Spectral signature secured retrodirective array

Vincent Fusco, Yuan Ding, Neil Buchanan
2017 IET Microwaves, Antennas & Propagation  
A novel retrodirective array (RDA) architecture is proposed which utilises a special case spectral signature embedded within the data payload as pilot signals. With the help of a pair of phase-locked-loop (PLL) based phase conjugators (PCs) the RDA's response to other unwanted and/or unfriendly interrogating signals can be disabled, leading to enhanced secrecy performance directly in the wireless physical layer. The effectiveness of the proposed RDA system is experimentally demonstrated.
doi:10.1049/iet-map.2016.0527 fatcat:icr7w22u5ncnzkdgdyzyj55dva