Widely Tunable High-Q Filter Applications," Proceedings of Union Radio Scientifique Internationale (URSI), Chicago, USA, no. D09.6, Aug. 2008.
    [70]

    C.-L. Yang, E. Y. Chow, P. P. Irazoqui, and W. J. Chappell, "RF Powering for Embedded Glaucoma Sensors in Miniature Packages ," Proceedings of Union Radio Scientifique Internationale (URSI), Chicago, USA, no. KP1.7, Aug. 2008.
    [69] Y. Ouyang, and W. J. Chappell, "Wireless propagation Analysis and Measurement in Enclosed Reflective Structures," Proceedings of Union Radio Scientifique Internationale (URSI), Chicago, USA, no. FC.7, Aug. 2008.
    [68]

    J. Henrie, A. Christianson, and W. J. Chappell, "Passive Intermodulation Distortion in Microwave Networks from Coaxial Connectors," Proceedings of Union Radio Scientifique Internationale (URSI), Chicago, USA, no. E08.7, Aug. 2008.
    [67] A. Christianson; J.J. Henrie; and W.J. Chappel, "Higher Order Intermodulation Product Measurement of Passive Components," IEEE Transactions on Microwave Theory and Techniques, vol. 56, no.7, pp.1729-1736, July 2008.
    [66] S. Jeong, C. Yang, J.R. Courter, S. Kim, B.R. Pipes, and W.J. Chappell, “Multilayer Composite for Below Ground Embedded Sensor Networking,” IEEE Antennas and Propagation Symposium (APS), Jul. 2008.
    [65] C. Fulton; W. Chappell, "Low-cost, panelized digital array radar antennas," Microwaves, Communications, Antennas and Electronic Systems, 2008. COMCAS 2008. IEEE International Conference on, pp.1-10, 13-14 May 2008.
    [64] X. Gong, T. Smyth, E. Ghaneie, W. J. Chappell, “High-Q resonators and filters inside advanced low temperature cofired ceramic substrates using fine-scale periodicity,” IEEE Trans. on MTT,  vol. 56, 4, pp. 922 – 930, April 2008.
    [63] Y. Ouyang.; W.J, Chappell "High Frequency Properties of Electro-Textiles for Wearable Antenna Applications," Antennas and Propagation, IEEE Transactions on , vol.56, no.2, pp.381-389, Feb. 2008.
    [62] J. Henrie, A. Christianson, W. J. Chappell, "Prediction of Passive Intermodulation From Coaxial Connectors in Microwave Networks," IEEE Trans. on Microwave Theory and Tech., vol. 56, no.1, pp. 209-216, Jan. 2008.
    [61] Z. Ouyang, L. Gao, M. Fico, W. J. Chappell, R. J. Noll, R. G Cooks, "Quadrupole Ion Traps and Trap Arrays: Geometry, Material, Scale, Performance", European Journal of Mass Spectrometry, 2007, 13, 1, 13-18.
    [60] E. Kinzel, X. Xu, H. H. Sigmarsson, and W. Chappell, "Laser Sintering of Thick-film Conductors for Microelectronic Applications," J. Appl. Phys. vol. 101, no. 063106, Mar. 2007.
    [59] T. Choi, H. Sharifi, H. H. Sigmarsson, W. J. Chappell, S. Mohammadi, L. P. B. Katehi, "3-D Integration of 10 GHz Filter and CMOS Receiver Front-End," IEEE Transactions on Microwave Theory and Techniques,vol. 55, no. 11, pp. 2298-2305, Nov. 2007.
    [58] A. Mahmood, H. H. Sigmarsson, H. Joshi, W. Chappell, and D. Peroulis, "An Evanescent-mode Cavity Resonator Based Thermal Sensor," IEEE Sensors 2007 , vol., no., pp.950-953, 28-31 Oct. 2007.
    [57] Y. Ouyang and W. Chappell, "Distributed body-worn transceiver system with the use of electro-textile antennas," in Proc. IEEE MTT-S Int. Microwave Sym., Jun. 2007, pp. 1229-1232.
    [56] C. L. Yang, and W. Chappell, "Angular Diversity - Prominent for Compact Devices of Wireless Sensor Network in Indoor Environments," IEEE Antennas and Propagation Society International Symposium (APS), Jun. 15 2007.

