TY - GEN
T1 - The vortical radio waves realized by helical antennas
AU - Wei, Du Juan
AU - Li, Jian Ying
AU - Yang, Jang Jun
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/18
Y1 - 2017/10/18
N2 - The helical antennas (HAs) work as three different types with respect to various revolution length, which are the normal-direction helical antenna (NHA), the axial-direction helical antenna (AHA) and the conical-direction antenna (CHA). In this letter, the vortical radio waves carrying the multiple orbital angular momentum (OAM) modes generated by the NHAs and CHAs is proposed. The results of the NHAs and CHAs radiating the vortical radio waves carrying the OAM in modes of l=±1, ±2, ±3, ±4 are presented. Through the simulated results, for the OAM mode l, there is the spiral phase front with l∗2p phase variation along the concentric circle in the phase pattern. For the CHA with modes larger than 1, the null amplitude of electric field in the axial direction exist, and the null amplitude area expands more with the mode increasing.
AB - The helical antennas (HAs) work as three different types with respect to various revolution length, which are the normal-direction helical antenna (NHA), the axial-direction helical antenna (AHA) and the conical-direction antenna (CHA). In this letter, the vortical radio waves carrying the multiple orbital angular momentum (OAM) modes generated by the NHAs and CHAs is proposed. The results of the NHAs and CHAs radiating the vortical radio waves carrying the OAM in modes of l=±1, ±2, ±3, ±4 are presented. Through the simulated results, for the OAM mode l, there is the spiral phase front with l∗2p phase variation along the concentric circle in the phase pattern. For the CHA with modes larger than 1, the null amplitude of electric field in the axial direction exist, and the null amplitude area expands more with the mode increasing.
KW - Axial-direction helical antenna (CHA)
KW - Conical-direction helical antenna (CHA)
KW - Orbital angular momentum (OAM)
KW - Vortical radio wave
UR - http://www.scopus.com/inward/record.url?scp=85042263776&partnerID=8YFLogxK
U2 - 10.1109/APUSNCURSINRSM.2017.8072130
DO - 10.1109/APUSNCURSINRSM.2017.8072130
M3 - 会议稿件
AN - SCOPUS:85042263776
T3 - 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings
SP - 175
EP - 176
BT - 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017
Y2 - 9 July 2017 through 14 July 2017
ER -