Annular dielectric resonant chamber antenna for radially propagating OAM wave beam

Abstract

The invention discloses an annular dielectric resonant chamber antenna for radially propagating an OAM wave beam. The integral structure of the annular dielectric resonant chamber antenna is an annular dielectric resonant chamber which has an annular seam in the circumferential direction of a sidewall. The annular dielectric resonant chamber is composed of annular metal chamber and an intermediate filling medium. The annular dielectric resonant chamber can be seen as a coaxial line resonant chamber. The external radius of the dielectric in the annular dielectric resonant chamber is the inner radius of an external conductor of a coaxial line, and the inner radius of the dielectric is the radius of the inner conductor of the coaxial line resonant chamber. The height of the annular dielectric resonant chamber is the height of the coaxial line resonant chamber. The seam is located at a right middle position, which corresponds with the dielectric sidewall, of the metal sidewall. The inner filling dielectric is composed of isotropic uniform dielectrics. According to the annular dielectric resonant chamber, through combining the coaxial line resonant chamber and an annular travelling wave antenna structure, the antenna structure in which the inner filling medium generates an RF rail angular momentum wave beam that is radially transmitted is designed. The annular dielectric resonant chamber antenna can reduce antenna radius and furthermore improves channel capacity and transmission efficiency of a wireless communication system.

Description

technical field [0001] The invention belongs to the field of OAM wireless communication, and relates to a ring-shaped dielectric resonant cavity antenna based on ring-shaped traveling-wave antenna theory, which radially propagates and carries orbital angular momentum (OAM) radio frequency beams. Background technique [0002] With the rapid development of the Internet and mobile communications, wireless communications have been integrated into all aspects of life. Whether it is short-range NFC, Bluetooth, WIFI technology, or long-distance 4G communication technology, 5G communication technology, wireless communication networks have been quietly set up around people. However, for the large-capacity and high-speed requirements of mobile communication systems, the problem of limited wireless spectrum resources has become increasingly prominent. Conventional electromagnetic wave modulation methods based on frequency, phase, and amplitude have been fully developed and utilized. I...

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Problems solved by technology

As the propagation distance increases, the central singularity area gradually becomes larger, which is not conducive to the receiving antenna receiving signals at long distances

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