For original paper see K.M.K.H. Leong et al., ibid., vol.11, pp.62-64 (2001). For comment see T.J. Ellis, ibid., vol.13, no.6, pp.250-51 (2003). The authors appreciate the investigation and comments by T. J. Ellis regarding the quasi-Yagi antenna. In fact, one of the co-authors (Y. Qian) has been challenged multiple times in the past on the novelty of the quasi-Yagi antenna and feels obliged to take this opportunity to make some clarifications and re-emphasize the uniqueness of this particular antenna structure.
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Leong et al. (2003) studied this question.
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