Generation of unconventional OAM waves by a circular array. Issue 21 (23rd September 2019)

• Record Type: Journal Article
• Authors: Liu, Kang; Cheng, Yongqiang; Wang, Hongqiang; Qin, Yuliang; Wang, Zhan
• Is Part Of: Journal of engineering. Volume 2019:Issue 21(2019)
• Page Start: 7962
• Page End: 7965
• Publication Date: 2019-09-23
• Subjects: multiplexing -- angular momentum -- radar detection -- object detection -- radar imaging; orbital angular momentum waves -- radar target detection -- phase singularity -- doughnut‐shaped intensity distribution -- OAM multiplexing systems -- transverse plane -- uniform circular array -- full‐wave simulation -- OAM beam generation -- unconventional OAM wave generation modes -- radar imaging; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2019.0654
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : In recent years, orbital angular momentum (OAM) waves have been applied to improve the performance of radar target detection and imaging. However, the phase singularity of conventional OAM beams and the doughnut‐shaped intensity distribution will degrade the performance of target detection. To solve the divergence problem in OAM multiplexing systems, the generation method of OAM beams propagating along a transverse plane is proposed using a uniform circular array, which is validated by full‐wave simulation. Compared with conventional OAM beams, simulation results indicate that the generated beams with different OAM modes all propagate along the transverse plane while maintaining the regular wavefront shapes. This work can provide the development of new radar paradigm with technical support.