Authors: Yuan Ding,Vincent F. Fusco
Source: FERMAT, Volume 01, Communication 10, Jan_Feb, 2014
Abstract: A means for scrambling the digital modulation content in the sidelobe of a wireless communication from a steerable antenna array is described. By exploiting the beam orthogonality characteristics associated with a Butler matrix, the concept of sidelobe manipulation is proposed. The method uses a Butler matrix parallel excited by an RF information data stream and artificial interference. The proposed system is implemented using a four by four Butler matrix MMIC and its operational characteristics are validated by bit error rate (BER) simulations for a 60 GHz QPSK transmission. The proposed architecture presented should find application in enhanced communication systems where security is of great concern.
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Sidelobe Manipulation using Butler Matrix for 60 GHz Physical Layer Secure Wireless Communication