Jiangtao Huangfu

TL;DR: The simple pattern of the inclusion, the wide left-handed frequency band exhibited, and the low losses measured indicate the superiority of this inclusion in the realization of left- handed metamaterials.

TL;DR: In this article, a one-dimensional metamaterial was realized using three connected Ω rings printed back-to-back and reversed on two sides of a dielectric substrate, yielding concordant results of the presence of a left-handed frequency band.

TL;DR: By using a phased electromagnetic dipole array to model a moving charged particle, the authors experimentally verified a reversed Cherenkov radiation in the left-handed media in the frequency range from 8.1 to 9.5 GHz.

TL;DR: A Doppler radar system for noncontact vital sign detection (VSD) using instruments that are generally equipped in radio-frequency and communication laboratories and designed with a heterodyne digital quadratures demodulation architecture that helps mitigate quadrature channel imbalance and eliminate the complicated dc offset calibration required for arctangent demodulating.

TL;DR: Experimental validations show that the proposed algorithm can fully recover the vibration patterns with the measured noncalibrated amplitude agreeing well with the known precalibrated data, showing a wide range of potential applications of this algorithm.