title: Multiplexed Millimeter Wave Communication with Dual Orbital Angular Momentum (OAM) Mode Antennas.
abstract: Communications using the orbital angular momentum (OAM) of radio waves have attracted much attention in recent years. In this paper, a novel millimeter-wave dual OAM mode antenna is cleverly designed, using which a 60 GHz wireless communication link with two separate OAM channels is experimentally demonstrated. The main body of the dual OAM antenna is a traveling-wave ring resonator using two feeding ports fed by a 90° hybrid coupler. A parabolic reflector is used to focus the beams. All the antenna components are fabricated by 3D printing technique and the electro-less copper plating surface treatment process. The performances of the antenna, such as S-parameters, near-fields, directivity, and isolation between the two OAM modes are measured. Experimental results show that this antenna can radiate two coaxially propagating OAM modes beams simultaneously. The multiplexing and de-multiplexing are easily realized in the antennas themselves. The two OAM mode channels have good isolation of more than 20 dB, thus ensuring the reliable transmission links at the same time.
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Xiaonan
authors.initials: X
authors.lastname: Hui
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Shilie
authors.initials: S
authors.lastname: Zheng
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Yiling
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Yiping
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Jin
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Chi
authors.affiliation: Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Xianmin
authors.initials: X
authors.lastname: Zhang