High-Sensitivity, Low-Power IR-UWB Radar Transceiver With Self-Interference Resistance for Child Presence Detection and Precision Positioning

作     者：Seok, Hyun-Gi Kim, Wan Kim, Sinyoung Lee, Jae-Keun Lee, Geunhaeng Kim, Chanho Kim, Wonkang Cho, Jongpil Bae, Seungyong Cho, Youngsea Jung, Wonjun Kim, Junhyeong Kang, Sumin Na, Hyeokju Kang, Byoungjoong Han, Honggul Kang, Hoon Ahn, Chiyoung Jung, Sukjin Sung, Hyukjun Oh, Seunghyun Lee, Jongwoo Kim, Joonsuk 

作者机构：Samsung Elect Syst LSI Business Hwaseong Si 18448 Gyeonggi Do South Korea Incheon Natl Univ Dept Informat & Telecommun Engn Incheon 22012 South Korea 

出 版 物：《IEEE JOURNAL OF SOLID-STATE CIRCUITS》 (IEEE J Solid State Circuits)

年 卷 期：2025年第60卷第4期

页      面：1150-1161页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

主　　题：Transceivers Ultra wideband radar Radio frequency Radar Gain Program processors Radar antennas Sensitivity Power demand Distance measurement Angle-of-arrival (AoA) child presence detection (CPD) IEEE 802.15.4/4z impulse radio ultrawideband (IR-UWB) low-noise amplifier (LNA) noise figure (NF) notch filter radar receiver (RX) self-interference sensitivity spectrum emission mask (SEM) time-of-arrival (ToA) transceiver transmitter (TX) UWB 

摘      要：This article presents a radar-enabled impulse radio ultrawideband (IR-UWB) system by adopting a self-interference-resistant RF transceiver. It demonstrates that child presence detection (CPD) using IR-UWB radar is feasible through the implementation of a radar system that includes physical (PHY), media access control (MAC), and application (APP) processors. The RF transceiver shows high receiver (RX) sensitivity and high transmitter (TX) peak power with low power. In addition, a radar-dedicated TX is used to improve the TX signal isolation to the RX. To achieve the high RX chain gain and low noise figure (NF) of RX, an RX front end (RX-FE) [low-noise amplifier (LNA) and voltage-to-current (V2I)] with a 50% duty cycle local oscillator (LO) is implemented. Furthermore, a notch pulse shaping filter (PSF) technique is proposed to meet spectrum emission mask (SEM) specifications with low power consumption. An LNA with wide gain ranges is also proposed to improve the sensitivity and support various applications related to radar and positioning applications. The UWB transceiver achieves -96.5-dBm sensitivity at BPRF 6.81 Mb/s and 14-dBm TX peak power and supports radar operation with UWB channels 5 and 9.