An Integrated Primary Impulse Radio Ultra-Wideband Radar for Short-Range Real-Time Localization

This paper presents a primary impulse-radio ultra-wideband (IR-UWB) radar system for real-time short-range localization, e.g., for smart traffic and automotive applications. The radar system consisting of an integrated radar transceiver (TRx) using 45-nm SOI CMOS technology and an FPGA-based signal processing. The efficient transmitter (Tx), which complies with the regulations for both indoor and outdoor applications, modulates and emits a seventh derivative Gaussian pulse. In the receiver (Rx), echo signals will be amplified and sampled in real-time. The echo pulses are recovered by signal processing hardware on the FPGA, which is also used to perform simple classification tasks like user warning. The radar system is compact, portable, and power efficient. The Tx has a high-energy efficiency of $\mathrm {11~ \text {p} \text {J} /pulse}$ . The proposed radar system achieves very high signal-to-noise ratio (SNR) and range precision. It has a maximum detection range of $\mathrm {15~m }$ and a range resolution down to $\mathrm {3~ \text {cm}}$ . Moreover, a target of interest can be warned with a latency as fast as $\mathrm {16~\mu s }$ by using 1-bit real-time sampling.