A 150 kHz-80 MHz BW DT analog baseband for SDR RX using a 5th-order IIR LPF, active FIR and 10b 300 MS/s ADC in 28nm CMOS Vrije Universiteit Brussel
A Discrete-Time (DT) analog baseband for Software-Defined-Radio (SDR) receivers is presented. A zero-IF baseband signal at the input of a programmable gm is converted to current, which is integrated on a 5th order DT IIR filter with a bandwidth ranging from 150 kHz to 80 MHz. The IIR is followed by a DT amplifier which integrates freely selectable samples to implement active FIR filtering while simultaneously offering variable-gain ...