Hiroshi Haruki

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A multi-antenna system without any switching cit-ciiits. which is suitable for the CDMA handy phone is proposed. The proposed antenna system is composed of the two quarter wavelength monopole antennas (QMPA) located at the top and bottom of the handy phone. and the two QMPAs are simultaneously fed tlirougli a power divider in phase and same amplitude. The(More)
This paper proposes a new mutable nonlinear transformation algorithm for AES S-box to enhance the complexity of the S-Box's structure called M_S-box that effectively provides an optimal degree of resistance against differential cryptanalysis and especially the linear cryptanalysis. The structure of the AES S-box has been expanded and modified to be(More)
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