    [55]

    		 E.E. Hoppenjans, W.J. Chappell, "High Value Passive Component Integration in LTCC Technology," Microwave Symposium, 2007. IEEE/MTT-S International , pp.1913-1916, 3-8 June 2007.
    [54] H. Joshi, H. Sigmarsson, D. Peroulis, W. Chappell, "Highly Loaded Evanescent Cavities for Widely Tunable High-Q Filters," Microwave Symposium, 2007. IEEE/MTT-S International, pp.2133-2136, 3-8 June 2007.
    [53] Miriam Fico, Meng Yu, Zheng Ouyang, R. Graham Cooks, William J. Chappell , "Miniaturization and Geometry Optimization of a Polymer-Based Rectilinear Ion Trap", Analytical Chem., 79, 21, pp. 8076-8082, Oct. 2007.
    [52] E. Kinzel, H. Sigmarsson, X. Xu, and W. Chappell, "Laser Sintering of Thick-Film Conductors for Microelectronics Applications " J. Appl. Phys. 101, 063106 (2007).
    [51] X. Gong, W.H. She, W.J. Chappell, "Aperiodic Artificial Substrates for Multipole Bandpass Filters," Microwaves, Antennas & Propagation, IET , vol. 1, no. 1, pp. 240-247, February 2007.
    [50] L. P. B. Katehi, W.J. Chappell, S. Mohammadi, A. Margomenos, M. Steer, "Heterogeneous Wafer-Scale Circuit Architectures," Microwave Magazine, IEEE , vol.8, no.1, pp.52-69, Feb. 2007 (Refereed IEEE Magazine Article)
    [49] Y. Ouyang, and W. J. Chappell, "Electrotextiles for Body Worn Integrated Silicon Solutions," IEEE 7th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2007), pp. 107-110, Jan. 2007.
    [48] M. Yu, M. Fico, S. Kothari, Z. Ouyang and W. Chappell, "Polymer-Based Ion Trap Chemical Sensor", IEEE Sensors J., vol. 6, no. 6, pp. 1429 - 1434, Dec. 2006.
    [47] H. Joshi, W. J. Chappell, "Dual-Band Lumped-Element Bandpass Filter" IEEE Transactions on Microwave Theory and Techniques, Vol. 54, No. 12, Part 1, Pp 4169-4177, Dec. 2006.
    [46] R. Wang; C. K. Koh; B. Jung; W.J. Chappell, "Clock Generation and Distribution Using Traveling-Wave Oscillators with Reflection and Regeneration" Conference 2006, IEEE Custom Integrated Circuits, pp. 781 - 784, 10-13 Sept. 2006.
    [45] G. Wu, R. G. Cooks, Z. Ouyang,M. Yu, W. Chappell, and W. Plass,"Ion Trajectory Simulation for Electrode Configurations with Arbitrary Geometries", J Am. Soc. Mass Spectrom., 17(9) pp. 1216-1228, Sept. 2006.
    [44] Z.N. Wing,  J. W. Halloran, W. Han She, X. Gong, E. Hoppenjans, and W.J. Chappell, "Fabrication and Properties of an Artificially Anisotropic TiO2 Dielectric" J. American Ceramic Society, vol. 89, no. 9 pp. 2812-1815, Sept. 2006.
    [43] J.F. Mastarone, W.J. Chappell, “Urban sensor networking using thick slots in manhole covers” Antennas and Propagation Society International Symposium 2006, pp. 779 - 782, July 2006.
    [42] C.-L. Yang, Y. Ouyang, and W. J. Chappell, "Characterization of Angular Channel Response with Lowpass Filters by Using Semi-Directional Antennas," IEEE Ant. and Prop. Int. Symp. (APS), pp. 3093-3096, July 2006.
    [41] X. Gong, T. Smyth, W.J. Chappell, "Cofiring different dielectric constants inside LTCC for metamaterial applications," Antennas and Propagation Society International Symposium 2006, IEEE , pp. 1935-1938, 9-14 July 2006.
    [40] Y. Ouyang, and W. J. Chappell, "Diversity Characterization of Body-Worn Textile Antenna System at 2.4 GHz, " IEEE Ant. and Prop. Int. Symp. (APS), pp. 2117-2120, July 2006.
    [39] H. Sigmarsson, E. Kinzel, W. J. Chappell, and X. Xu, "Selective Laser Sintering of Multilayer, Multimaterial Circuit Components," IEEE MTT-S Int. Microwave Symp., pp. 1788-1791, June, 2006.

