Partitioned pseudo-retrodirective arrays for capacity expansion of backscatter communication channels

This paper presents the effects of partitioning scattering arrays with specific attention to retrodirective structures. By segmenting large arrays, total data transmission can be drastically increased while severely reducing design concerns associated with retrodirective feed networks. The behavior of partitioned retrodirective arrays is observed and quantified from link budget, information theory, and time-varying beam-forming perspectives. A retrodirective device is measured and it's characteristics used to simulate time-varying beam-forming behavior when used as a module in a partitioned pseudo-retrodirective array. The significant increase in range and channel capacity due to these structures will enable RFID systems that operate in microwave and millimeter wave regimes.