- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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An IR-UWB Angle-of-Arrival Sensor IC Using Auto-Toggled Time-to-Digital Converter
摘要： This letter introduces an impulse radio-ultrawideband (IR-UWB) angle-of-arrival (AoA) sensor integrated circuit (IC) using an auto-toggled time-to-digital converter (TDC). The detectable range of the proposed AoA sensor can be extended by a factor of 2 by utilizing an auto-toggle operation that toggles the TDC’s input signal according to the target’s position. The analog front end (AFE) of the receivers is designed with a 3–5 GHz band and the system comprises two AFEs and one digital back end (DBE). The proposed IR-UWB AoA sensor IC was fabricated using a 65-nm CMOS process. The measurable angular range was ± 40?, and an angle error of ± 1.5? was measured.
关键词： impulse radio-ultrawideband (IR-UWB),time-to-digital converter (TDC) with auto-toggle,Angle-of-arrival (AoA)
更新于2025-09-11 14:15:04
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[IEEE 2018 15th European Radar Conference (EuRAD) - Madrid, Spain (2018.9.26-2018.9.28)] 2018 15th European Radar Conference (EuRAD) - Detection of People Trapped under the Ruins Using Dual-frequency IR-UWB Radar
摘要： Detection of people hidden by obstacles using impulse radio ultra wideband radar has become a keen research nowadays. According to theories of the UWB radar, the lower center frequency is, the better penetrability radar has. And the larger bandwidth is, the higher radar range resolution becomes. In order to detect survivors trapped under the ruins of collapsed buildings, researches commonly focus on the radar with center frequency below 500 MHz. However, the radar with low center frequency always has small bandwidth, so it is relatively insensitive to the weak signal of the survivor. And this may lead to miss detection in search and rescue missions. Therefore, a novel dual-frequency IR-UWB radar system is developed in this paper. It can works alternately at each waveform with two center frequencies, which are 270 MHz and 400MHz. And the equivalent bandwidth of the system is relatively extended to enhance the sensitivity to weak vital signals. Moreover, cross-correlation technique is applied to the processed data of the two channels to improve the detected signal to noise ratio (SNR). The experimental results show that this system can both meet the need of low center frequency and large bandwidth in life detection and the detected SNR of the system is much higher than that of the single-frequency IR-UWB radar. So this system can work more reliably and effectively in the detection of people trapped under the ruins.
关键词： search and rescue (SAR),impulse radio ultra wideband (IR-UWB),cross-correlation,dual-frequency,life detection
更新于2025-09-09 09:28:46
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[IEEE 2018 15th European Radar Conference (EuRAD) - Madrid, Spain (2018.9.26-2018.9.28)] 2018 15th European Radar Conference (EuRAD) - E-band Impulse Radio Transceiver with 2-bit Pulse-Position Modulation
摘要： This paper presents a novel radio transceiver based on a 2-bit pulse-position modulation (PPM) system for E-band wireless communication systems. We propose a time-based modulation architecture for a wireless transceiver. This is a promising architecture for deep-submicron and nanoscale CMOS technology. The performance of the wireless transceiver can be enhanced as the speed of the CMOS circuit increases. The transmitter is composed of four circuit blocks: a pulse-position modulator, impulse generator, millimeter-wave bandpass filter, and power amplifier. The receiver is comprised of a conventional quadrature demodulator. The transmitter and receiver chipset is fabricated in 55-nm standard CMOS technology. In transceiver loop-back tests, a data rate of 7.0 Gb/s with repetition data and 4.6 Gb/s with pseudo-random bit sequence (PRBS) data are demonstrated.
关键词： point-to-point communications,wireless transceiver,E-band,pulse-position modulation,impulse radio
更新于2025-09-04 15:30:14
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[IEEE 2018 IEEE 14th International Conference on Automation Science and Engineering (CASE) - Munich, Germany (2018.8.20-2018.8.24)] 2018 IEEE 14th International Conference on Automation Science and Engineering (CASE) - CKF-based Fast Error Compensation Filter Design for IR-UWB Indoor Positioning System for Building Automation
摘要： Recently, impulse radio-ultra wideband is widely used for highly accurate location estimation of robots and objects in indoor space for building automation. For their accurate positioning, calibration must be performed after the positioning system is installed, and a compensation technique of the multipath signals should be performed in real-time. In this paper, a real-time calibration and error compensation method is proposed. A filter that estimates channel common error and channel-specific error sequentially is designed based on cubature Kalman filter and the fast and accurate estimation performance of this filter is verified experimentally.
关键词： indoor positioning,impulse radio-ultra wideband,calibration,cubature Kalman filter,error compensation
更新于2025-09-04 15:30:14