    [38]

    		 C.-L. Yang, S. Bagchi, and W. J. Chappell, "Topology Insensitive Location Determination Using Independent Estimates through Semi-Directional Antennas," IEEE Trans. on Ant. and Prop., vol. 54, i. 11, pp. 3458 - 3472, Nov. 2006.
    [37] X. Gong, W.-H. She, E. Hoppenjans, Z. Wing, R. Geyer, J. Halloran, W. Chappell, "Tailored and Anisotropic Dielectric Constants through Porosity in Ceramic Components"  IEEE Trans. Microw. Theory Tech., vol. 53,  no. 11, pp. 3638-3647,  Nov. 2005.
    [36] M. D. Krasniewski, S. Bagchi, C.-L. Yang, W. J. Chappell, "Energy-Efficient, On-Demand Reprogramming of Large Scale Sensor Networks," ACM Trans. on Sensor Networks (TOSN), vol. 56, 1, Article 2, Jan. 2008.
    [35] E. Kinzel, H. Sigmarsson, X. Xu, and W. Chappell, "Selective Laser Sintering of Microwave Components" Proceedings of European Microwave Conference (EuMC), Paris, France, pp. 289-292, Oct. 2005.
    [34] Y. Ouyang, and W. Chappell, “Characterization of the High Frequency Properties of Electrotextiles”, XXVIIIth General Assembly of International Union of Radio Science (URSI), vol. 1, 1106-1108, Oct. 2005 (Invited).
    [33] H. Sigmarsson, E. Kinzel, W. Chappell, and X, Xu, "Thick Film Metallization in Ambient Air Using Selective Laser Sintering" Proceedings of International Symposium on Microelectronics, International Microelectronics and Packaging Society (IMAPS), Philadelphia, USA, pp. 691-699, Sept. 2005.
    [32] Y. Ouyang, E. Karayianni, and W. J. Chappell, “Effect of fabric patterns on electrotextile patch antennas”, IEEE Antennas and Propagation Society International Symposium Digest, vol. 2B, pp.246 – 249, July 2005.
    [31] Y. Huang, X. Gong, S. Hajela, W.J. Chappell, "Layer-by-layer stereolithography of three-dimensional antennas," Antennas and Propagation Society International Symposium, 2005 IEEE , vol.1A, pp. 276-279 Vol. 1A, 3-8 July 2005.
    [30] H. Sigmarsson, E. Kinzel, W. Chappell, and X, Xu, "Selective Laser Sintering of Patch Antennas on FR4" Proceedings of IEEE International Symposium on Antennas and Propagation, Washington DC, USA, July 2005, pp. 280-283
    [29] C.-L. Yang, J. F. Mastarone, and W. J. Chappell, "Directional Antennas for Angular Diversity in Wireless Sensor Networks," IEEE AP-S Int. Symp., vol. 4A, pp. 263-266, July 2005.
    [28] W.H. She, Z. N. Wing, J. W. Halloran and W. J. Chappell, “Variable Dielectric Constants by Structured Porosity for Passive Ceramic Components”, Microwave Symposium Digest, 2005 IEEE MTT-S International, pp. 865-868, June 2005.
    [27] W.H. She, E.E.Hoppenjans, W.J. Chappell, "Embedded dielectric resonator filter in layered polymer packaging," Microwave Symposium Digest, 2005 IEEE MTT-S International, pp. 261-264, June 2005.
    [26] Y. Huang; X. Gong; T. Bruemmer, K. Khanna, W.J. Chappell, "Magnetically aligned anisotropic conductive adhesive for high-frequency interconnects," Microwave Symposium Digest, 2005 IEEE MTT-S International, pp. 861-864, June 2005.
    [25] S. Hajela, X. Gong; W.J. Chappell, "Widely tunable high-Q evanescent-mode resonators using flexible polymer substrates," Microwave Symposium Digest, 2005 IEEE MTT-S International, pp. 2139-2142, June 2005.
    [24] Y. Ouyang, W. Chappell, “Measurement of electrotextiles for high frequency applications”, IEEE MTT-S International Microwave Symposium Digest, June 2005, pp. 1679 – 1682.
    [23] C.-L. Yang, S. Bagchi, and W. J. Chappell, "Location Tracking with Directional Antennas in Wireless Sensor Networks," IEEE MTT-S International Microwave Symposium (IMS), Long Beach, California, pp. 131-134, June 11-17, 2005.
    [22] N. Malhotra, M. Krasniewski, C.-L. Yang, S. Bagchi, and W. Chappell, "Location Estimation in Ad-Hoc Networks with Directional Antenna," 25th International Conference on Distributed Computing Systems (ICDCS), Columbus, Ohio, June 6-9, 2005.
    [21] C. Reilly, W.J. Chappell, J. Halloran, L.P.B.Katehi, “High Frequency Electromagnetic Bandgap Structures via Indirect Solid Freeform Fabrication”, J. American Ceramic Society, 87 [8] (2004) p.1446-53.
    [20] X. Gong, A. Margomenos, B. Liu, S. Hajela, L.P.B. Katehi, and W. Chappell "Precision Fabrication Techniques and Analysis on High-Q Evanescent-Mode Resonators," IEEE Trans. Microwave Theory Tech., vol. 52, pp. 2557-2566, Nov. 2004.

