A Blocker-Tolerant Receiver With VCO-Based Non-Uniform Multi-Level Time-Approximation Filter

Abstract

A blocker-tolerant millimeter-wave (mm-Wave) receiver is presented using a multi-level time-approximation filter (mTAF), a voltage-controlled oscillator (VCO)-based integrator with embedded digitization, and non-uniform (NU) sampling to enhance filtering flexibility and e fficiency. The mTAF approxi- mates FIR filter responses using a digitally generated multi-level weighting pattern that controls gated integration over time. Compared with state-of-the-art reconfigurable blocker-tolerant receivers, the