19.3 Reconfigurable SDR receiver with enhanced front-end frequency selectivity suitable for intra-band and inter-band carrier aggregation

Abstract

The demand for increased wireless data throughput in future wireless communication and the lack of available wide contiguous frequency bands inspire the concept of aggregating multiple frequency bands in a Software-Defined Radio (SDR). A major challenge for such an SDR receiver is maintaining a high dynamic range in the presence of various desired and undesired signals spread over a wide frequency range. This paper introduces a receiver architecture that allows the RF front-end to be configured with various filtering profiles depending on signal scenarios while supporting intra-band multichannel carrier aggregation (contiguous and non-contiguous) with only one frequency synthesizer.