Experimental demonstration of highly localized pulses (X waves) at microwave frequencies

Article

关键词: FOCUSED MICROSTRIP ARRAY;    DIFFRACTION-FREE BEAMS;    BESSEL BEAMS;    MAXWELL EQUATIONS;    GENERATION;    FIELD;    PROPAGATION;    AXICON;    MODES;   

DOI  :  10.1103/PhysRevB.97.085136

来源: SCIE

【 摘 要 】

A device that radiates transverse magnetic Bessel beams in the radiative near field is reported. The cone angle of the emitted radiation remains constant over a wide frequency range (18-30 GHz), allowing highly localized pulses (X waves) to be generated under a broadband excitation. The design process, based on ray optics, is discussed. Both frequency and time domain experimental results for a prototype are presented. The measured fields show close agreement with simulation results, and demonstrate the radiator's ability to emit X waves within its nondiffracting range.

【 授权许可】

Free