    [19]

    		 B. Liu, X. Gong, and W. Chappell "Applications of Layer-by-Layer Polymer Stereolithography for Three-Dimensional High-Frequency Components," IEEE Trans. Microwave Theory Tech, vol. 52, pp. 2567-2575, Nov. 2004.
    [18] A.K. Mills, W.J. Chappell, “On the use of commercial FEM electromagnetic software in an undergraduate curriculum”; IEEE Antennas and Propagation Symposium 2004, vol. 3, pp. 3365 - 3368, June 2004.
    [17] B. Liu, X. Gong, W.J. Chappell, "Layer-by-layer polymer stereolithography fabrication for three-dimensional RF components," Microwave Symposium Digest, 2004 IEEE MTT-S International , vol.2, pp. 481-484 Vol.2, 6-11 June 2004.
    [16] X. Gong, B. Liu, L.P.B. Katehi, W.J. Chappell, "Laser-based polymer stereolithography of vertically integrated narrow bandpass filters operating in K band," Microwave Symposium Digest, 2004 IEEE MTT-S International, vol.2, pp. 425-428 Vol.2, 6-11 June 2004
    [15] X. Gong, B. Liu, L.P.B. Katehi, W.J. Chappell, "Layer-by-layer stereolithography (SL) of complex medium," Antennas and Propagation Society International Symposium, 2004. IEEE , vol.1, pp. 325-328 Vol.1, 20-25 June 2004.

