Adaptive CMOS analog circuits for 4G mobile terminals-Review and state-of-the-art survey
Microelectronics Journal
Analog Integrated Circuits and Signal Processing
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This article describes a fully integrated 90 nm CMOS software-defined radio receiver operating in the 800 MHz to 5 GHz band. Unlike the classical SDR paradigm, which digitizes the whole spectrum uniformly, this receiver acts as a signal conditioner for the analog-to-digital converters, emphasizing only the wanted channel. Thus, the ADCs operate with modest resolution and sample rate, consuming low power. This approach makes portable SDR a reality