28.3 A frequency-defined vernier digital-to-time converter for impulse radar systems in 65nm CMOS

Impulse radar is a promising method for achieving high-range resolution and multi-path immunity for ranging and localization applications [1], [2]. Impulse radar sends signals with short duration and spreads signal power over a large bandwidth. Favorable features of impulse radar are minor interference with other wireless systems as well as high immunity to nearby radio signals. Thus, impulse radars are compatible with the harsh environments where intensive radio services are operating. In conjunction with the advantages of high integration and low cost in mass production from CMOS technology, more ubiquitous utilizations are feasible for CMOS impulse radars.