A reconfigurable analog baseband transformer for multistandard applications in 14nm FinFET CMOS

This paper proposes the reconfigurable RX analog baseband transformer that supports multi-standard applications. The proposed ABB can transform its structure between a delta-sigma modulated ADC for narrow band and a baseband LPF for wide band with a simple switch configuration without extra cost. Thus, the ABB obtains efficiency in both size and power aspects. It occupies only 0.11mm 2 of active area by avoiding large capacitor for narrow band filtering and consumes 1.33mW and 12.1mW in GSM and LTE40M modes, respectively.