    [14]

    		 W.H. She, X. Gong, W.J. Chappell "Fundamental Constraints on Two-Dimensional EBG Structures," IEEE Antennas and Propagation Society Symposium, vol. 2, pp. 1419-1422, June 2004
    [13] X. Gong, W. J. Chappell, L. P. B. Katehi, “Multifunctional substrates for high-frequency applications”; IEEE Microwave and Wireless Components Letters, vol. 13, no. 10, pp. 428 -430, Oct. 2003.

    [12]

    		 W.J. Chappell, X. Gong "Wide bandgap composite EBG substrates," IEEE Trans. Antennas and Propagation, vol. 51, pp. 2744-2750, Oct. 2003
    [11] X. Gong, L.P.B. Katehi, W.J. Chappell, "Effective medium properties of finely periodic substrates," Antennas and Propagation Society International Symposium, 2003. IEEE , vol.1, pp. 489-492 vol.1, 22-27 June 2003.

    [10]

    		 W.J. Chappell, X.Gong, L.P.B. Katehi "Narrow Ka Bandpass Filters Using Periodically Loaded Substrates," IEEE MTT-S International Microwave Symposium Digest., vol. 3, pp. 1611-1614, June 2003
    [9] X. Gong, W.J. Chappell, L.P.B. Katehi "Embedded Radiating Filters in Metamaterial Substrates," IEEE Antennas and Propagation Society International Symposium, vol. 3, pp. 351-354, June 2003
    [8] W.J. Chappell, C.J. Reilly, J.W. Halloran, and L. P. B. Katehi “Ceramic Synthetic Substrates Using Solid Free Form Fabrication”, IEEE Transactions on Microwave Theory Techniques, vol. 51, no. 3, pp. 752-760, March 2003.
    [7] W. J. Chappell, C. J. Reilly, J. W. Halloran, and L. P. B. Katehi, “High Frequency Applications for Two Dimensional Periodic Substrates”, European Microwave Conference, session on New and Developing Technologies and Materials For Microwave Components, Milan, Italy, vol. 2, pp. 348-351, August 2002.
    [6] W. J. Chappell, L. P.B. Katehi, “Composite Metamaterial Systems for Two-Dimensional Periodic Structures”, submitted to IEEE Antennas and Propagation Symposium, special session on Metamaterials, San Antonio, TX, vol. 3, pp. 834-837, July 2002.
    [5] C. J. Reilly, W. J. Chappell, J. Halloran, K. Sarabandi, J. Volakis, L. Katehi; “New fabrication technology for ceramic metamaterials”, IEEE Antennas and Propagation Symposium 2002, special session on Metamaterials San Antonio, TX, Vol. 2, pp. 376 -379, July 2002.
    [4] W. J. Chappell, M. Little, and L. P.B. Katehi, “High Isolation, Planar Filters Using EBG Substrates”, IEEE Microwave Wireless and Components Letters, vol. 11, no. 6, pp. 246 -248, June 2001.
    [3] W. J. Chappell, Matthew P. Little, Linda P.B. Katehi, “Integration of Planar Antennas and Two Dimensional Defect Resonators”, IEEE Antennas and Propagation Symposium, Salt Lake City, UT, vol. 2, pp. 331-334, July 2000.
    [2] W. J. Chappell, M. P. Little, and L. P.B. Katehi, “High Q Two Dimensional Defect Resonators – Measured and Simulated”, IEEE MTT-S International Microwave Symposium Digest, vol. 3, pp. 1437-1440, Boston, MA, June 2000.
    [1] J. D. Shumpert, W. J. Chappell, and L. P.B. Katehi, “Parallel-Plate Mode Reduction in Conductor-Backed Slots Using Electromagnetic Bandgap Substrates”, IEEE Transactions on Microwave Theory Tech., vol. 47, no. 11, pp. 2099 -2104, Nov. 1999.

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