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“A Printed Triangular Monopole with Wideband Circular Polarization”,
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John, M., Ammann, M. J., and Farrell, R.,
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“Printed UWB Antenna with Coupled Slotted Element for Notch-frequency Function”,
International Journal of Antennas & Propagation, vol. 2008, p. Article ID 713921, 8 pages, 2008.
Liu, L. B., Zhao, H. P., See, T. S. P., Chen, Z. N., and Ammann, M. J.,
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Gaetano, D., Ammann, M. J., McEvoy, P., John, M., Keating, L., and Horgan, F.,
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Microwave and Optical Technology Letters, vol. 54, no. 8, pp. 1982-1986, 2012.